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Java explicit space and RAM

I have a question that bothered me after reading an article on thread dump analysis. There was one paragraph that said that the logical maximum heap size in a 32-bit JVM is 4 GB.

This link indicates that the maximum heap size on a 32-bit Windows machine will be around 1.4 - 1.6 GB.

My question is, let's say if you have RAM, say, about 8 GB, does this mean that I can only use 1.4-1.6 GB if I were a 32-bit JVM for you? And what will be the maximum size for a 64-bit JVM?

Appreciate your help on this, as I am embarrassed by the same.

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4 answers

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