how many library's in java

Answer 1

By counting entries in the 'all classes' frame of the javadoc API:

4240 in java 8
4024 in java 7
3793 in java 6
3279 in java 5.0
2723 in java 1.4.2*
1840 in java 1.3.1*
* Javadocs prior to 5.0 are now offline.

Answer 2

sted baynk op indiya