Question

java事件处理如何将单击鼠标值添加到文本框

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

public class J_Table extends JFrame{
public static final int WIDTH = 400;
public static final int HEIGHT = 250;
public static final String checkedLabel="";

private JTextField countertext;
private JButton counterbutton;
JTextField boardout;

String s;
public J_Table()
{
super("计算器");
setSize(WIDTH, HEIGHT);
Container c =getContentPane();
c.setLayout(new GridLayout());

//建立容纳操作的面板
JPanel buttonPanel = new JPanel();
int i;
for(i=0;i<10;i++)
{
s=""+i;
counterbutton=new JButton(s);
buttonPanel.add(counterbutton);
c.add(buttonPanel);

}

counterbutton=new JButton("=");
buttonPanel.add(counterbutton);
c.add(buttonPanel);
counterbutton=new JButton("c");
buttonPanel.add(counterbutton);
c.add(buttonPanel);
counterbutton=new JButton(" +");
buttonPanel.add(counterbutton);
c.add(buttonPanel);
counterbutton=new JButton(" -");
buttonPanel.add(counterbutton);
c.add(buttonPanel);
counterbutton=new JButton(" * ");
buttonPanel.add(counterbutton);
c.add(buttonPanel);
counterbutton=new JButton(" /");
buttonPanel.add(counterbutton);
c.add(buttonPanel);

JPanel textPanel = new JPanel();
//新建文本区

countertext = new JTextField(checkedLabel,10);
textPanel.add(countertext);

c.add(textPanel);

//用匿名类来实现按钮动作
JButton n = new JButton();
n.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
char a ='0';
String v =String.valueOf(a);
if(a!='='&&a!='c')
{
JTextField boardout=(JTextField)e.getSource();
countertext.setText(v);
}
else
{

}

}

}
);

}

}
这是我的程序，请高手指教！

Answer 1

对界面的鼠标事件进行处理
将鼠标点击次数保存后 传入到文本框

Answer 2

MouseListener ml = new MouseListener(){
public void mouseClicked(MouseEvent e){
System.out.println("Mouse clicked.");
}
......
};

boardout.addMouseListener(ml);

你的问题不太明确，没理解。

Answer 3

jb 就简单了，判断是哪个按钮被按下

然后，做相应的处理就可以了

Answer 4

长