13. One Object, with Changing Data



Answer:
How many Point objects are created by this program? 
     One — the object referenced by pt
How many temporary String objects are created by this program? 
     Two — one temporary String object for each println()






One Object, with Changing Data



    
objectsBeforeAfter
The program changes the data inside a Point object using that object's move() method:



    
        

            
                
import java.awt.*;
class PointEg4
{
  public static void main ( String arg[] )
  {
    Point pt = new Point( 12, 45 );  // construct a Point
    System.out.println( pt );     

    pt.move( -13, 49 ) ;             // change the x and y in the Point
    System.out.println( pt ); 
  }
}       

            		
        

    





    





    













Question 13:
Can a constructor be used to change the data inside an object?