A static class method can be invoked by simply using the name of the method alone. (True/False)

Which of the following function-definitions are overloading the method given below :

int sum(int x, int y) {}

1. int sum(int x, int y, int z) { }
2. float sum(int x, int y) { }
3. int sum (float x, float y) { }
4. int sum (int a, int b) { }
5. float sum(int x, int y, float z) { }

How is call-by-value way of function invoking different from call-by-reference way ? Give appropriate examples supporting your answer.

What is the output of the following program ? Justify your answer.

class Check	{
    public static void chg (String (nm) )   {
        nm = "Aamna" ;	//  copy "Aamna" to nm
    }
    public void test( ) { 
        String name= "Julius";
        System.out.println (name); 
        chg(name); 
        System.out.println(name);
    }
}