Could the ==
operator be used in this program
instead of the equals()
method?
No. The ==
operator tests
if two reference variables refer to the same object.
Here is the program, with changes:
import java.awt.*;
class EqualsDemo2
{
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 == pointB )
System.out.println( "The two variables refer to the same object" );
else
System.out.println( "The two variables refer to different objects" );
}
}
The picture of the situation (after the two new
operators have executed)
is the same as on the previous page.
What is the output of this program?