public class test
{


	public static void main(String args[])
	{
		test Z = new test();
		String x = "Hello";
		Integer y = new Integer(10);
		System.out.println(x + " " + y); 
		Z.foo(x, y);
		System.out.println(x + " " + y); 

	}

	public void foo(String arg_x, Integer arg_y)
	{
		System.out.println(arg_x + " " + arg_y); 
		arg_x = "World";
		arg_y = arg_y.decode("20");
		System.out.println(arg_x + " " + arg_y); 
	}
}

class test2
{
        public String x = null;
        public Integer y = null;
                
        public test2()
        {
                x = "Hello";
                y = new Integer(10);
                System.out.println(x + " " + y);
        }

        public static void main(String args[])
        {
                test2 x = new test2();
		test z = new test();
        }
}