// TestObject.java

// TestObject demonstrates issues of objects and references

public class TestObject {
public static void main(String args[]) {
    Rectangle Rect1 = new Rectangle(2.0,3.0);
    Rectangle Rect2 = new Rectangle(4.0,5.0);
    Rectangle Rect3 = Rect1;
    Rect1.setSpans(10.0,20.0);
    System.out.println(Rect1.toString());  // Displays "Rect[10.0,20.]"
    System.out.println(Rect2.toString());  // Displays "Rect[4.0,5.0]"
    System.out.println(Rect3.toString());  // Displays "Rect[10.0,20.0]" !
    Rect3 = Rect2;
    Rect1.setSpans(30.0,40.0);
    System.out.println(Rect1.toString());  // Displays "Rect[30.0,40.]"
    System.out.println(Rect3.toString());  // Displays "Rect[4.0,5.0]" !

    LocatedRect LR1 = new LocatedRect(1.0, 4.0, 1.0, 3.0);
    Rect3 = LR1;
    LR1.translateDest(10.0, 20.0);
    System.out.println(Rect3.toString());  // LR[11.0, 15.0, 22.0, 23.0] 
                                           // Note dynamic dispatching.
    LocatedRect LR4 = LR1.translateNonDest(10.0,20.0);
    System.out.println(LR1.toString());    //  LR[0.0, 1.0, 0.0, 1.0]
    System.out.println(LR4.toString());    //  LR(10.0, 11.0, 20.0, 21.0)
                                           //
}  // end main
}  // end TestObject