How do you find if JVM is 32-bit or 64-bit from Java Program?

Question

How we can add two 64 bit number on 32 bit machine using c/c++ program ?

Answer 1

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"));
    }
}