This document provides an overview and introduction to Java programming concepts including syntax, loops, conditionals, classes, and methods. It discusses writing simple Java code examples like declaring variables, if/else statements, while loops, arrays, trying/catch blocks, and calling methods. The document also lists Java coding conventions like semicolons ending statements and curly braces defining code blocks. It mentions writing a class with a main method and coding a sample "Monday Morning at Bob's" application. Finally, it provides a reference to a Head First Java book for more information.

1. #1
Day #1
Breaking the Surface
A Quick Dip
Wildan Maulana
wildan.m@openthinklabs.com
http://training.openthinklabs.com/

2. Come on, the water's
great! We'll dive right in and
write some code, then compile and
run it. We're talking syntax, looping
and branching, and a look at what
makes Java so cool. You'll be
coding in no time.

3. The Way Java Works

4. What you'll do in Java

5. Avery brief history of Java

6. Look how easy It
is to write Java.
int size = 27;
String name = UFido";
Dog rnyDog = new Dog(name, size);
x = size – 5 ;
if (x < 15) myDog.bark(8);
while (x > 3) {
myDog.play();
}
int [ ] numList = {2,4,6,8};
System. out. print (“Hello” ) ;
System.out.print(“Dog: “ + name);
String nurn = “8";
int Z = Integar.parselnt(nurn);
try {
readTheFile(“myFile.txt”) ;
}
catch(FileNotFoundException ex) {
System.out.print(“File not found.");
}

7. Code structure in Java

8. Anatomy of a class

9. Writing a class with a main

10. What can you say
In the main method ?

11. Syntax Fun

12. Looping and Looping and ...

13. Bullet Points
● Statements end in a semicolon ;
● Code blocks are defined by a pair of curly braces { }
● Declare an int variable with a name and a type: int x;
● The assignment operator Is one equals sign =
● The equals operator uses two equals signs ==
● A while loop runs everything within its block (defined by curly
braces) as long as the conditional test Is true.
● If the conditional test is false, the while loop code block won't run,
and execution will move down to the code Immediately after the
loop block.
● Put a boolean test Inside parentheses:
while (x = 4) ( }

14. Conditional Branching

15. Sharpen Your Pencil

16. Coding a Serious
Business Application

17. Monday Morning at Bob's
…...

18. Let's Write a Program

19. Reference
● Kathy Sierra & Bert Bates;
Head First Java 2nd Edition, O'Reilly, 2002