How to get amount of free memory in jvm ??? (Java)

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COMPLETE SOURCE CODE FOR : FreeMemoryInJvm.java
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public class FreeMemoryInJvm
{
public static void main(String[]args)
{
 System.out.println("Free Memory In Jvm is : "+Runtime.getRuntime().freeMemory()+" bytes");
}
}


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JUST COMPILE AND EXECUTE IT
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