constOvl.java

import java.util.*;

public class c1 {
    int a=0,b=0,c=0;
    c1(int n,int m)
    {
        a=n;
        b=m;
    }
    c1(int n,int m,int o)
    {
        a=n;
        b=m;
        c=o;
    }
    int add()
    {
        return a+b+c;
    }
    public static void main(String[] args) {
        c1 a1=new c1(10,20);
        c1 a2=new c1(10,20,30);
        System.out.println("add ="+a1.add());
        System.out.println("add ="+a2.add());
    }
}