Difference between jdk 1.6 and jdk 1.7?

Question

What is the difference between jdk 1.6 and 1.7?

Can anyone say package packages are .lang, .util, .io, etc. changed?

Answer 1

This link may shed light: JDK 7: new interfaces, classes, enumerations, and methods . Here are some examples of new features in Java 7.

Answer 2

Java SE 7 Features and Improvements http://www.oracle.com/technetwork/java/javase/jdk7-relnotes-418459.html

Check out the new features in Java 7 http://radar.oreilly.com/2011/09/java7-features.html (see also http://en.wikipedia.org/wiki/Convention_over_configuration for the diamond operator)