go to previous page   go to home page   go to next page hear noise

Answer:

Yes. The method just returns a reference to the String itself. No new object is created.


Example Program Extended

import java.awt.*;
class PointEg3
{

  public static void main ( String arg[] )
  {
    Point a = new Point();              // declarations and construction combined
    Point b = new Point( 12, 45 );
    Point c = new Point( b );

    System.out.println( a ); // create a temporary String based on "a", print it out
    System.out.println( b ); // create a temporary String based on "b", print it out
    System.out.println( c ); // create a temporary String based on "c", print it out
  }
}

The example program has been changed, yet again. The program prints out:

java.awt.Point[x=0,y=0]
java.awt.Point[x=12,y=45]
java.awt.Point[x=12,y=45]

This program is deceptively short. However, its execution calls for quite a bit of activity.


QUESTION 11:

Just as the program is about to close, how many objects have been created?

How many object references are there?

Has any garbage been created?


go to previous page   go to home page   go to next page