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On my 64 bit PC I have installed both 32 bit and 64 bit JRE(Java Runtime Environment). I have a java application. According to my requirements I need to find out which of the installed java (32 bit or 64 bit), my application is using ? Finding java version alone (example : 1.7, 1.8 etc.) is not enough. I need to find out which bit version of JRE (32 bit or 64 bit) my application is using ?

The same implementation I want to do in C# application. I mean I want to know from C# application that which bit version(32 or 64) any java application on same PC will use ?

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  • Bit detection stackoverflow.com/q/1856565/1737819 Commented Aug 21, 2015 at 4:30
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    There is almost always a way to avoid needing to know this. Why do you need this information as you may be able to run without it? Commented Aug 21, 2015 at 6:25
  • @Peter It is requirement of our project Commented Aug 21, 2015 at 7:33

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Use SystemUtils class from org.apache.commons.lang :

String bit = System.getProperty("sun.arch.data.model"); //64
// commons-lang
String javaVersion = SystemUtils.JAVA_VERSION; //1.7.0_71
String jreVersion = SystemUtils.JAVA_RUNTIME_VERSION; //1.7.0_71-b14
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Thanks Ravi, I want to extend my question. I want to know that the same solution can be implemented from C# application or not ? I mean I want to know from C# application that which bit version of Java a java application will use on same PC.

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