graphics.java

来自「《JAVA与模式》附书中源代码」· Java 代码 · 共 14 行

package com.javapatterns.composite.drawingtransparent;

abstract public class Graphics
{
    public abstract void draw();

    public abstract void add(Graphics g);

    public abstract void remove(Graphics g);

    public abstract Graphics getChild(int i);
}