choicetest.java

来自「这是清华大学编写的JAVA教材中所有题目的源代码！」· Java 代码 · 共 43 行

import java.awt.*;
import java.awt.event.*;

class ChoiceTest extends Frame implements ItemListener
{
	TextField tf=new TextField(30);
	Choice moviestars=new Choice();	
	
	public ChoiceTest(String title) 
	{
		super(title);

		moviestars.add("安东尼奥.班德拉斯");
		moviestars.add("莱昂纳多.迪卡普尼奥");
		moviestars.add("桑德.布洛克");
		moviestars.add("休.葛兰特");
		moviestars.add("朱莉亚.罗泊茨");
		
		moviestars.addItemListener(this);
					
		setLayout(new FlowLayout());
		add(tf);
		add(moviestars);
		
		setSize(300,200);
		setVisible(true);
	}

	public void itemStateChanged(ItemEvent e)
	{
		
		Choice c=(Choice)e.getSource();
		
		tf.setText("你选择了第"+c.getSelectedIndex()+"项："+c.getSelectedItem());
	}

	public static void main(String args[])
	{
		new ChoiceTest("选择框示例");
	}
}