PPT Slide

/* in class SwapTester’s main method (cont’d) . . . */

MyObject p, q, r, s;

p = new MyObject ("hello");

q = new MyObject ("hello"); r = q;

s = new MyObject ("world");

System.out.println ("p=" + p + " q=" + q + " r=" + r + " s=" + s);

System.out.println ("p==q is " + (p==q));

System.out.println ("q==r is " + (q==r));

swapObject1 (p, s);

System.out.println ("p=" + p + " q=" + q + " r=" + r + " s=" + s);

swapObject2 (p, s);

System.out.println ("p=" + p + " q=" + q + " r=" + r + " s=" + s);

}// end of main

}// class SwapTester

p=hello q=hello r=hello s=world

p==q is false

q==r is true

Doing swapObject1

p=hello q=hello r=hello s=world

Doing swapObject2

p=world q=hello r=hello s=hello

Output: