baserects.java

书籍"Java_面向事件编程"的附带光盘代码

import objectdraw.*;
import java.awt.*;

// Class representing empty collection of nested rectangles
public class BaseRects implements NestedRectsIfc {                  
    // constructor has nothing to initialize}
    public BaseRects() { }
    
    // move nested rectangles to (x,y)
    public void moveTo(double x, double y) { }
    
    // remove nested rectangles from canvass
    public void removeFromCanvas() { }
}