How to find if JVM is 32 or 64 bit from Java program.

You can find JVM bit size e.g. 32 bit or 64 bit by using either running java command from command prompt or by using System.getProperty() from Java program. Question is why do you want to know hardware or platform configuration while writing Java code which is supposed to write once and read anywhere(32 bit, 64 bit etc)? Yes we don't really need to know whether JVM is 32 bit or 64 bit more often but there are many situation when this matters

Check if JVM is 32 or 64 bit from Java program:
1)Since in 32 bit JVM maximum heap size in Java can not be more than 4GB (theoretically) , if you can get JVM version from script like running java command you can have different memory configuration for your application. Also if there is any specific JVM options which only applicable to 64 bit JVM than you can set those.

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Posted by bandrux

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