一个简单的界面小程序，求解（新手）

[try-catch-finally]

//ButtonClick.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ButtonClick
{
public static void main(String[] args)
{
ButtonFrame frame = new ButtonFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.show();
}
}

class ButtonFrame extends JFrame
{
public ButtonFrame()
{
setTitle("ButtonClick");
setSize(WIDTH, HEIGHT);

// 将panel加入到frame
ButtonPanel panel = new ButtonPanel();
Container contentPane = getContentPane();
contentPane.add(panel);
}

public static final int WIDTH = 300;
public static final int HEIGHT = 200;
}

class ButtonPanel extends JPanel
{
public ButtonPanel()
{
//创建按钮
JButton Button1 = new JButton("按钮一");
JButton Button2 = new JButton("按钮二");

//将按钮加入panel
add(Button1);
add(Button2);

//创建监听器
ButtonAction ButtonAction1 = new ButtonAction("按钮一");
ButtonAction ButtonAction2 = new ButtonAction("按钮二");

//注册监听器
Button1.addActionListener(ButtonAction1);
Button2.addActionListener(ButtonAction2);
}

public void paintComponent(Graphics g)
{
super.paintComponent(g);

//显示用户的点击操作
g.drawString(" " + ButtonText, 90, 120);
System.out.println();
}

private class ButtonAction
implements ActionListener
{
public ButtonAction(String text)
{
clicktext =text;
}

public void actionPerformed(ActionEvent event)
{
ButtonText += ("您点击的是："+clicktext );
repaint();
}

private String clicktext="";

}

public String ButtonText = "";

}

哪位兄弟能帮我改一下程序，让每次点一下结果会换行，而不是一直往后面添加

[chenchenyangll]

ButtonText += ("您点击的是："+clicktext );

这个改为

ButtonText += ("您点击的是："+clicktext+"\n" );
行不行？ 我没试过 = =

[try-catch-finally]

[Quote=引用 1 楼 chenchenyangll 的回复:]
ButtonText += ("您点击的是："+clicktext );

这个改为

ButtonText += ("您点击的是："+clicktext+"\n" );
行不行？ 我没试过 = =
[/Quote]

这个不行。。。

[softjet]

ButtonText += ("您点击的是："+clicktext+"\n\r" );

[try-catch-finally]

[Quote=引用 3 楼 softjet 的回复:]
ButtonText += ("您点击的是："+clicktext+"\n\r" );
[/Quote]

我试了一下，好像也不行。。。。

[softjet]

那就用这种方式
http://club.pchome.net/topic_5_60_125240_1__.html

[possibleonline]

drawString看来不行,还得用TextArea

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ButtonClick {
	public static void main(String[] args) {
		ButtonFrame frame = new ButtonFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.show();
	}
}

class ButtonFrame extends JFrame {
	public ButtonFrame() {
		setTitle("ButtonClick");
		setSize(WIDTH, HEIGHT);

		// 将panel加入到frame
		ButtonPanel panel = new ButtonPanel();
		Container contentPane = getContentPane();
		contentPane.add(panel);
	}

	public static final int WIDTH = 300;
	public static final int HEIGHT = 200;
}

class ButtonPanel extends JPanel {
	JTextArea area=null;
	public ButtonPanel() {
		// 创建按钮
		JButton Button1 = new JButton("按钮一");
		JButton Button2 = new JButton("按钮二");

		// 将按钮加入panel
		add(Button1);
		add(Button2);

		// 创建监听器
		ButtonAction ButtonAction1 = new ButtonAction("按钮一");
		ButtonAction ButtonAction2 = new ButtonAction("按钮二");

		// 注册监听器
		Button1.addActionListener(ButtonAction1);
		Button2.addActionListener(ButtonAction2);
		
		area=new JTextArea(20,40);
		area.setEditable(false);
		JScrollPane pane=new JScrollPane(area);
		add(pane);
//		area.setText("aaaaaaaaaaa\naaaaaaaaaaaa");
	}

	public void paintComponent(Graphics g) {
		super.paintComponent(g);

		// 显示用户的点击操作
//		g.drawString(" " + ButtonText, 90, 120);
//		g.drawChars(ButtonText.toCharArray(), 0, ButtonText.toCharArray().length, 90, 120);
//		g.drawString("aaaaa\r\naaaaaaaa", 90, 122);
		area.setText(ButtonText);
		System.out.println();
	}

	private class ButtonAction implements ActionListener {
		public ButtonAction(String text) {
			clicktext = text;
		}

		public void actionPerformed(ActionEvent event) {
			ButtonText += ("您点击的是：" + clicktext+"\n");
			repaint();
		}

		private String clicktext = "";

	}

	public String ButtonText = "";

}

[lh_fengyuzhe]

public void paintComponent(Graphics g)
{   
super.paintComponent(g);
//从Vector中取出所有字符串，分别drawstring，请自行根据字体大小算出每行字的height坐标，暂时用20代替
for (int i = 0; i < ButtonText.size(); i++) {
	//显示用户的点击操作
	g.drawString(" " + ButtonText.get(i), 90, 120 + 20*i);
}
System.out.println();
}

//每点击一次，将String添加到Vector中去
public void actionPerformed(ActionEvent event)
{  
ButtonText.add("您点击的是："+clicktext);
repaint();
}
public Vector<String> ButtonText = new Vector<String>();

[try-catch-finally]

[Quote=引用 6 楼 possibleonline 的回复:]
drawString看来不行,还得用TextArea

Java code

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ButtonClick {
public static void main(String[] args) {
Butt……
[/Quote]
这个可以用啊，谢谢

[我需要更加努力]

不会、、、、、、嘿嘿