Test7.java

package com.pekall.interview;

public class Test7 {
    public static void add3(Integer i) {
        int val = i.intValue();
        val += 3;
        i = new Integer(val);
    }

    public static void main(String args[]) {
        Integer i = new Integer(0);
        add3(i);
        System.out.println(i.intValue());
    }

}