【Java开源代码栏目提醒】:网学会员为广大网友收集整理了,ActionListenerUse.java,希望对大家有所帮助!
package chapter11;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.List;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.applet.*;
public class ActionListenerUse extends Applet implements ActionListener {
List list = new List(3, false);
public void init() {
list.add("RED");
list.add("GREEN");
list.add("BLUE");
list.add("YELLOW");
list.select(0);
add(list);
list.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
Graphics g = getGraphics();
String s = list.getSelectedItem();
if (s == "RED")
g.setColor(Color.red);
else if (s == "GREEN")
g.setColor(Color.green);
else if (s == "BLUE")
g.setColor(Color.blue);
else if (s == "YELLOW")
g.setColor(Color.yellow);
else
g.setColor(Color.BLACK);
g.fillRect(50, 80, 80, 80);
}
}
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