If we overload a method and we pass String in one method and Object in another So while calling if we pass ‘null’ then which method will be called and why?

class A
{
 public void B()
 {
     System.out.println("B");
 }
 public void str(Object s)
 {
  System.out.println("==output="+s);
 }

 public void str(String s)
 {
  System.out.println("=Output 2=="+s);
 }
 public void str(int s)
 {
  System.out.println("=i=="+s);
 }

}

public class Test extends A{

 public void B()
 {
  System.out.println("BB");
 }
 public static void main(String args[])
 {
  A a=new Test();

  a.B();

  a.str(null);
  a.str("ss");

// If we overload a method and we pass String in one method and Integer in another So while calling if we pass ‘null’ then which method will be called and why?


  a.str(null);
  a.str(5);

 }
}


OUTPUT

BB

=output==null

=output2==ss

=Output==null

=i==5