Question

java错误找不到符号

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

public class BargainAgent extends JFrame
{
private JLabel bpriceL,spriceL,timesL;
private JTextField bpriceTF,spriceTF,timesTF;
private JButton bargainB,okayB,exitB;
private static final int WIDTH=400;
private static final int HEIGTH=300;

public BargainAgent()
{private JLabel bpriceL,spriceL,timesL;
private JTextField bpriceTF,spriceTF,timesTF;
private JButton bargainB,okayB,exitB;
bpriceL=new JLabel("请输入你还的价格:",SwingConstants.RIGHT);
spriceL=new JLabel("agent报价:",SwingConstants.RIGHT);
timesL=new JLabel("剩余议价次数:",SwingConstants.RIGHT);

bpriceTF=new JTextField(10);
spriceTF=new JTextField(10);
timesTF=new JTextField(10);

bargainB=new JButton("议价");
bargainBActionEnentHandler bbHandler=new bargainBActionEventHandler(); //找不到符号
bargainB.addActionListener(bbHandler);
okayB=new JButton("接受议价");
okayBActionEventHandler obHandler=new okayBActionEventHandler(); //找不到符号
okayB.addActionListener(obHandler);
exitB=new JButton("拒绝议价");
exitBActionEventHandler ebHandler=new exitBActionEventHandler(); //找不到符号
exitB.addActionListener(ebHandler);
setTitle("议价界面");

Container pane=getContentPane();
pane.setLayout(new GridLayout(5,2));
pane.add(bpriceL);
pane.add(bpriceTF);
pane.add(spriceL);
pane.add(spriceTF);
pane.add(timesL);
pane.add(timesTF);
pane.add(bargainB);
pane.add(okayB);
pane.add(exitB);
setSize(WIDTH,HEIGTH);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}

public static void main(String[]args)
{
BargainAgent rectObject=new BargainAgent();

}
}

这是我做的一个界面的代码，事件响应程序没写，但编译时出现了找不到符号的问题，哪位高手能帮忙指出错在什么地方啊，先谢谢了！

Answer 1

你程序里有
bargainBActionEventHandler
okayBActionEventHandler
exitBActionEventHandler
这几个类吗，没有的话肯定找不到符号了。

还有你的构造方法里怎么还有private修饰的变量。

程序不是你做的吧！

我给你改了，你运行一下：
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

public class BargainAgent extends JFrame
{
private JLabel bpriceL,spriceL,timesL;
private JTextField bpriceTF,spriceTF,timesTF;
private JButton bargainB,okayB,exitB;
private static final int WIDTH=400;
private static final int HEIGTH=300;

public BargainAgent()
{
bpriceL=new JLabel("请输入你还的价格:",SwingConstants.RIGHT);
spriceL=new JLabel("agent报价:",SwingConstants.RIGHT);
timesL=new JLabel("剩余议价次数:",SwingConstants.RIGHT);

bpriceTF=new JTextField(10);
spriceTF=new JTextField(10);
timesTF=new JTextField(10);

bargainB=new JButton("议价");
ActionListener bbHandler=new ActionListener(){

public void actionPerformed(ActionEvent e) {
//这里写入"议价"事件响应代码
System.out.println("议价");
}

}; //找不到符号
bargainB.addActionListener(bbHandler);
okayB=new JButton("接受议价");
ActionListener obHandler=new ActionListener(){

public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
//这里写入"接受议价"事件响应代码
System.out.println("接受议价");
}

};
okayB.addActionListener(obHandler);
exitB=new JButton("拒绝议价");
ActionListener ebHandler=new ActionListener(){

public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
//这里写入"拒绝议价"事件响应代码
System.out.println("拒绝议价");
}

};
exitB.addActionListener(ebHandler);
setTitle("议价界面");

Container pane=getContentPane();
pane.setLayout(new GridLayout(5,2));
pane.add(bpriceL);
pane.add(bpriceTF);
pane.add(spriceL);
pane.add(spriceTF);
pane.add(timesL);
pane.add(timesTF);
pane.add(bargainB);
pane.add(okayB);
pane.add(exitB);
setSize(WIDTH,HEIGTH);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}

public static void main(String[]args)
{
BargainAgent rectObject=new BargainAgent();

}
}

Answer 2

给你报一个错误太便宜你了
public class BargainAgent extends JFrame
{
private JLabel bpriceL,spriceL,timesL;
private JTextField bpriceTF,spriceTF,timesTF;
private JButton bargainB,okayB,exitB;
private static final int WIDTH=400;
private static final int HEIGTH=300;

public BargainAgent()
{private JLabel bpriceL,spriceL,timesL;
private JTextField bpriceTF,spriceTF,timesTF;
private JButton bargainB,okayB,exitB;

上面已经定义了 JLabel 等 下面为什么还要定义？不报错都难

bargainBActionEnentHandler 这是个什么东东？

吧你NEW 的那个奇怪的东西替换成：
bargainB.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
//这里写时间相应时的代码
}
});