Jdk7 - G1 Garbage Collector

JDK 7 introduced a new Garbage Collector known as G1 Garbage Collection, which is short form of garbage first.

G1 garbage collector performs clean-up where there is most garbage.

To achieve this it split Java heap memory into multiple regions as opposed to 3 regions in the prior to Java 7 version (new, old and permgen space).

It's said that G1 is quite predictable and provides greater through put for memory intensive applications