java experiments and programs

EXP.NO:-01 PRELAB EXERCISE:-
BOOKDEMO:-
import java.lang.*;
import java.util.*;
class Book
{
String BKname;
int BKid;
String BKauthor;
Book(String name,int id,String author)
{
BKname = name;
BKid =id;
BKauthor = author;
}
void BKupdatedetails(String name,int id,String author)
{
BKname = name;
BKid =id;
BKauthor = author;
}
void BKdisplay()
{
System.out.println("BOOK NAME :"+BKname);
System.out.println("BOOK ID :"+BKid);
System.out.println("BOOK AUTHOR :"+BKauthor);
}
}
class BookDemo
{
public static void main(String arg[])
{
Book ob=new Book("the yogi",111,"baba");
ob.BKdisplay();
ob.BKupdatedetails("titanic",222,"cameroon james");
System.out.println("the updated details");
ob.BKdisplay();
}
}
E:java programing>javac BookDemo.java

E:java programing>java BookDemo
BOOK NAME :the yogi
BOOK ID :111
BOOK AUTHOR :baba
Updated details are :
BOOK NAME :titanic
BOOK ID :222
BOOK AUTHOR :cameroon james

EXP.NO:-01 LAB EXERCISE:-
import java.lang.*;
import java.util.*;
class Point
{
double x,y;
Point()
{
x=y=0;
}
Point(double a,double b)
{
x=a;y=b;
}
Point(Point l)
{
x=l.x;
y=l.y;
}
double Finddistance(double a,double b)
{
return (Math.sqrt((x-a)*(x-a)+(y-b)*(y-b)));
}
double Finddistance(Point l)
{
return (Math.sqrt((x-l.x)*(x-l.x)+(y-l.y)*(y-l.y)));
}
void display()
{
System.out.println("("+x+ ","+y+ ")");
}
public static void main(String args[])
{
Point p1=new Point(3.25,7.89);
Point p3=new Point(p2);
p1.display();
p2.display();

p3.display();
double c=p1.Finddistance(7.9,16.25);
System.out.println("distance between given points and p1 is:"+c);
c=p1.Finddistance(p3);
System.out.println("distance between p1 and p3 is:"+c);
}
}
E:java programing>javac Point.java
E:java programing>java Point
(3.25,7.89)
(5.37,18.12)
(5.37,18.12)
distance between given points and p1 is:9.566195691078036
distance between p1 and p3 is:10.447358517826409

SHAPE2D:-
import java.lang.*;
import java.util.*;
abstract class Shape2d
{
double x,y;
Shape2d(double a,double b)
{
x=a;y=b;
}
abstract double area();
abstract void display();
}
class Rectangle extends Shape2d
{
Rectangle(double a,double b)
{
super(a,b);
}
double area()
{
return(x*y);
}
void display()
{
System.out.println("length="+x+"breadth="+y+"Area of rectangle="+area());
}
}
class Triangle extends Shape2d
{
Triangle(double a,double b)
{
super(a,b);
}
double area()
{
return(0.5*x*y);
}
void display()

{
System.out.println("length="+x+"breadth="+y+"Area of triangle="+area());
}
}
class Shape2dDemo
{
{
Shape2d s=new Rectangle(1,2);
s.display();
s=new Triangle(1,2);
s.display();
}
}
E:java programing>javac Shape2dDemo.java
E:java programing>java Shape2dDemo
length=1.0breadth=2.0Area of rectangle=2.0
length=1.0breadth=2.0Area of triangle=1.0

import java.lang.*;
import java.util.*;
class Account
{
protected double balance;
protected int accnumber;
Account(int acn,double bal)
{
balance= bal;
accnumber=acn;
}
}
class SBAccount extends Account
{
SBAccount(int acno,double init_bal)
{
super(acno,init_bal);
}
void deposit(double amount)
{
if(amount>0)
{
balance+=amount;
System.out.println("current balance="+balance+"amount deposited="+amount);
}
}
void withdraw(double amount)
{
if((balance-amount)>1000)
{
balance-=amount;
System.out.println("current balance="+balance+"amount withdrawed="+amount);
}
else
System.out.println("insufficient balance found "+"current balance="+balance+"amount
withdraw request="+amount);
}

void calc_interest()
{
balance+=(0.04*balance);
System.out.println("current balance with one year interest="+balance);
}
}
class Customer
{
int custid;String name,address;
SBAccount m;
Customer(int id,String cname,String caddress,int accno,double initialbalance)
{
custid=id;
name=cname;
address=caddress;
m=new SBAccount(accno,initialbalance);
System.out.println("custid="+id+"n name="+cname+"n address="+caddress + "n
accountno=" +accno +"n balance="+initialbalance);
}
void transaction(int a)
{
Scanner s= new Scanner(System.in);
switch(a)
{
case 1:
System.out.println("enter the amount=");
a=s.nextInt();
m.deposit(a);
break;
case 2:
a=s.nextInt();
m.withdraw(a);
break;
case 3:
m.calc_interest();
break;
}
}

}
class BankDemo
{
{
int i=0;
Customer c=new Customer(1,"harry","12,herbert town,mars",221003116,50000.00);
while(i!=1)
{
System.out.println("enter 1 for deposit ,n enter 2 for withdraw,n enter 3 for calculating
interest ,n enter 4 for exit :");
int b=s.nextInt();
if(b==4)
{
i=1;
System.out.println("visit again");
}
else
c.transaction(b);
}
}
}
E:java programing>javac BankDemo.java
E:java programing>java BankDemo
custid=1
name=harry
address=12,herbert town,mars
accountno=221003116
balance=50000.0
enter 1 for deposit ,
enter 2 for withdraw,
enter 3 for calculating interest ,
enter 4 for exit :
1
enter the amount=
500

current balance=50500.0amount deposited=500.0
enter 4 for exit :
2
enter the amount=
300
current balance=50200.0amount withdrawed=300.0
enter 4 for exit :
3
current balance with one year interest=52208.0
enter 4 for exit :
4
visit again

package shape2d;
import java.lang.*;
import java.util.*;
public interface twod
{
double area();
double perimeter();
}
package shape2d;
import java.lang.*;
import java.util.*;
public class Circle implements twod
{
double r;
public Circle(double a)
{
r=a;
}
public double area()
{
return (3.14*r*r);
}
public double perimeter()
{
return (2*3.14*r);
}
}
package shape2d;
import java.lang.*;
import java.util.*;
public class Rectangle implements twod
{
double l,br;
public Rectangle(double a,double b)
{

l=a;br=b;
}
{
return (l*br);
}
{
return (2*(l+br));
}
}
package shape2d;
import java.lang.*;
import java.util.*;
public class Square implements twod
{
double side;
public Square(double x)
{
side=x;
}
{
return (side*side);
}
{
return (4*side);
}
}
import java.lang.*;
import java.util.*;
import shape2d.*;
class ShapeDemo
{
{
Circle f=new Circle(1.0);

System.out.println("Area of Circle="+f.area());
System.out.println("Perimeter of Circle="+f.perimeter());
Square g=new Square(2.0);
System.out.println("Area of Square="+g.area());
System.out.println("Perimeter of Square ="+g.perimeter());
Rectangle c=new Rectangle(1.0,2.0);
System.out.println("Area of Rectangle="+c.area());
System.out.println("Perimeter of Rectangle="+c.perimeter());
}
}
E:java programing>javac shape2dtwod.java
E:java programing>javac shape2dSquare.java
E:java programing>javac shape2dRectangle.java
E:java programing>javac shape2dCircle.java
E:java programing>javac ShapeDemo.java
E:java programing>java ShapeDemo
Area of Circle=3.14
Perimeter of Circle=6.28
Area of Square=4.0
Perimeter of Square =8.0
Area of Rectangle=2.0
Perimeter of Rectangle=6.0

package pkbanking.pkinterface;
import java.lang.*;
import java.util.*;
public interface InterestRate
{
double sbrate=0.04;
}
package pkbanking.pkinterface;
import java.lang.*;
import java.util.*;
public interface Transaction
{
double min_balance=500.0;
void withdraw(double a);
public void deposit(double a);
}
package pkaccount;
import java.lang.*;
import java.util.*;
abstract public class Account
{
protected int accnumber;
protected double balance;
public Account(int a,double b)
{
accnumber=a;
balance=b;
}
}
package pkaccount.sb;
import java.lang.*;
import pkaccount.*;
import pkbanking.pkinterface.*;
import java.util.*;
public class SBAccount extends Account implements Transaction,InterestRate

{
public SBAccount(int an,double ib)
{
super(an,ib);
}
public void deposit(double amount)
{
if(amount>0)
{
balance+=amount;
System.out.println("current balance="+balance+"amount deposited="+amount);
}
}
public void withdraw(double amount)
{
if((balance-amount)>min_balance)
{
balance-=amount;
System.out.println("current balance="+balance+"amount withdrawed="+amount);
}
else
System.out.println("insufficient balance found "+"current balance="+balance+"amount
withdraw request="+amount);
}
public void calc_interest()
{
balance+=(sbrate*balance);
System.out.println("current balance with one year interest="+balance);
}
}
package pkcustomer;
import pkaccount.sb.*;
import java.lang.*;
import java.util.*;
public class Customer
{
int custid;
String name,address;

SBAccount m;
public Customer(int id,String cname,String caddress,int accno,double initialbalance)
{
custid=id;
name=cname;
address=caddress;
m=new SBAccount(accno,initialbalance);
System.out.println("custid="+id+"n name="+cname+"n address="+caddress + "n
accountno=" +accno +"n balance="+initialbalance);
}
public void transaction(int a)
{
switch(a)
{
case 1:
a=s.nextInt();
m.deposit(a);
break;
case 2:
a=s.nextInt();
m.withdraw(a);
break;
case 3:
m.calc_interest();
break;
}
}
}
import java.lang.*;
import pkcustomer.*;
import java.util.*;
class BankDemo
{
{

int i=0;
Customer c=new Customer(1,"harry","12,herbert town,mars",221003116,50000.00);
while(i!=1)
{
System.out.println("enter 1 for deposit ,n enter 2 for withdraw,n enter 3 for calculating
interest ,n enter 4 for exit :");
int b=s.nextInt();
if(b==4)
{
i=1;
System.out.println("visit again");
}
else
c.transaction(b);
}
}
}
E:java programing>javac pkbankingpkinterfaceInterestRate.java
E:java programing>javac pkbankingpkinterfaceTransaction.java
E:java programing>javac pkaccountAccount.java
E:java programing>javac pkaccountsbSBAccount.java
E:java programing>javac pkcustomerCustomer.java
E:java programing>javac BankDemo.java
E:java programing>java BankDemo
custid=1
name=harry
address=12,herbert town,mars
accountno=221003116
balance=50000.0
enter 4 for exit :
1
enter the amount=
500
current balance=50500.0amount deposited=500.0

enter 4 for exit :
2
enter the amount=
300
current balance=50200.0amount withdrawed=300.0
enter 4 for exit :
3
current balance with one year interest=52208.0
enter 4 for exit :
4
visit again

import java.io.*;
import java.lang.*;
import java.util.*;
class Book
{
String BKauthor;
String BKtitle;
double BKprice;
String BKpublisher;
int stockposition;
Book(String BKauthor,String BKtitle,double BKprice,String BKpublisher,int stockposition)
{
this.BKauthor=BKauthor;
this.BKtitle=BKtitle;
this.BKprice=BKprice;
this.BKpublisher=BKpublisher;
this.stockposition=stockposition;
}
int StockPos()
{return stockposition;}
String Author()
{return BKauthor;}
String Title()
{return BKtitle;}
double Price()
{return BKprice;}
void display()
{
System.out.println("nBOOK AUTHOR :"+BKauthor);
System.out.println("BOOK TITLE :"+BKtitle);
System.out.println("BOOK PRICE :"+BKprice+ "rupees");
System.out.println("BOOK PUBLISHER :"+BKpublisher);
System.out.println("BOOK STOCK POSITION :"+stockposition+" no.sn");
}
}
BOOKDEMO
class BookDemo
{

public static void main(String arg[])
{
try {
int i,y=0,z;Book ob[]=new Book[5];char c;String m,n;
DataInputStream obe=new DataInputStream(System.in);Scanner s=new Scanner(System.in);
ob[0]=new Book("Stephen Hawking","The Nature of Space and Time",1500.00,"Princeton
University Press",1);
ob[1]=new Book("Mazidi","8051microcontroller",600.00,"Dorling Kindersley",4);
ob[2]=new Book("Ali Bahrami","OOSD",300.00,"Tata McGraw Hill",10);
ob[3]=new Book("Rabindranath Tagore","Gitanjali",800.00,"Scribner",8);
ob[4]=new Book("Rabindranath Tagore","The Heart of God",1000.00,"Tuttle Publishing",3);
System.out.println("tDetails of the books are :n ");
for(i=0;i<5;i++)
{
ob[i].display();
}
do{
System.out.println("Enter the Author and Title of the Book : ");
m=obe.readLine();
n=obe.readLine();
for(i=0;i<5;i++)
{
if(ob[i].Author().equals(m))
{
if(ob[i].Title().equals(n))
{
y=1;ob[i].display();
System.out.println("ntEnter the number of copies required :");
z=Integer.parseInt(obe.readLine());
if(z<=ob[i].StockPos()&&z>0)
{System.out.println("Total amount for "+z+" copies of "+n+"Book is="+(z*ob[i].Price()));}
else if(z>ob[i].StockPos())
{ System.out.println("Required copies not in stock");}
else if(z<0)
{throw new IllegalArgumentException("Negative Number is Entered"); }
else if(z==0)
{System.out.println("Have you wont need the Book!");}
}
else
y=0;

}
}
if(y==0)System.out.println("Requested Book is not available in the BookShop");
System.out.println("Do You Wish To Buy The Book! [ Press 'n' to come out to the Book Shop
]");
c=s.next().charAt(0);
}while(c!='n');
System.out.println("tVisit Again");
}
catch(Exception e){System.out.println(e.getMessage());}
}
}
C:app>javac BookDemo.java
C:app>java BookDemo
Details of the books are :
BOOK AUTHOR :Stephen Hawking
BOOK TITLE :The Nature of Space and Time
BOOK PRICE :1500.0rupees
BOOK PUBLISHER :Princeton University Press
BOOK STOCK POSITION :1 no.s
BOOK AUTHOR :Mazidi
BOOK TITLE :8051microcontroller
BOOK PUBLISHER :Dorling Kindersley
BOOK AUTHOR :Ali Bahrami
BOOK TITLE :OOSD
BOOK PUBLISHER :Tata McGraw Hill
BOOK AUTHOR :Rabindranath Tagore

BOOK TITLE :Gitanjali
BOOK PUBLISHER :Scribner
BOOK AUTHOR :Rabindranath Tagore
BOOK TITLE :The Heart of God
BOOK PUBLISHER :Tuttle Publishing
Enter the Author and Title of the Book :
Mazidi
8051microcontroller
BOOK AUTHOR :Mazidi
Enter the number of copies required :
3
Total amount for 3 copies of 8051microcontrollerBook is=1800.0
Do You Wish To Buy The Book! [ Press 'n' to come out to the Book Shop ]
k
Mazidi
8051microcontroller
BOOK AUTHOR :Mazidi

5
Required copies not in stock
Do You Wish To Buy The Book! [ Press 'n' to come out to the Book Shop ]
l
Mazidi
8051microcontroller
BOOK AUTHOR :Mazidi
-1
Negative Number is Entered

import java.util.*;
class OperationFailedException extends Exception{
String des;
public OperationFailedException(String d) {
des=d;
}
public OperationFailedException(String d,Throwable e) {
des=d;
System.out.println(" " + ((OperationFailedException)e).des);
}
public String toString(){
return ("Output character = "+des ) ;
}
}
class BadOperandException extends Exception{
int op;
public BadOperandException(int op1) {
op=op1;
}
return ("Output character = "+op) ;
}
}
class BadOperatorException extends Exception{
char opr;
public BadOperatorException(char opr1) {
opr=opr1;
}
return ("Output character = "+opr) ;
}
}
class main1
{

{
char s;String s1;
int i,j,res;
Scanner in=new Scanner(System.in);
System.out.println("Enter two operands and operator as input:");
i=in.nextInt();
j=in.nextInt();
s1=in.next();
s= s1.charAt(0);
try
{
if(i>10000&&i<50000)
{
try
{
if(j>500&&j<5000)
{
try{
if(s=='*')
{res=i*j;System.out.println(res);}
else if(s=='+')
{res=i+j;System.out.println(res);}
else if(s=='-')
{res=i-j;System.out.println(res);}
else if(s=='/')
{res=i/j;System.out.println(res);}
else{
OperationFailedException e=new
OperationFailedException("INVALID OPERATOR");
e.initCause(new BadOperatorException(s));
throw e;
}
}catch(OperationFailedException e)
{
System.out.println("Caught:"+e);
System.out.println("Caught:"+e.getCause());
}
}
else{

OperationFailedException e2=new OperationFailedException("INVALID
SECOND OPERAND");
OPERAND",e2);
e1.initCause(new BadOperandException(j));
throw e1;}
}
catch(OperationFailedException f)
{
System.out.println("Caught:"+f);
System.out.println("Caught:"+f.getCause());
}
}
else{
OperationFailedException e2=new OperationFailedException("INVALID FIRST
OPERAND");
OPERAND",e2);
e1.initCause(new BadOperandException(i));
throw e1;}
}
catch(OperationFailedException f)
{
System.out.println("Caught:"+f);
System.out.println("Caught:"+f.getCause());
}
}
}
C:app>javac main1.java
C:app>java main1
Enter two operands and operator as input:
20000
1000
*
20000000

C:app>java main1
1000
1000
*
INVALID FIRST OPERAND
Caught:Output character = INVALID OPERAND
Caught:Output character = 1000
C:app>java main1
20000
1000
$
Caught:Output character = INVALID OPERATOR
Caught:Output character = $
C:app>java main1
20000
100
/
INVALID SECOND OPERAND
Caught:Output character = INVALID OPERAND
Caught:Output character = 100

import java.lang.*;
import java.util.*;
class factorial extends Thread
{
public void run()
{
try
{
System.out.println("FACTORIAL THREAD PRIORITY = "+this.getPriority());
System.out.println("status of multab while completing task is:"+this.isAlive());
System.out.println("Enter the limit of factorial: ");
int n=s.nextInt();
int j=1;
for(int i=1;i<=n;i++)
{
j=j*i;
}
System.out.println("factorial of "+n+"is"+j);
Thread.sleep(500);
}
catch(InterruptedException e){}
}
}
class sum extends Thread
{
public void run()
{
System.out.println("SUM THREAD PRIORITY = "+this.getPriority());
try
{
System.out.println("Enter the limit of sum of the series: ");
int n=s.nextInt();
int j=0;
{

j=j+i;
}
System.out.println("sum of the 1 to "+n+" numbers is"+j);
Thread.sleep(500);
}
}
}
class multab extends Thread
{
public void run()
{
System.out.println("MULTAB THREAD PRIORITY = "+this.getPriority());
try
{
System.out.println("Enter the limit of multiplication table: ");
int n=s.nextInt();
System.out.println("Enter the number which has to be multiplied: ");
int k=s.nextInt();
{
System.out.println(i+"*"+k+"="+(k*i));
Thread.sleep(500);
}
}
}
}
class ThreadBasic
{
public static void main(String args[]) throws Exception
{
factorial t1=new factorial();
sum t2=new sum();
multab t3=new multab();
t1.setPriority(10);
t2.setPriority(5);

t3.setPriority(2);
t1.start();
t1.join();
System.out.println("status of multab after completing task is:"+t1.isAlive());
t2.start();
t2.join();
t3.start();
}
}
E:java programing>javac ThreadBasic.java
E:java programing>java ThreadBasic
FACTORIAL THREAD PRIORITY = 10
status of multab while completing task is:true
Enter the limit of factorial:
5
factorial of 5 is 120
status of multab after completing task is:false
SUM THREAD PRIORITY = 5
Enter the limit of sum of the series:
3
sum of the 1 to 3 numbers is 6
MULTAB THREAD PRIORITY = 2
Enter the limit of multiplication table:
2
Enter the number which has to be multiplied:
3
1*3=3
2*3=6

import java.util.*;
import java.lang.*;
class Queue
{
int q[],front, rear, size, len,m;
public Queue(int n)
{
size=n;
len = 0;
q = new int[size];
front =rear = -1;
}
public boolean isEmpty()
{
return front == -1;
}
public int size()
{
return len ;
}
public void add(int i)
{
if (rear == -1)
{
front = rear = 0;
q[rear] = i;
}
else if ( rear + 1 < size)
q[++rear] = i;
len++ ;
}
public int remove()
{
if (!isEmpty())
{
len-- ;
m = q[front];
if ( front == rear)

{
front = rear = -1;
}
else
front++;
} return m;
}
synchronized void get() throws InterruptedException
{
while (isEmpty())
{
Thread.sleep(1000);
System.out.println("Queue is empty " + Thread.currentThread().getName() + " is waiting
, size: " + size());
wait();
}
Thread.sleep(1000);
int i = (Integer) remove();
System.out.println("Consumed: " + i);
notify();
}
synchronized void put(int i) throws InterruptedException
{
while (size() == size)
{
Thread.sleep(1000);
System.out.println("Queue is full " + Thread.currentThread().getName() + " is waiting ,
size: " +size());
wait();
}
Thread.sleep(1000);
add(i);
System.out.println("Produced: " + i);
notify();
}
}
class Producer implements Runnable
{
Queue Qobj;

public Producer(Queue obj)
{
this.Qobj = obj;
}
public void run()
{
int counter = 0;
while (true)
{
try{ Qobj.put(counter++); }catch(Exception e){}
}
}
}
class Consumer implements Runnable
{
Queue Qobj;
public Consumer(Queue obj)
{
this.Qobj = obj;
}
public void run()
{
while (true)
{
try{ Qobj.get(); }catch(Exception e){}
}
}
}
public class ProducerConsumer
{
public static void main(String[] args)
{
int QSize = 5;
Queue q=new Queue(QSize);
new Thread(new Producer(q), "Producer").start();
new Thread(new Consumer(q), "Consumer").start();
}
}

E:java programing>javac ProducerConsumer.java
E:java programing>java ProducerConsumer
Produced: 0
Produced: 1
Produced: 2
Produced: 3
Produced: 4
Queue is full Producer is waiting , size: 5
Consumed: 0
Consumed: 1
Consumed: 2
Consumed: 3
Consumed: 4
Queue is empty Consumer is waiting , size: 0
Produced: 5
Produced: 6
Produced: 7
Produced: 8
Produced: 9
Consumed: 5
Consumed: 6
Consumed: 7
Consumed: 8
Consumed: 9
Queue is empty Consumer is waiting , size: 0
Produced: 10
Produced: 11
Produced: 12
Produced: 13
Produced: 14
Consumed: 10
.
.
.

import java.util.*;
import java.lang.*;
import java.io.*;
class ArrayList11
{
public static void main(String a[])
{
ArrayList<String> a1=new ArrayList<String>();
a1.add("hello");
a1.add("photons");
a1.add("sorry");
a1.add("space");
a1.add("comics");
ArrayList11 k=new ArrayList11();
System.out.println("Original String ArrayList=t"+a1);

k.capitalizePlurals(a1);
System.out.println("ArrayList after capitalizePlurals=t"+a1);
k.removePlurals(a1);
System.out.println("ArrayList after removing Plural words=t"+a1);
k.reverse(a1);
System.out.println("ArrayList after reversing the order of the elements in words=t"+a1);
}
public void reverse(ArrayList<String> a1)
{
Collections.reverse(a1);
}
public void capitalizePlurals(ArrayList<String> a1)
{
for(int i=0;i<a1.size();i++)
{
String s=a1.get(i);
if(s.charAt(s.length()-1)=='s')
{
a1.set(i,s.toUpperCase());
}
}
}
public void removePlurals(ArrayList<String> a1)
{
for(int i=0;i<a1.size();i++)
{
String s=a1.get(i);
if((s.charAt(s.length()-1)=='s' )||(s.charAt(s.length()-1)=='S'))
a1.remove(i);
}
}
}
E:java programing>javac ArrayList11.java
E:java programing>java ArrayList11
Original String ArrayList= [hello, photons, sorry, space, comics]
ArrayList after capitalizePlurals= [hello, PHOTONS, sorry, space, COMICS]
ArrayList after removing Plural words= [hello, sorry, space]
ArrayList after reversing the order of the elements in words= [space, sorry, hello]

import java.lang.*;
import java.util.*;
class Point
{
double x,y;
Point()
{
x=y=0;
}
Point(double a,double b)
{
x=a;y=b;
}
Point(Point l)
{

x=l.x;
y=l.y;
}
double Finddistance(double a,double b)
{
return (Math.sqrt((x-a)*(x-a)+(y-b)*(y-b)));
}
double Finddistance(Point l)
{
return (Math.sqrt((x-l.x)*(x-l.x)+(y-l.y)*(y-l.y)));
}
void display()
{
System.out.println("("+x+ ","+y+ ")");
}
{
Point p3=new Point(p2);
Point p4=new Point();
double c=p1.Finddistance(7.9,16.25);
ArrayList<Point>a1=new ArrayList<Point>();
a1.add(p1);
a1.add(p2);
a1.add(p3);
a1.add(p4);
Iterator itr=a1.iterator();
Iterator it=a1.iterator();int i=0;
while(it.hasNext())
{
i++;
Point t1,t2;
t1=(Point)it.next();
t2=(Point)it.next();
System.out.println("p[" +i+"]= ");
t1.display();
System.out.println("p["+(i+1)+"]= ");
t2.display();

double d=t1.Finddistance(t2);
System.out.println("distance between p[" +i+"]"+" and p["+(i+1)+"]"+"points are:"+d);
i++;
}
double d=p2.Finddistance(7.9,16.25);
System.out.println("given points are: ");
p2.display();
System.out.println("distance between given points and p2 is:"+d);
}
}
E:java programing>javac Point.java
E:java programing>java Point
p[1]= (3.25,7.89)
p[2]= (5.37,18.12)
distance between p[1] and p[2]points are:10.447358517826409
p[3]= (5.37,18.12)
p[4]= (0.0,0.0)
distance between p[3] and p[4]points are:18.8989761627449
given points are: (5.37,18.12)
distance between given points and p2 is: 3.146076922136521
import java.util.*;
import java.lang.*;
class TREESET
{
{
TreeSet<String> a1=new TreeSet<String>();
a1.add("hello");
a1.add("photons");
a1.add("sorry");
a1.add("space");
a1.add("comics");
TREESET k=new TREESET();

System.out.println("Original String TREESET=t"+a1);
k.capitalizePlurals(a1);
k.removePlurals(a1);
k.reverse(a1);
}
public void reverse(TreeSet<String> a1)
{
TreeSet <String>treereverse = new TreeSet<String>();
treereverse = (TreeSet)a1.descendingSet();
System.out.println("TREESET after reversing the order of the elements in
words=t"+treereverse);
}
public void capitalizePlurals(TreeSet<String> a1)
{
List<String> list = new ArrayList<String>(a1);
for(int i=0;i<list.size();i++)
{
String s=list.get(i);
if(s.charAt(s.length()-1)=='s')
{
list.set(i,s.toUpperCase());
}
}
a1 = new TreeSet<String>(list);
System.out.println("TREESET after capitalizePlurals = "+a1);
}
public void removePlurals(TreeSet<String> a1)
{
List<String> list = new ArrayList<String>(a1);
for(int i=0;i<list.size();i++)
{
String str=list.get(i);
if(str.charAt(str.length()-1)=='s'|| str.charAt(str.length()-1)=='S')
{
a1.remove(str);
}
}
System.out.println("TREESET after removing plurals = "+a1);
}
}

E:java programing>javac TREESET.java
Note: TREESET.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
E:java programing>java KOPT
Original String TREESET= [comics, hello, photons, sorry, space]
TREESET after capitalizePlurals = [COMICS, PHOTONS, hello, sorry, space]
TREESET after removing plurals = [hello, sorry, space]
TREESET after reversing the order of the elements in words= [space, sorry, hello]
import java.util.*;
import java.lang.*;
class point
{
double x,y;
point(double a,double b)
{
x=a;
y=b;
}
double find_distance(point p)
{
double dis,xd,yd;
xd=x-p.x;

yd=y-p.y;
dis=Math.sqrt(xd*xd+yd*yd);
return(dis);
}
void display()
{
System.out.print("("+x+","+y+") ");
}
}
class ComparePts implements Comparator<point>
{
public int compare(point p1,point p2)
{
point org=new point(0,0);
double d1=p1.find_distance(org);
double d2=p2.find_distance(org);
if(d1<d2)return(-1);
if(d1>d2)return(1);
else return(0);
}
}
class HPoint
{
{
int i;
double x,y,d1;
Scanner s=new Scanner(System.in);
point p[]=new point[10];
HashSet<point> hs=new HashSet<point>();
for(i=0;i<10;i++)
{
System.out.println("Enter x & y for point "+(i+1));
x=s.nextDouble();
y=s.nextDouble();
p[i]=new point(x,y);
hs.add(p[i]);
}

TreeSet<point> ts=new TreeSet<point>(new ComparePts());
Iterator t=hs.iterator();
while(t.hasNext())
{
point pt=(point)t.next();
ts.add(pt);
}
System.out.println("Points in ascending Order:");
Iterator t1=ts.iterator();
while(t1.hasNext())
{
point pt=(point)t1.next();
pt.display();
System.out.println();
}
System.out.println("Distance between every pair:");
Iterator it=hs.iterator();
while(it.hasNext())
{
point t3,t2;
t3=(point)it.next();
t2=(point)it.next();
d1=t3.find_distance(t2);
System.out.print("Distance between the points:");
t3.display();
t2.display();
System.out.println(" = "+d1);
}
}
}
E:java programing>javac HPoint.java
E:java programing>java HPoint
Enter x & y for point 1 1 2

Points in ascending Order:
(1.0,2.0)
(2.0,3.0)
(3.0,4.0)
(4.0,5.0)
(5.0,6.0)
(6.0,7.0)
(7.0,8.0)
(8.0,9.0)
(9.0,10.0)
(10.0,11.0)
Distance between every pair:
Distance between the points:(5.0,6.0) (1.0,2.0) = 5.656854249492381
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class tank extends Applet implements Runnable,ActionListener
{
int y=200,sf=0,rf=0;
Thread t;
Button b1,b2,b3,b4;
public void init()
{
b1=new Button("Start");
b2=new Button("Stop");
b3=new Button("Resume");

b4=new Button("Suspend");
add(b1);
add(b2);
add(b3);
add(b4);
b1.addActionListener(this);
}
public void run()
{
for(y=200;y>120;y--)
{
try{Thread.sleep(1000);}
catch(Exception e){}
repaint();
}
}
public void actionPerformed(ActionEvent a)
{
if(a.getSource()==b1)
{
t=new Thread(this);
sf=1;
t.start();
showStatus("Thread started..");
}
{
if(sf==1)
{
t.stop();
sf=0;
showStatus("Thread stopped..");
}
else
showStatus("Thread not started..");
}

{
if(rf==1)
{
t.resume();
rf=0;
showStatus("Thread resumed..");
}
else
showStatus("Thread not Suspended...");
}
{
if(sf==1)
{
t.suspend();
rf=1;
showStatus("Thread suspended..");
}
else
showStatus("Thread not Started....");
}
}
public void paint(Graphics g)
{
g.drawLine(120,120,120,200);
g.drawLine(200,120,200,200);
g.setColor(Color.blue);
g.fillRect(120,y,80,200-y);
}
}
/*<applet code=tank width=750 height=750></applet>*/
E:javaprograming>javactank.java
Note:glow1.javausesoroverridesadeprecatedAPI.
Note:Recompile with -Xlint:deprecationfordetails.

E:javaprograming>appletviewertank.java
Warning:AppletAPIandAppletViewerare deprecated.
importjava.awt.*;
importjava.awt.event.*;
publicclassAwtFrame extendsFrame implementsFocusListener,ActionListener
{
TextFieldtf1,tf2;
Buttonb1,b2;
Stringmsg="";
publicAwtFrame()

{
setTitle("LoginScreen");setBackground(Color.cyan);
Label lbl = newLabel("SASTRA DEEMEDUNIVERSITY",Label.CENTER);
lbl.setBounds(50,30,300,40);
lbl.setFont(newFont("SansSerif",Font.BOLD,20));
add(lbl);
setFont(newFont("SansSerif",Font.BOLD,10));
Label lb2=newLabel("UserName",Label.LEFT);
Label lb3=newLabel("PassWord",Label.LEFT);
tf1=newTextField("EnterUserName");
tf1.setForeground(Color.gray);
tf2=newTextField("EnterPassWord");
b1= newButton("OK");
b2=newButton("CANCEL");
add(lb2);
add(tf1);
add(lb3);
add(tf2);
add(b1);
add(b2);
tf1.setBounds(120,90,170,20);
tf2.setBounds(120,120,170,20);
lb2.setBounds(25,90,90,20);
lb3.setBounds(25,120,90,20);

tf1.addFocusListener(this);
tf2.addFocusListener(this);
b1.setBounds(100,180,80,20);
b2.setBounds(200,180,80,20);
addWindowListener(newWindowAdapter(){
publicvoidwindowClosing(WindowEvente) {System.exit(0);}});
setLayout(null);
setSize(380,300);
setVisible(true);
}
publicvoidfocusGained(FocusEventfe)
{
TextFieldt=(TextField)fe.getSource();
if(t==tf1)
{ tf1.setText("");}
else
{ tf2.setText("");}
}
publicvoidfocusLost(FocusEventfe)
{
}

publicvoidactionPerformed(ActionEventae)
{
Buttonb =(Button) ae.getSource();
if(b==b1)
{
Strings=tf2.getText();
if(s.length()>=8)
smsg="LoginSuccessful";
else
msg = "InvalidUserName / PassWord";
repaint();
}
else
{
tf1.setText("EnterUserName");
tf2.setText("EnterPassWord");
msg="";
repaint();
}
}
publicvoidpaint(Graphicsg)
{
g.drawString(msg,150,250);

}
publicstaticvoidmain(String[] args)
{
newAwtFrame();
}
}
E:javaprograming>javacAwtFrame.java
E:javaprograming>javaAwtFrame
importjava.awt.*;
importjava.applet.*;
publicclassstudent9extendsFrame implementsFocusListener,ItemListener
{
Stringmsg="",csg="";inti;Choice c[]=newChoice[3];Stringmelt,melt1,melt2;
List lst=new List(4,true);booleanisEmpty;booleanisnumberornot;
Label l[]=newLabel[12];intqq=0,m=1,n=1,pp=1,mm=1,nn=1;

Stringlcap[]={"RegisterNo.","Name","Gender","Degree","Branch","Yearof Study","Date of
Birth","Hobby","Address","ExtraCurricularActivities","E-Mail
Id","B.Tech","M.Tech","CSE","ECE","EEE","YouEntered"};
Checkbox h1,h2,h3;
Label p=newLabel("",Label.CENTER);
Label u=newLabel("",Label.CENTER);
Label l11=newLabel("StudentResponse Form",Label.CENTER);
Label l7=newLabel("",Label.RIGHT);
TextFieldt1=newTextField(20);
TextAreata=newTextArea("",100,100,TextArea.SCROLLBARS_BOTH);
CheckboxGroupcbg=newCheckboxGroup();
Checkbox ck1=newCheckbox("Male",false,cbg);
Checkbox ck2=newCheckbox("Female",false,cbg);
TextAreat5=newTextArea("",180,90,TextArea.SCROLLBARS_VERTICAL_ONLY);
Choice branch=newChoice();
Choice degree=newChoice();
Choice yos=newChoice();
publicstudent9()
{
for(i=0;i<7;i++)
{l[i]=newLabel(lcap[i],Label.LEFT);add(l[i]);}
for(i=7;i<11;i++)
{l[i]=newLabel(lcap[i],Label.CENTER);add(l[i]);i++;}

for(i=8;i<11;i++)
{l[i]=newLabel(lcap[i],Label.LEFT);add(l[i]);i++;}
l[11]=newLabel(lcap[16],Label.CENTER);
add(l[11]);
for(i=0;i<3;i++)
{ c[i]=newChoice();add(c[i]);}
add(p);
add(ta);
h1=newCheckbox("StampCollection");
h2=newCheckbox("ReadingNovels");
h3=newCheckbox("PlayingTennis");
addWindowListener(newmyWindowAdapter());
setBackground(Color.cyan);
setForeground(Color.black);
setLayout(null);
add(l11);
lst.add("Tennis");
lst.add("Cricket");
lst.add("BasketBall");
lst.add("Hockey");
add(t4);
add(h1);add(h2);add(h3);
add(lst);
add(t1);
add(t2);

add(t3);
add(ck1);
add(ck2);
add(branch);
add(degree);
add(yos);
degree.add(lcap[11]);
for(i=13;i<16;i++)
branch.add(lcap[i]);
yos.add("1");add(u);
yos.add("2");
yos.add("3");
yos.add("4");
l11.setFont(newFont("SansSerif",Font.BOLD+Font.ITALIC,15));
p.setFont(new Font("SansSerif",Font.BOLD+Font.ITALIC,15));
u.setFont(new Font("SansSerif",Font.BOLD+Font.ITALIC,15));
for(inti=1;i<=31;i++)
c[0].add(""+i);
c[1].add("January");
c[1].add("February");
c[1].add("March");t1.addFocusListener(this);
c[1].add("April");t2.addFocusListener(this);
c[1].add("May");t3.addFocusListener(this);
c[1].add("June");t4.addFocusListener(this);

c[1].add("July");degree.addItemListener(this);
c[1].add("August");yos.addItemListener(this);
c[1].add("September");
c[1].add("October");
c[1].add("November");
c[1].add("December");
for(i=1990;i<2002;i++)
c[2].add(""+i);
for(i=0;i<6;i++)
l[i].setBounds(25,(60+(i*30)),90,20);
l[6].setBounds(25,240,90,20);
l[7].setBounds(425,65,100,20);
l[8].setBounds(25,290,90,20);
l[9].setBounds(450,105,150,20);
l[10].setBounds(25,400,90,20);
l[11].setBounds(450,210,90,20);ck1.addFocusListener(this);
l11.setBounds(300,40,280,20);ck2.addFocusListener(this);
lst.setBounds(480,140,150,45);lst.addFocusListener(this);
t1.setBounds(120,60,170,20);
t2.setBounds(120,90,170,20);
t3.setBounds(120,400,170,20);
t4.setBounds(120,275,150,90);
ta.setBounds(480,245,335,170);
ck1.setBounds(120,120,50,20);
ck2.setBounds(170,120,60,20);

degree.setBounds(120,150,70,20);degree.addFocusListener(this);
branch.setBounds(120,180,50,20);branch.addFocusListener(this);
yos.setBounds(120,210,30,20);yos.addFocusListener(this);
c[0].setBounds(120,240,35,20);c[0].addFocusListener(this);
h1.setBounds(530,65,105,20);h1.addFocusListener(this);
p.setBounds(300,520,400,20);
u.setBounds(200,590,400,20);
}
publicvoidfocusGained(FocusEventae)
{
if(ae.getSource()==t4)
{
if(cbg.getSelectedCheckbox()==null)
{
msg="Selectthe Gender";
mm=1;ta.setText("");
}else{
mm=0;}
}
p.setText(msg);p.setForeground(Color.red);
}

publicvoidfocusLost(FocusEventae)
{
if(ae.getSource()==t1)
{
if(t1.getText().length()!=9)
{
ta.setText("");
msg="registernumbershouldbe 9characters!";
m=1; }else{
try{
intkk=Integer.parseInt(t1.getText());isnumberornot=false;
}
catch(Exceptione)
{
isnumberornot=true;
}
if(isnumberornot)
{
msg="Charactersshouldbe avoidedforRegNo";
}
else
{
m=0;
}

}
}
else if(ae.getSource()==t2)
{
msg="";isEmpty=t2.getText()==null||t2.getText().trim().length()==0;
if(isEmpty)
{
ta.setText("");
msg="Name shouldnotbe blank";
n=1; }else{n=0;}
}
{
msg="";isEmpty=t4.getText()==null||t4.getText().trim().length()==0;
if(isEmpty)
{
msg="Addressshouldnotbe blank";
nn=1;ta.setText(""); }else{nn=0;}
}
{
msg="";intyo=t3.getText().lastIndexOf("@");
if(!t3.getText().endsWith("@gmail.com"))
{
msg="InvalidE-Mail ID(@gmail.comnotfound)";

pp=1;ta.setText(""); }
else
{
Stringjo=(t3.getText()).substring(0,yo);
isEmpty=jo==null||jo.trim().length()==0||jo.startsWith("");
if(isEmpty)
{
msg="InvalidE-Mail Id(charactersisnotpresentbefore@ORfirstletterisnull)";
pp=1;ta.setText(""); }else{pp=0;}
}
}
else
{
csg="Atlastselectthe YOU ENTERED TextAreaforupdation";
u.setText(csg);u.setForeground(Color.red); }
if(mm==0&&nn==0&&pp==0&&qq==0&&m==0&&n==0)
{
if(cbg.getSelectedCheckbox().getLabel()=="Male")
{
melt="He";melt1="His";melt2="Shri";
}
if(cbg.getSelectedCheckbox().getLabel()=="Female")
{
melt="She";melt1="Her";melt2="Sow";
}

Stringdob,ptr="",pho[],h="";
pho=lst.getSelectedItems();
for(inti=0;i<pho.length;i++)
{ptr+=pho[i];if(i!=pho.length-1){ptr+=",";}}
dob=c[0].getSelectedItem()+"-"+c[1].getSelectedItem()+"-"+c[2].getSelectedItem();
if(h1.getState()){h+=h1.getLabel();if(h.charAt(0)==',')h=h.substring(1,h.length());}
if(h2.getState()){h+=","+h2.getLabel();if(h.charAt(0)==',')h=h.substring(1,h.length());}
ta.append("nn"+melt2+""+t2.getText()+"'sregisternumberis"+t1.getText());
ta.append("n"+melt+"isstudyingin"+yos.getSelectedItem()+" year
"+degree.getSelectedItem()+""+branch.getSelectedItem());
ta.append("n"+melt+"wasbornon"+dob);
ta.append("n"+melt+"isresidingat"+t4.getText());
ta.append("n"+melt1+"E-Mail addressis"+t3.getText());
ta.append("n"+melt+"isinterestedin"+h);
ta.append("n"+melt+"plays"+ptr+"well");
msg="studentdetailsare submitted!";
csg="";
}p.setText(msg);p.setForeground(Color.red);
}
publicvoiditemStateChanged(ItemEvente)
{
if(e.getItemSelectable()==degree)
{
if(((Choice)e.getItemSelectable()).getSelectedItem()=="M.Tech")
{yos.remove("3");

yos.remove("4");}
if(((Choice)e.getItemSelectable()).getSelectedItem()=="B.Tech")
{yos.add("3");
yos.add("4");}
}
}
publicstaticvoidmain(Stringg[])
{student9stu=new student9();
stu.setSize(new Dimension(850,650));
stu.setTitle("ResponseForm");
stu.setVisible(true);
}
}
class myWindowAdapterextendsWindowAdapter
{publicvoidwindowClosing(WindowEventwe)
{
System.exit(0);
}
}
E:javaprograming>javacstudent9.java
E:javaprograming>javastudent9

NOTE : CONSECUTIVEARITHMETIC OPERATIONSCAN ALSOBE
PERFORMED… EG: 1+2*8-1, 1*2*3/2 , ETC , …
importjava.awt.*;
publicclassMyCal4 extendsFrame implementsActionListener
{
char OP=' ',a3,a2;TextFieldt1;StringStr1="";
inti=0,j,k=5;
Buttonb[]=newButton[24];

double v1=0.0,v2=0.0,a1=0,a4=0,result=0.0,memValue,c,co;
Strings[]={"M+","M-","MC","MR","C","CE","<-","Sqrt","1","2","3","+","4","5","6","-
","7","8","9","*","0",".","=","/"};
publicMyCal4()
{
super("Calculator");
setSize(400,600);
setFont(newFont("SansSerif",Font.BOLD,25));
setBackground(Color.yellow);
setLayout(newBorderLayout(5,5));
t1=newTextField("0",10);
t1.setBackground(Color.green);
t1.setForeground(Color.red);
t1.addActionListener(this);
publicvoidwindowClosing(WindowEvent e) {System.exit(0);}});
add(t1,BorderLayout.NORTH);
Panel p=newPanel();
p.setLayout(newGridLayout(6,4,10,10));
p.setBackground(Color.yellow);
add(p,BorderLayout.CENTER);
for(inti=0;i<24;i++)
{
b[i]=newButton(s[i]);
p.add(b[i]);
b[i].addActionListener(this);

b[i].setBackground(Color.cyan);
}
setVisible(true);
}
{
try{
Stringstr=ae.getActionCommand();
if(str.equals("+")||str.equals("-")||str.equals("*")||str.equals("/"))
{
v1=Double.parseDouble(t1.getText());
a4=v1;
a3=OP;
if(a3==' ')
a1=a4;
else if(a3=='+')
a1=a1+a4;
else if(a3=='-')
a1=a1-a4;
else if(a3=='*')
a1=a1*a4;
else
a1=a1/a4;
OP=str.charAt(0);
a2=OP;

t1.setText(Str1="");a3=a2;
}
else if(str.equals("=")||str.equals("M+")||str.equals("M-"))
{
v1=a1;
v2=Double.parseDouble(t1.getText());
if(OP=='+')
{result=v1+v2;a1=0.0;}
else if(OP=='-')
{result=v1-v2;a1=0.0;}
else if(OP=='*')
{result=v1*v2;a1=0.0;}
else if(OP=='/')
{result=v1/v2;a1=0.0;}
else if(OP=='')
result=c;
if(v1==0.0)
result=Double.parseDouble(t1.getText());
if(str.equals("="))
{
t1.setText(""+result);
str=Str1="";v1=v2=0;}
else if(str.equals("M+")||str.equals("M-"))
{
OP=' ';

if(str.equals("M+"))
{memValue+=result;}
else
{memValue-=result;}
c=result;
result=0;
t1.setText("0");str=Str1="";v1=v2=0;}
}
else if(str.equals("CE"))
{
memValue=0;a1=0.0;OP=' ';
t1.setText("0");
str="";
Str1="";
}
else if(str.equals("<-"))
{
StringRes="";
for(inti=0;i<((t1.getText()).length()-1);i++) Res+=((t1.getText()).charAt(i));
if(Res.equals(""))
{t1.setText("0");Str1="";}
else
t1.setText(Str1=Res);
}
else if(str.equals("."))

{
if(t1.getText()=="")
{t1.setText("0.");}
else
{ t1.setText(Str1=t1.getText()+"."); }
}
else if(str.equals("Sqrt"))
{
try
{
double temp=Double.parseDouble(t1.getText());
double tempd=result=Math.sqrt(temp);
StringresText=""+tempd;
resText=""+Double.parseDouble(resText.substring(0,resText.length()-2));
t1.setText(resText);}
catch(ArithmeticExceptionexcp)
{t1.setText("Divide by0.");}
}
else if(str.equals("C"))
{
v2=0.0;OP=' '; memValue=0.0;
t1.setText(""+a1);
}
else if(str.equals("MC"))
{

memValue=0.0;
}
else if(str.equals("MR"))
{
StringresText=""+memValue;
resText=""+Double.parseDouble(resText.substring(0,resText.length()-2));
t1.setText(resText);
}
else
{
t1.setText(Str1.concat(str));
Str1=t1.getText();
}
}catch(Exceptione){}
}
publicstaticvoidmain(Stringa[])
{ newMyCal4();}
publicInsetsgetInsets()
{
returnnewInsets(50,25,25,25);
} }
E:javaprograming>javacMyCal4.java
E:javaprograming>javaMyCal4

importjava.io.*;
classcopyfile
{
publicstaticvoidmain(Stringa[])
{
File in=newFile("hai.txt");
File out=newFile("hh.txt");
FileReaderins=null;
FileWriterouts=null;
try
{
ins=newFileReader(in);
outs=newFileWriter(out);
intch;
while((ch=ins.read())!=-1)
{
outs.write(ch);
}
}
catch(IOExceptione)
{
System.out.println(e);

System.exit(-1);
}
finally
{
try
{
ins.close();
outs.close();
}
catch(IOExceptione){}
}
} }
E:javaprograming>javaccopyfile.java
E:javaprograming>javacopyfile

importjava.io.*;importjava.io.File.*;
importjava.awt.*;
importjava.applet.*;
publicclassstudent1extendsFrame implementsActionListener,ItemListener
{
Stringmsg="",taa="";inti;Choice c[]=new Choice[3];
List lst=newList(4,true);
Label l[]=newLabel[16];booleanisnumberornot;
Stringlcap[]={"RegisterNo.","Name","Sex","Degree","Branch","Yearof Study","Date of
Birth","Hobby","Address","ExtraCurricularActivities","E-Mail Id","B.Tech","M.Tech","CSE","ECE","EEE"};
Buttonb1=new Button("submit");
Buttonb2=newButton("cancel");Checkboxh1,h2,h3;
Label p=newLabel("",Label.CENTER);

Choice yos=newChoice();RandomAccessFile pol=null;
publicstudent1()
{
for(i=0;i<7;i++)
for(i=7;i<11;i++)
{l[i]=newLabel(lcap[i],Label.CENTER);add(l[i]);}
for(i=0;i<3;i++)
add(p);
setLayout(null);
add(l11);
lst.add("Tennis");lst.add("Cricket");lst.add("BasketBall");lst.add("Hockey");
add(ta);add(h1);add(h2);add(h3);add(lst);
add(t1); add(t2); add(t3); add(ck1); add(ck2); add(branch); add(degree); add(yos);

add(b1); b1.addActionListener(this);b2.addActionListener(this); add(b2);
degree.add(lcap[11]);degree.add(lcap[12]);
for(i=13;i<16;i++)
yos.add("1"); yos.add("2"); yos.add("3");yos.add("4");
c[0].add(""+i);
degree.addItemListener(this);
c[1].add("January");c[1].add("February");c[1].add("March");
c[1].add("April");c[1].add("May");c[1].add("June");c[1].add("July");c[1].add("August");
c[1].add("September");c[1].add("October");c[1].add("November");c[1].add("December");
for(i=1990;i<2002;i++)
c[2].add(""+i);
for(i=0;i<6;i++)
l[i].setBounds(25,(60+(i*30)),90,20);
l[6].setBounds(25,320,90,20); l[7].setBounds(425,65,100,20);
l[8].setBounds(431,105,100,20); l[9].setBounds(632,105,150,20); l[10].setBounds(433,320,100,20);
l11.setBounds(300,40,280,20); lst.setBounds(642,125,130,89);
t1.setBounds(120,60,170,20); t2.setBounds(120,90,170,20); t3.setBounds(538,320,170,20);
ta.setBounds(461,125,130,90); ck1.setBounds(120,120,50,20); ck2.setBounds(170,120,60,20);
degree.setBounds(120,150,70,20); branch.setBounds(120,180,50,20); yos.setBounds(120,210,30,20);
c[0].setBounds(120,320,35,20); c[1].setBounds(160,320,77,20); c[2].setBounds(243,320,50,20);
h1.setBounds(530,65,105,20); h2.setBounds(644,65,100,20); h3.setBounds(750,65,100,20);

p.setBounds(120,420,530,20); b1.setBounds(300,380,65,20); b2.setBounds(400,380,65,20);
}
{if(ae.getActionCommand().equals("submit"))
{
{
}
else
{
try{
}
catch(Exceptione)
{
isnumberornot=true;
}
if(isnumberornot)
{
}
else
{
msg="";booleanisEmpty=t2.getText()==null||t2.getText().trim().length()==0;

if(isEmpty)
{
}
else
{
{
}
else
{
msg="";isEmpty=ta.getText()==null||ta.getText().trim().length()==0;
if(isEmpty)
{
}
else
{
{
}
else

{
if(isEmpty)
{
}
else
{
Stringdob,ptr="",pho[],h="";
taa="rnRegisterNo:"+t1.getText()
+"rnName :"+t2.getText()
+"rnSex :"+cbg.getSelectedCheckbox().getLabel()
+"rnDegree :"+degree.getSelectedItem()
+"rnBranch:"+branch.getSelectedItem()
+"rnYearOf Study:"+yos.getSelectedItem()
+"rnD.O.B:"+dob
+"rnHobbies:"+h

+"rnExtraCurricularActivities:"+ptr
+"rnAddress:"+ta.getText()
+"rnE-Mail Id:"+t3.getText();
msg="studentdetailsare submitted!";
} } } } } } }
try
{
pol=newRandomAccessFile("stud.txt","rw");
//newRandomAccessFile("stud.txt","rw").setLength(0);//clearsthe entirefilecontentandappend
pol.seek(pol.length());pol.writeBytes(taa+"rn");//withoutusingabove statement,appendingrecords
//continuously
pol.close();
taa="";
}
catch(Exceptione){}
}
if(ae.getActionCommand().equals("cancel"))
{
if(degree.getSelectedItem().equals("M.Tech")){yos.add("3");yos.add("4");}
t1.setText("");t2.setText("");t3.setText("");ta.setText("");
cbg.setSelectedCheckbox(null);h1.setState(false);h2.setState(false);h3.setState(false);
lst.deselect(0);lst.deselect(1);lst.deselect(2);lst.deselect(3);msg="";
degree.select(0);branch.select(0);c[0].select(0);c[1].select(0);c[2].select(0);
yos.select(0);
}
p.setText(msg);

p.setForeground(Color.red);
}
{
{
{yos.remove("3"); yos.remove("4");}
{yos.add("3"); yos.add("4");}
} }
{student1stu=newstudent1();
} }
{ System.exit(0);
} }

importjava.awt.*; importjava.sql.*; importjava.awt.event.*;
classsampjdbcextendsFrame implementsActionListener
{
Label l1,l2; TextFieldt1,t2; Buttonb; Connectionc; Statementst; ResultSetrs;
sampjdbc()
{
setFont(newFont("Arial",Font.BOLD,20));
l1 = newLabel("Login");
l2 = newLabel("Password");
t1= newTextField(10);
t2 =newTextField(10);
b= newButton("Next");
publicvoidwindowClosing(WindowEvente) {System.exit(0);}});
setLayout(newGridLayout(3,2));
add(l1);add(l2);add(t1);add(t2);add(b);
b.addActionListener(this);
try
{
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
Statementst=c.createStatement();
//Connection c=DriverManager.getConnection("jdbc:derby:cse;create=true");

c=DriverManager.getConnection("jdbc:derby:cse");
//st.execute("createtable stu(name char(20),idint)");
//st.execute("insertintostuvalues('ccc',333)");
//st.execute("insertintostuvalues('ddd',444)");
rs=st.executeQuery("select*fromstu");
}
{
try
{
if(rs.next())
{
t1.setText(rs.getString(1));
t2.setText(String.valueOf((rs.getInt(2))));
}
}
publicstaticvoidmain(Stringargs[])
{
sampjdbcj=newsampjdbc();
j.setTitle("StudentDB");
j.setSize(210,150);j.setBackground(Color.cyan);
j.setVisible(true);
} }

E:javaprograming>javacsampjdbc.java
E:javaprograming>javasampjdbc

importjava.sql.*; importjava.awt.*; importjava.applet.*; importjava.awt.event.*;
publicclassstudent6extendsFrame implementsActionListener,ItemListener
{
Stringmsg="";inti;Choice c[]=newChoice[3];
List lst=new List(4,true);intsar=0,moi=0,soi=0,tit,kiy,rows;
Label l[]=newLabel[16];
Stringlcap[]={"RegisterNo.","Name","Sex","Degree","Branch","Yearof Study","Date of
Birth","Hobby","Address","ExtraCurricularActivities","E-Mail Id","B.Tech","M.Tech","CSE","ECE","EEE"};
Stringlo[]={"ADD","SEARCH","DELETE","<<","<",">",">>","UPDATE","CLEAR"};
Checkbox h1,h2,h3;
Label p=newLabel("",Label.CENTER);booleanisnumberornot;
Buttonb[]=newButton[9];

Choice yos=newChoice();
Connectionco; Statementst; ResultSetrs; PreparedStatementq;
publicstudent6()
{
for(i=0;i<7;i++)
for(i=7;i<11;i++)
{l[i]=newLabel(lcap[i],Label.CENTER);add(l[i]);}
for(i=0;i<3;i++)
add(p);
setLayout(null);
add(l11);
lst.add("Tennis");
lst.add("Cricket");lst.add("BasketBall");lst.add("Hockey");lst.add("VolleyBall");
add(ta);add(h1);add(h2);add(h3);add(lst); add(t1);
add(t2); add(t3); add(ck1); add(ck2); add(branch); add(degree);add(yos);
for(i=0;i<9;i++)

{b[i]=new Button(lo[i]);add(b[i]);b[i].addActionListener(this);}
for(i=13;i<16;i++)
yos.add("1"); yos.add("2"); yos.add("3"); yos.add("4");
c[0].add(""+i);
degree.addItemListener(this);
c[1].add("January");c[1].add("February");c[1].add("March");c[1].add("April");
c[1].add("May");c[1].add("June");c[1].add("July");c[1].add("August");c[1].add("September");
c[1].add("October");c[1].add("November");c[1].add("December");
for(i=1990;i<2002;i++)
c[2].add(""+i);
for(i=0;i<6;i++)
l[i].setBounds(25,(60+(i*30)),90,20);
l[6].setBounds(25,320,90,20); l[7].setBounds(425,65,100,20);
l[8].setBounds(431,105,100,20); l[9].setBounds(632,105,150,20); l[10].setBounds(433,320,100,20);
l11.setBounds(300,40,280,20);lst.setBounds(642,125,130,59); t1.setBounds(120,60,170,20);
t2.setBounds(120,90,170,20); t3.setBounds(538,320,170,20); ta.setBounds(461,125,130,60);
ck1.setBounds(120,120,50,20); ck2.setBounds(170,120,60,20); degree.setBounds(120,150,70,20);
branch.setBounds(120,180,50,20); yos.setBounds(120,210,30,20); c[0].setBounds(120,320,35,20);
c[1].setBounds(160,320,77,20); c[2].setBounds(243,320,50,20); h1.setBounds(530,65,105,20);

h2.setBounds(644,65,100,20); h3.setBounds(750,65,100,20); p.setBounds(120,420,530,20);
b[0].setBounds(145,380,50,20); b[1].setBounds(213,380,70,20); b[2].setBounds(300,380,70,20);
try
{
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
//co=DriverManager.getConnection("jdbc:derby:csel;create=true");
co=DriverManager.getConnection("jdbc:derby:csel");
st=co.createStatement();
//st.execute("createtable human(RNOinteger,Name varchar(40),Genderchar(8),Degree char(20),
Branch char(20), YearOfStudyinteger,DOBdate,Addressvarchar(1000),EMailIdvarchar(60),Hobby
char(160), ECA char(160))");
//st.execute("insertintohumanvalues(221003116,'photons','Male','B.Tech','CSE',2,'1999-10-
19','Papanasam','karuppaiyaa4139@gmail.com','ReadingNovels','Tennis')");
st=co.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
rs=st.executeQuery("select*from human");
if(rs.first()){display();sar=1;}
q=co.prepareStatement("insertintohumanvalues(?,?,?,?,?,?,?,?,?,?,?)");
}catch(Exceptione){ e.printStackTrace();}
}
publicvoidreset()
{ if(degree.getSelectedItem().equals("M.Tech")){yos.add("3");yos.add("4");}
t2.setText("");t3.setText("");ta.setText("");
cbg.setSelectedCheckbox(null);h1.setState(false);h2.setState(false);h3.setState(false);
lst.deselect(4);lst.deselect(3);lst.deselect(2);lst.deselect(1);lst.deselect(0);

degree.select(0);branch.select(0);c[0].select(0);c[1].select(0);c[2].select(0);
yos.select(0);
}
{
try{
if(ae.getActionCommand().equals("ADD"))
{
{
}
else
{
try{
}
catch(Exceptione)
{
isnumberornot=true;
}
if(isnumberornot)
{
}

else
{
msg="";booleanisEmpty=t2.getText()==null||t2.getText().trim().length()==0;
if(isEmpty)
{
}
else
{
{
}
else
{
if(isEmpty)
{
}
else
{
{

}
else
{
if(isEmpty)
{
}
else
{
while(rs.next())
{
if((String.valueOf(rs.getInt(1))).equals(t1.getText())){msg="ERROR,RegNoisalreadypresentin
the record!";moi=1;}
}
if(moi!=1)
{
Stringdob,ptr="",bod="",good="",pho[],h="";
for(inttt=0;tt<12;tt++)
{
if(c[1].getSelectedIndex()==tt)
{if(tt<9)good="0"+(tt+1);
else{good=""+(tt+1);}

} }
bod=c[2].getSelectedItem()+"-"+good+"-"+c[0].getSelectedItem();
msg="studentdetailsare added!";
q.setInt(1,Integer.parseInt(t1.getText()));
q.setString(2,t2.getText());
q.setString(3,cbg.getSelectedCheckbox().getLabel());
q.setString(4,degree.getSelectedItem());
q.setString(5,branch.getSelectedItem());
q.setInt(6,Integer.parseInt(yos.getSelectedItem()));
q.setString(7,bod);
q.setString(8,ta.getText());
q.setString(9,t3.getText());
q.setString(10,h);
q.setString(11,ptr);
q.executeUpdate();
rs=st.executeQuery("select*from human");rs.last();
} }moi=0;} } } } } } }
if(ae.getActionCommand().equals("SEARCH"))

{
while(rs.next())
{
if((String.valueOf(rs.getInt(1))).equals(t1.getText())){display();msg="studentdetail is
searched!";break;}
else{
msg="EntervalidRegNo!";reset();
} } }
if(ae.getActionCommand().equals("CLEAR"))
{
msg="studentdetails are cleared!";reset();t1.setText("");
}
if(ae.getActionCommand().equals("DELETE"))
{
while(rs.next())
{
if((String.valueOf(rs.getInt(1))).equals(t1.getText()))
{
Stringfrog="delete fromhumanwhere RNO="+t1.getText()+"";
st.executeUpdate(frog);
msg="studentdetailsare deleted!";reset();
break; }
else{

msg="EntervalidRegNo!";reset();}
}
}
if(ae.getActionCommand().equals("<<"))
{
if(rs.first()) display();
msg="Firststudentrecord!";}
if(ae.getActionCommand().equals("<"))
{
if(rs.previous())
{display();
msg="Previousstudentrecord!";}
else
msg="YouHad ReachedThe Firstrecord!";
}
if(ae.getActionCommand().equals(">"))
{
if(rs.next())
{display();
if(sar==1){msg="Thisisfirststudentrecord!";sar=0;}
else
{msg="Nextstudentrecord!";}
}else
{msg="YouHad ReachedThe Last record!";}
}

if(ae.getActionCommand().equals(">>"))
{
if(rs.last()) display();
msg="Last studentrecord!";}
if(ae.getActionCommand().equals("UPDATE"))
{
while(rs.next())
{tit=rs.getRow();
if((String.valueOf(rs.getInt(1))).equals(t1.getText()))
{soi=1;
{
}
else
{
try{
}
catch(Exceptione)
{
isnumberornot=true;
}

if(isnumberornot)
{
}
else
{
msg="";boolean isEmpty=t2.getText()==null||t2.getText().trim().length()==0;
if(isEmpty)
{
}
else
{
{
}
else
{
if(isEmpty)
{
}
else

{
{
}
else
{
if(isEmpty)
{
}
else
{
Stringdob,ptr="",bod="",good="",pho[],h="";
for(inttt=0;tt<12;tt++)
{
if(c[1].getSelectedIndex()==tt)
{if(tt<9)good="0"+(tt+1);
else{good=""+(tt+1);}
} }

bod=c[2].getSelectedItem()+"-"+good+"-"+c[0].getSelectedItem();
rs.absolute(tit);rs.updateInt(1,Integer.parseInt(t1.getText()));
rs.updateString(2,t2.getText());
rs.updateString(3,cbg.getSelectedCheckbox().getLabel());
rs.updateString(4,degree.getSelectedItem());
rs.updateString(5,branch.getSelectedItem());
rs.updateInt(6,Integer.parseInt(yos.getSelectedItem()));
rs.updateString(7,bod);
rs.updateString(8,ta.getText());
rs.updateString(9,t3.getText());
rs.updateString(10,h);
rs.updateString(11,ptr);
rs.updateRow();msg="studentdetailsare updated!";
}moi=0;
} } } } } } break; } }
if(soi!=1)msg="RegNoisunavailableinthe record";
}
p.setText(msg);
p.setForeground(Color.red);
}catch(Exceptione){e.printStackTrace();}

}
{
{
{yos.remove("3"); yos.remove("4");}
{yos.add("3"); yos.add("4");}
} }
publicvoiddisplay()
{
try{
t1.setText(String.valueOf((rs.getInt(1))));
Stringsds=rs.getString(3).trim();
if(sds.equals("Male"))ck1.setState(true);
if(sds.equals("Female"))ck2.setState(true);
degree.select(rs.getString(4));
branch.select(rs.getString(5));
yos.select(rs.getString(6));
Stringuu=rs.getString(7);
Stringgh=uu.substring(8,10);
if(gh.charAt(0)=='0')gh=gh.substring(1,2);
c[0].select(gh);

gh=uu.substring(5,7);
if(gh.charAt(0)=='0')gh=gh.substring(1,2);
c[1].select((Integer.parseInt(gh)-1));
c[2].select(uu.substring(0,uu.indexOf("-")));
ta.setText(rs.getString(8));
h1.setState(false);h2.setState(false);h3.setState(false);
lst.deselect(4);lst.deselect(3);lst.deselect(2);lst.deselect(1);lst.deselect(0);
Stringhhp=rs.getString(10);
for(intzz=0;zz<47;zz++)
{
if(hhp.charAt(zz)=='S')h1.setState(true);
if(hhp.charAt(zz)=='R')h2.setState(true);
if(hhp.charAt(zz)=='P')h3.setState(true);
}
hhp=rs.getString(11);
for(intzz=0;zz<47;zz++)
{
if(hhp.charAt(zz)=='T')lst.select(0);
if(hhp.charAt(zz)=='C')lst.select(1);
if(hhp.charAt(zz)=='B')lst.select(2);
if(hhp.charAt(zz)=='H')lst.select(3);
if(hhp.charAt(zz)=='V')lst.select(4);
}
}

catch(Exceptione){e.printStackTrace();}
}
{student6stu=newstudent6();
} }
{
System.exit(0);
} }

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