?? picture.java
字號:
package com.javapatterns.composite.drawingtransparent;
import java.util.Vector;
public class Picture extends Graphics
{
private Vector list = new Vector(10);
public void draw()
{
for (int i = 0 ; i < list.size(); i++)
{
Graphics g = (Graphics) list.get(i);
g.draw();
}
}
public void add(Graphics g)
{
list.add(g);
}
public void remove(Graphics g)
{
list.remove(g);
}
public Graphics getChild(int i)
{
return (Graphics) list.get(i);
}
}
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