Tareq Abed Rabbo Club Atuge Technologies 5/4/2007

1. Java 5, un bilan Tareq Abed Rabbo Club Atuge Technologies 5/4/2007

4. Evolution de Java 1995 Naissance de Java! Java SE 6 2006 - Scripting Language - JDBC 4.0 - JAXB 2.0 JDK 1.0 1996 - Initial release JDK 1.1 1997 - Java Beans - JDBC - RMI - Inner classes - AWT J2SE 1.2 1998 - Reflection - JIT compiler - Collections - Swing - strictfp Java SE 5.0 2004 - Generics - Metadata - Autoboxing - Enumerations - Varargs - Enhanced for loop - Concurrency utils - JMX J2SE 1.4 2002 - assert - JAXP - regular expression - NIO J2SE 1.3 2000 - HotSpot JVM - JNDI Java SE 7 2008

8. Exemple : JAXB 2 @XmlAccessorType(XmlAccessType. FIELD ) @XmlRootElement(name = &quot;Address&quot;, namespace=&quot;http://www.example.com/&quot;) public class Address { @XmlElement(required = true) private String name; private String city; <Address> <name>aaa</name> <city>bbb</city> </Address>

9. Exemple : JPA @Entity public class User { @Id @GeneratedValue(strategy = GenerationType. SEQUENCE , generator = &quot;seq_id_user&quot;) @SequenceGenerator(name = &quot;seq_id_user&quot;, sequenceName = &quot;seq_id_user&quot;) public Integer getId() { return id; }

10. Anatomie d’une annotation @Target({ TYPE , FIELD , METHOD , PARAMETER , CONSTRUCTOR , LOCAL_VARIABLE }) @Retention(RetentionPolicy. SOURCE ) public @interface SuppressWarnings { String[] value(); }

15. Enumération : exemple public enum Status { success , error , inProgress ; } Status status = …; switch (status) { case success : break ; case error : break ; case inProgress : break ; }

18. Génériques : Exemple Vector v = new Vector(); v.add( new String(&quot;abc&quot;); v.add( new Integer(4)); String s = (String)v.get(1); ClassCastException

19. Génériques : Exemple Vector <String> vs = new Vector <String> (); vs.add( new String(&quot;hello&quot;)); vs.add( new Integer(5)); // Erreur de compilation! String s = vs.get(0); // Pas de casting

23. Jconsole