我是一名需要为我的Java课程完成游戏的高中生。我的游戏围绕着使用关卡。我在游戏中遇到的主要问题是当我装载我的一个面板时。发生的事情是屏幕僵住了。我无法按下按钮甚至关闭面板。终端没有出现错误，这是在成功编译之后。
一些信息：
请原谅任何对你不具吸引力的代码。感谢。
class Level1 extends JPanel implements ActionListener
{
private String [] questions;
private String question;
private String [] answers;
private String answer;
private String [] images;
private String image;
private String [] wrongAnswers1;
private String wrongAnswer1;
private String [] wrongAnswers2;
private String wrongAnswer2;
private String [] wrongAnswers3;
private String wrongAnswer3;
private int time;
private int integer;
private int problemNumber;
private int lives;
private int answerLocation;
private int wrongOrNot;
private int num;
private boolean finished;
private boolean newProblem;
private boolean getOut;
private boolean makeOrder;
private JButton restartButton;
private JButton getOutButton;
private ButtonGroup colorgroup;
private JRadioButton answer1;
private JRadioButton answer2;
private JRadioButton answer3;
private JRadioButton answer4;
private File file;
private PrintWriter makesOutput;
private Scanner lookForTwo;
private String number;
private boolean thereIsTwo;
private Timer timer;
private ArrayList<Integer> list1;
private int i;
private int y;
public Level1()
{
questions = new String[15];
//filled in each part of the array;
question = "";
answers = new String[15];
//filled in each part of the array
answer = "";
images = new String[15];
//filled in each part of the array
image = "";
wrongAnswers1 = new String[15];
//filled in each part of the array
wrongAnswer1 = "";
wrongAnswers2 = new String[15];
//filled in each part of the array
wrongAnswer2 = "";
wrongAnswers3 = new String[15];
//filled in each part of the array
wrongAnswer3 = "";
time = 60;
integer = -1;
problemNumber = 1;
lives = 3;
answerLocation = -1;
wrongOrNot = 1;
num = 0;
finished = false;
newProblem = true;
getOut = false;
makeOrder = true;
restartButton = new JButton("Restart"); //create buttons: Restart, Exit
add(restartButton);
restartButton.addActionListener(this);
getOutButton = new JButton("Exit");
add(getOutButton);
getOutButton.addActionListener(this);
colorgroup = new ButtonGroup();
answer1 = new JRadioButton("");//create radiobuttons to hold answer
colorgroup.add(answer1);
answer2 = new JRadioButton("");
colorgroup.add(answer2);
answer3 = new JRadioButton("");
colorgroup.add(answer3);
answer4 = new JRadioButton("");
colorgroup.add(answer4);
//radiobuttons on south side
file = new File("SaveFiles.txt");
makesOutput = null; //variables for try-catch block
lookForTwo = null;
number = "";
thereIsTwo = false;
timer = new Timer(0,this);
timer.setDelay(1000);
timer.start();
list1 = new ArrayList<Integer>();
i = 0;
y = 0;
}
public void paintComponent(Graphics g)
{
super.paintComponent(g);
if(newProblem) //when a new problem needs to be made, the variable needs to be true
{
if(makeOrder) //create random order of problems
{
while(i<15)
{
list1.add(new Integer(i));
i++;
}
Collections.shuffle(list1);
makeOrder = false;
}
integer++;
/*create problems randomly along with answer based on Math.Random
and if-else along with level #s*/
Image img1 = Toolkit.getDefaultToolkit().getImage(images[integer]);
g.drawImage(img1, 500, 500, this); //make sure to have an image if needed for the problem
question = questions[integer];
g.drawString(question, 500, 400);
answer = answers[integer];
wrongAnswer1 = wrongAnswers1[integer];
wrongAnswer2 = wrongAnswers2[integer];
wrongAnswer3 = wrongAnswers3[integer];
answerLocation = (int)(Math.random()*4); //set Location of answers on radiobuttons
if(answerLocation == 1)
{
answer1.setText(answer);
answer2.setText(wrongAnswer1);
answer3.setText(wrongAnswer3);
answer4.setText(wrongAnswer2);
}
else if(answerLocation == 2)
{
//different locations
}
else if(answerLocation == 3)
{
//different locations
}
else if(answerLocation == 4)
{
//different locations
}
}
g.drawString("Time: " + time, 900, 100);
//time is on upperleft; use drawString and time variable
g.drawString(problemNumber + " out of 10", 50, 50);
if(time == 0 || lives == 0) //if time or lives goes to zero, open GameOverScreen
panels.show(c, "Game Over Screen1");
if(wrongOrNot == 2)
{
g.setColor(Color.RED);
g.drawString("Incorrect",600,600);
}
else if(wrongOrNot == 3)
{
g.setColor(Color.GREEN);
g.drawString("Correct",600,600);
}
g.setColor(Color.BLACK);
if(problemNumber == 6) //try-catch block for when user completes levels
finished = true;
try //PrintWriter is used when 5 problems are finished
{
makesOutput = new PrintWriter("SaveFiles.txt");
lookForTwo = new Scanner("SaveFiles.txt");
}
catch(FileNotFoundException e)
{
System.out.println("Can't find file.");
System.exit(1);
}
while(lookForTwo.hasNext())
{
if(number.equals("2"))
thereIsTwo = true;
}
if(getOut)
{
panels.show(c, "Title Screen");
getOut = false;
}
if(finished && thereIsTwo == false)
makesOutput.println("2");
if(finished)
{
panels.show(c, "Level Complete");
finished = false;
}
makesOutput.close();
time--;
}
public void actionPerformed(ActionEvent e)
{
newProblem = false;
if(answer1.isSelected() && answer1.getText() == answer)
{
problemNumber++;
newProblem = true;
wrongOrNot = 3;
questions[integer] = "";
}
else if(answer2.isSelected() && answer2.getText() == answer)
{
//same as above
}
else if(answer3.isSelected() && answer3.getText() == answer)
{
//same as above
}
else if(answer4.isSelected() && answer4.getText() == answer)
{
//same as above
}
else
{
lives-=1;
wrongOrNot = 2;
}
if(restartButton.getModel().isPressed())
{
problemNumber = 1;
time = 60;
lives = 3;
newProblem = true;
}
else if(getOutButton.getModel().isPressed())
{
getOut = true;
}
repaint();
}
}
try //code is now from another panel that loads Level1
{
scanner = new Scanner(file);
}
catch(FileNotFoundException e)
{
System.out.println("Can't find file.");
System.exit(1);
}
while(scanner.hasNext())
{
if(word.equals("2"))
toLevel2 = true;
if(word.equals("3"))
toLevel3 = true;
}
scanner.close();
if(backToTitle)
{
panels.show(c, "Title Screen");
backToTitle = false;
}
if(lvl1ButtonPressed)
panels.show(c, "Level 1");