What is default garbage collector for Java 7, 8 and 9

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Contents of page :

• 1) What is default garbage collector for Java 9?
• 2) What is default garbage collector for Java 8 ?
• 3) What is default garbage collector for Java 7 ?

1) What is default garbage collector for Java 9?

G1 garbage collector is going to be the default garbage collector in jdk 9.

2) What is default garbage collector for Java 8 ?

For server class machine (with at least 2 processors and at least 2 GB of physical memory) - The default garbage collector is the parallel collector.

For your information : These days most of the machines do have at least 2 processors so, on most of machines default garbage collector is the parallel collector.

For client class machine( single processor or 32-bit platform machine), The default garbage collector is the serial collector.

Note :  Many people believe G1 is the default but it is not default garbage collector in jdk 8.

It can be enabled by using vm para -XX:+UseG1GC

Read more on : G1 garbage collector / Garbage first collector in java

3) What is default garbage collector for Java 7 ?

For server class machine (with at least 2 processors and at least 2 GB of physical memory) - The default garbage collector is the parallel collector.

For client class machine( single processor or 32-bit platform machine), The default garbage collector is the serial collector.

Note :  G1 was introduced in java 7 but it is not garbage collector in jdk 7.

Read more on : G1 garbage collector / Garbage first collector in java

SUMMARY>

So in this core java tutorial we learned what are default garbage collector in different versions of Java like in 7, 8 and 9.

1) What is default garbage collector for Java 9?

G1 garbage collector

2) What is default garbage collector for Java 8 ?

For server class machine - parallel collector.

For client class machine - serial collector.

3) What is default garbage collector for Java 7 ?

For server class machine - parallel collector.

For client class machine - serial collector.

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Labels: Core Java Garbage collection in java