Try this code to check:
and online compiler link where I ran this code to check JVM type of ideone.com :(output JVM of 32 bit Size).
https://ideone.com/6NKfZ3
/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
public static void main (String[] args) throws java.lang.Exception
{
// your code goes here
System.out.println("JVM Bit size: " + System.getProperty("sun.arch.data.model"));
}
}