importjava.awt.*;importjava.awt.event.*;importjavax.swing.*;//将这个例子讲述JButton,JTextField,JLabel的用法publicclassCelsiusConverterimplementsActionListener{JFrameconve...

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

//将这个例子讲述JButton,JTextField,JLabel的用法

public class CelsiusConverter implements ActionListener {

JFrame converterFrame;

JPanel converterPaanel;

JTexField tempCelsius;

JLabel celsiusLabel,fahrenheitLabel;

JButton convertTemp;

//构造函数

public CelsiusConverter() {

//创建容器

converterFrame = new JFrame("温度转换器");

converterFrame.setSize(40,40);

converterJPanel = new JPanel();

converterJPanel.setLayout(new GridLayout(2,2));

//增加widgets

addWidgets();

//向frame中添加panel

converterFrame.getContentPane().add(converterPanel,BorderLayout.CENTER);

//关闭窗口时退出

converterFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//显示转换器

converterFrame.pack();

converterFrame.setVisible(true);

}

//为转换器创建和增加widgets

private void addWidgets(){

//创建widgets.

tempCelsius = new JTextField(2);

celsiusLabel = new JLabel("摄氏温度",SwingConstants.LEFT);

convertTemp = new JButton("转换……");

fahrenheitLabel = new JLabel("华氏温度",SwingConstants.LTFT);

//诊听转换器按钮发出的事件

convertTemp.addActionListener(this);

//向容器中添加widgets

converterPanel.add(tempCelsius);

converterPanel.add(celsiusLabel);

converterPanel.add(convertTemp);

converterPanel.add(fahrenheitLabel);

celsiusLabel.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));

fahrenheitLabel.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));

}

//实现ActionListener接口

public void actionPerformed(ActionEvent event) {

//将摄氏温度转换为双精度小数,并且转换为华氏温度

int tempFahr =

(int)((Double.parseDouble(tempCelsius.getText())) * 1.8 + 32);

fahrenheitLabel.setText(tempFahr + " Fahrenheit");

}

//main 方法

public static void main(String[] args)

{

//异常处理

try

{

UIManager.setLookAndFeel(

UIManager.getCrossPlatformLookAndFeelClassName());

}

catch(Exception e){}

CelsiusConverter converter = new CelsiusConverter();

}

}

运行时有9个错误……哪位好心人帮我调试一些啊

感谢两位的回答！！！！

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