尝试在 Netbeans 中编译“猜数字”程序时，该程序似乎继续运行，但程序没有执行。当用户单击“播放”JButton 时，playGame 方法应该运行，但似乎什么也没有发生，也没有抛出异常。
代码如下。谢谢夏兰
/*
* chpter 11 GUI programmong questions
* 11.15
*/
package Chapter11GUI;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionListener;
import java.awt.ActiveEvent;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JFrame;
import javax.swing.ImageIcon;
import javax.swing.Icon;
import javax.swing.SwingConstants;
import java.util.Random;
public class GuessGame extends JFrame {
//instance varibles/files
private JLabel intro;
private JLabel highorlow;
private JButton play;
private JTextField enterAnswer;
private int answer1;
private int answer2;
private ImageIcon icon1;
private ImageIcon icon2;
private JPanel panel;
private Random numberGenerator;
private int correctAnswer;
//constructor willll create GUI o a JFrame and register event handlers
public GuessGame() {
super("GuessGAme");
setLayout(new BorderLayout());
Icon icon1 = new ImageIcon(getClass().getResource("bug1.gif"));
Icon icon2 = new ImageIcon(getClass().getResource("travelbug.gif"));
//JtextField to get user input
enterAnswer = new JTextField(5);
//enterAnswer.addActionListener(handler);
enterAnswer.setText("Guess");
enterAnswer.setEditable(false);
//JLabel to display heading
intro = new JLabel("Press Play to begin....", icon1, SwingConstants.CENTER);
highorlow = new JLabel();
//place componments on a panel useing flowlayout manager to hold text aea only
panel = new JPanel();
panel.add(enterAnswer);
panel.add(highorlow);
//JButton to play again and use anoumonus class to call gameMethod
play = new JButton("Play");
add(panel, BorderLayout.CENTER);
add(intro, BorderLayout.NORTH);
add(play, BorderLayout.SOUTH);
play.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//if button clicked then setart game
play.setText("Enjoy");
playGame();
//throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}//end actionPerfomred
});//end annmous class ActionListener call from addAcionlistener method
}//end construtor
//a method to play the game
public void playGame() {
//generate randown number bewteen 1 and 100
numberGenerator = new Random();
correctAnswer = numberGenerator.nextInt(100);
panel.setBackground(Color.magenta);
answer1 = 0;
answer2 = 0;
enterAnswer.setEditable(true);
enterAnswer.setText("");
while ((answer1 != correctAnswer) && (answer2 != correctAnswer)) {
intro.setText("I have a number bewteen 1 and a 100."
+ "Can you guess my number?");
enterAnswer.setEditable(true);
enterAnswer.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == enterAnswer) {
answer1 = Integer.parseInt(enterAnswer.getText());
}
//set background as red as it is first guess
panel.setBackground(Color.red);
//noe set wether too high or two low
if (answer1 > correctAnswer) {
highorlow.setText("Guess Too High");
highorlow.setIcon(icon2);
} else if (answer1 < correctAnswer) {
highorlow.setText("You are gussing too low");
highorlow.setIcon(icon2);
}//end esle if statement
}//end actionPerfomred
});//end ActionListener
//get answer number 2
intro.setText("Try Again...");
enterAnswer.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == enterAnswer) {
answer2 = Integer.parseInt(enterAnswer.getText());
}
//check if gettingb hot or cold
//2nd answer is closer than first so turn red
if ((Math.abs(answer2 - correctAnswer)) > (Math.abs(answer2 - correctAnswer))) {
panel.setBackground(Color.red);
} else {
panel.setBackground(Color.BLUE);
}
//now add too hihg ot tewo low
//noe set wether too high or two low
if (answer2 > correctAnswer) {
highorlow.setText("Guess Too High");
highorlow.setIcon(icon2);
} else if (answer2 < correctAnswer) {
highorlow.setText("You are gussing too low");
highorlow.setIcon(icon2);
}//end esle if statement
}//end actionPerformed
});//end ActionLIstener
}//end while loop when answer is correct
//what to do if answer is correct
panel.setBackground(Color.orange);
enterAnswer.setText("Correct!!");
enterAnswer.setEditable(false);
play.setText("PLay Again?");
}//end method playGame
}//end class
/*
*chapter 11
* porgramming question 11.14
*/
package Chapter11GUI;
import javax.swing.JFrame;
public class GuessGameTest {
public static void main(String[] args) {
// instanistae frame form GuessGAme
GuessGame frame = new GuessGame();
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(350, 350);
}//end main
}//end clas test
谢谢。删除了 while 循环，程序现在正在运行，但不是我想要的。为了解决我正在使用 netbeans 调试器的问题，我遇到的问题是我似乎无法进入 playGame() 方法来查看到底出了什么问题。已尝试在匿名 ActionListener 内部类关联中使用步骤 (F7) 与 JButton 来访问 playGame()，并且我已将光标指向 playGame 的开头，然后运行到光标命令。在这两种情况下，调试器都会返回到测试应用程序主类。希望这是有道理的...
已尝试在 playGame() 处插入断点但无法访问。这可能与 playGame() 方法不是 java 主类的一部分有关吗？当有问题的类被实例化时，我似乎只能从主类访问类的构造函数.....