Question

编写一个Java应用程序，在主线程中再创建一个Jframe类型的窗口，在该窗口中再创建一个线程giveWord。

线程giveWord每隔6秒钟给出一个汉字，用户使用汉字输入法将该汉字输入到文本框中。

WordThread.java

import
javax.swing.*;

public class
WordThread extends Thread

{ char word;

int k=19968;

JLabel com;

WordThread(JLabel com)

{ this.com=com;}

public void run()

{ k=19968;

while(true)

{ word=(char)k;

com.setText(""+word);

try{【代码1】//调用sleep方法使得线程中断6000豪秒}

catch(InterruptedException e){}

k++;

if(k>=29968) k=19968; }}}

ThreadFrame.java

import
java.awt.*;

import
java.awt.event.*;

import
javax.swing.*;

public class
ThreadFrame extends JFrame implements ActionListener

{ JLabel wordLabel;

JButton button;

JTextField inputText,scoreText;

【代码2】//用WordThread声明一个giveWord对象

int score=0;

ThreadFrame()

{ wordLabel=new JLabel("
",JLabel.CENTER);

wordLabel.setFont(new
Font("",Font.BOLD,72));

button=new JButton("开始");

inputText=new JTextField(8);

scoreText=new JTextField(5);

scoreText.setEditable(false);

【代码3】//创建giveWord，将wordLabel传递给WordThread构造方法的参数

button.addActionListener(this);

inputText.addActionListener(this);

add(button,BorderLayout.NORTH);

add(wordLabel,BorderLayout.CENTER);

JPanel southP=new JPanel();

southP.add(new JLabel("输入标签所显示的汉字后回车:"));

southP.add(inputText);

southP.add(scoreText);

add(southP,BorderLayout.SOUTH);

setBounds(100,100,350,180);

setVisible(true);

validate();

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); }

public void actionPerformed(ActionEvent e)

{ if(e.getSource()==button)

{ if(!(【代码4】)) //giveWord调用方法isAlive()

{ giveWord=new WordThread(wordLabel); }

try

{ 【代码5】//giveWord调用方法start() }

catch(Exception exe){} }

else if(e.getSource()==inputText)

{ if(inputText.getText().equals(wordLabel.getText()))

{ score++;}

scoreText.setText("得分:"+score);

inputText.setText(null); }}}
ThreadWordMainClass.java

public class
ThreadWordMainClass

{ public static void main(String args[])

{ new
ThreadFrame();}}

Answer 1

【代码1】//调用sleep方法使得线程中断6000豪秒
sleep(6000);

【代码2】//用WordThread声明一个giveWord对象
WordThread giveWord;

【代码3】//创建giveWord，将wordLabel传递给WordThread构造方法的参数
giveWord = new WordThread(wordLabel);

【代码4】
giveWord.isAlive()

【代码5】//giveWord调用方法start()
giveWord.start()

Answer 2

建议你使用PageOffice.