Preview:
class A
{
    void add(int ... a)
    {
        int sum=0;
        for(int x:a)
        {
            sum=sum+x;
        }
        System.out.println("sum of numbers will be "+sum);
    }
}
class B 
{
    public static void main(String[] args)
    {
        A r= new A();
        r.add();
        r.add(10,20);
        r.add(20,30);
        r.add(20,20);
    }
}
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