Utilities

Java applications

JDK Differences

Java JDK Major Releases and Released Differences
Date	Version	Codename	New Features Introduced In that Release
1996-01-23	1.0	Oak?	Java released to public
1997-02-18	1.1	Sparkler	No longer supported. Added a totally new event model, using Listeners, anonymous classes and inner classes. This is the level Microsoft has trapped many of its customers at. Netscape proprietary RSA code signing. Microsoft proprietary CAB code signing.
1998-12-04	1.2	Playground	No longer supported. Added ArrayList and other Collections, added Swing (though the initial release is missing many methods). Added DSA code signing. Added BufferedImage
2000-05-08	1.3	Kestrel	No longer supported. java.util.Timer, java.lang. StrictMath, Runtime. addShutdownHook, java.awt. Robot, java.awt.print. PageAttributes, java.media.sound (MIDI and sampled). Hotspot introduced. RMI now has the option of using CORBA’s IIOP protocol. Added RSA code signing, which quickly effectively obsoleted DSA certificates.
2002-02-13	1.4	Merlin	No longer supported. added regexes, assertions and nio.
2004-09-29	1.5	Tiger	added StringBuilder, java.util.concurrent, generics, enums, annotations, autoboxing, covariant return types, for:each, static import and variable-length argument lists. MacOS for the PowerPC is stuck at version 1.5. more.
2006-12-12	1.6	Mustang	System tray, subpixel antialiasing, Document-modal, Application-modal, Toolkit-modal, Applet splash screens, JTable sorting, true double buffering, digitally signed XML files, JWS support for *.ico and *.png, JavaCompiler (ability to invoke javac cleanly), JDBC 4.0, smart card API, Console. readPassword, improved drag & drop. Apple OS X 10.5 supports JDK 1.6.0_13. pluggable annotations, more.
not released yet 2010-10-??	1.7	Dolphin	There is still on-going discussion on what should be included. You can see early access code.

Java code names

Firstly when java was release its name is Oak. After some time the creator of java found the name Java.

I found some of the intersting things like the code names of the reeases of the java which I am going to describe below.

Version	Description of Code Name	Code Name	Date of Release
JDK 1.1.4		Sparkler	Sept 12, 1997
JDK 1.1.5		Pumpkin	Dec 3, 1997
JDK 1.1.6	A female character in Bible	Abigail	April 24, 1998
JDK 1.1.7	Roman cognomen used by several politicians	Brutus	Sept 28, 1998
JDK 1.1.8	Name of a person/Football club	Chelsea	April 8, 1999
J2SE 1.2	Playground	Playground	Dec 4, 1998
J2SE 1.2.1		(none)	March 30, 1999
J2SE 1.2.2		Cricket	July 8, 1999
J2SE 1.3		Kestrel	May 8, 2000
J2SE 1.3.1		Ladybird	May 17, 2001
J2SE 1.4.0		Merlin	Feb 13, 2002
J2SE 1.4.1		Hopper	Sept 16, 2002
J2SE 1.4.2		Mantis	June 26, 2003
J2SE 5.0 (1.5.0)		Tiger	Sept 29, 2004
Java SE 6		Mustang
Java SE 7		Dolphin

Here is the brief history of java. Some of you wanted to know that how many packages are there in java when it is officially released well here are the some facts.

Java 1.0 - 212 classes in 8 packages

Java 1.1 - 503 classes in 23 packages

Java 1.2/2.0 - 1,520 classes in 59 packages

Java 1.3 - 1842 classes in 76 packages

Java1.4 - 2991 classes in 135 packages

Java 5.0 - 3562 classes in 166 packages