How do you test if two points are equivalent? (i.e., that they indicate the same location in the 2D plane?)

A good answer might be:

The x value and the y value of each point is the same.

The equals() Method

The equals() method is defined for class Point to perform this test: 

pointA.equals( pointB )   ----- returns true if the two points
                                contain equivalent data

Here is an example program showing this: 


import java.awt.*;
class EqualsDemo
{
  public static void main ( String arg[] )
  {
    Point pointA = new Point( 7, 99 );    // first Point
    Point pointB = new Point( 7, 99 );    // second Point with equivalent data

    if ( pointA.equals( pointB ) )
      System.out.println( "The two objects contain the same data: " + pointA );
    else
      System.out.println( "The two objects are not equivalent: " + pointA + 
          " differs from" + pointB);     

  }
}

QUESTION 16:

What is the output of this program? (You might wish to copy-paste-and-run this program to check your answer.)