ANOTHER IndexOutofBounds例外

Question

好了，通過我的大部分問題（在Java中...今天...）

在這個GUI問卷得到的，我設法步我的問題，讓我的價值觀，而是爲了由於某種原因，它在循環的每次迭代期間都會拋出一個超出界限的異常......它實際上並沒有導致程序結束或其他任何事情，而是要求我翻閱問題並給出響應，我看到我的控制檯顯示出界限直到最後一個問題被詢問時，循環的每個計數都會出現錯誤。 如果我註釋掉我的calcPersonnelRisk（），它在索引計數器是列表大小時運行，它會在沒有任何錯誤的情況下運行。困惑，因爲該方法只是從我的答案中賦值給我的變量，而不明白爲什麼有這樣的代碼會搞砸它。作爲一名程序員，我仍然處於初級階段，並且仍然在發展我的高效調試能力......但我們首先感謝任何輸入。提前致謝！

public class ORMRiskCalculator extends JFrame{ 

private JButton yesButton, noButton, exitButton, enterButton; 
private JLabel message; 
private JTextField textField; 
private JFrame frmOrmRiskCalculator; 
private final ButtonGroup buttonGroup = new ButtonGroup(); 
private int questionIndex; 

private ArrayList<String> questions = new ArrayList<String>(); 
private ArrayList<Integer> responses = new ArrayList<Integer>(); 

/** 
* Launch the application. 
*/ 
public static void main(String[] args) { 

    EventQueue.invokeLater(new Runnable() { 
     public void run() { 
      try { 
       ORMRiskCalculator window = new ORMRiskCalculator(); 
       window.frmOrmRiskCalculator.setVisible(true); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
    }); 
} 

/** 
* Create the application. 
*/ 
public ORMRiskCalculator() { 
    initialize(); 
} 

/** 
* Initialize the contents of the frame. 
*/ 
private void initialize() { 
    frmOrmRiskCalculator = new JFrame(); 
    frmOrmRiskCalculator.getContentPane().setBackground(new Color(0, 102, 153)); 
    frmOrmRiskCalculator.setTitle("ORM Risk Calculator"); 
    frmOrmRiskCalculator.setBounds(100, 100, 650, 500); 
    frmOrmRiskCalculator.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    frmOrmRiskCalculator.getContentPane().setLayout(null); 

    message = new JLabel("Create a new ORM Report?"); 
    message.setVerticalAlignment(SwingConstants.CENTER); 
    message.setHorizontalAlignment(SwingConstants.CENTER); 
    message.setFont(new Font("Tahoma", Font.BOLD, 20)); 
    message.setBounds(10, 10, 614, 109); 
    frmOrmRiskCalculator.getContentPane().add(message); 


    yesButton = new JButton("YES"); 
    yesButton.setFont(new Font("Tahoma", Font.BOLD, 14)); 
    yesButton.setForeground(Color.BLACK); 
    yesButton.setBackground(Color.GREEN); 
    yesButton.setBounds(80, 240, 200, 50);  
    frmOrmRiskCalculator.getContentPane().add(yesButton); 
    yesButton.addActionListener(new ActionListener() { 
     public void actionPerformed(ActionEvent e) { 
      questions.clear(); 
      responses.clear(); 

      getAnswers(); 
     } 
    }); 

    noButton = new JButton("NO"); 
    noButton.setBackground(Color.RED); 
    noButton.setFont(new Font("Tahoma", Font.BOLD, 14)); 
    noButton.setBounds(80, 330, 200, 50); 
    frmOrmRiskCalculator.getContentPane().add(noButton); 
    noButton.addActionListener(new ActionListener() { 
     public void actionPerformed(ActionEvent e) { 
     System.exit(0); 
     } 
    }); 

    textField = new JTextField(); 
    textField.setBounds(350, 275, 100, 50); 
    textField.setFont(new Font("Tahoma", Font.BOLD, 20)); 
    frmOrmRiskCalculator.getContentPane().add(textField); 
    textField.setColumns(10); 

    enterButton = new JButton("Enter"); 
    enterButton.setFont(new Font("Tahoma", Font.BOLD, 14)); 
    enterButton.setBounds(450, 275, 100, 50); 
    buttonGroup.add(enterButton); 
    frmOrmRiskCalculator.getContentPane().add(enterButton); 

    exitButton = new JButton("EXIT"); 
    exitButton.setBackground(Color.GRAY); 
    exitButton.setFont(new Font("Tahoma", Font.BOLD | Font.ITALIC, 18)); 
    exitButton.setBounds(80, 425, 470, 25); 
    frmOrmRiskCalculator.getContentPane().add(exitButton); 
    exitButton.addActionListener(new ActionListener() { 
     public void actionPerformed(ActionEvent e) { 
     shutDown(); 
     } 
    }); 
} 

private void setupQuestions(){ 
    questions.add("How many mission personnel had less than normal rest?"); 
    questions.add("How many mission personnel have an illness that may impact the mission?"); 
    questions.add("How many mission personnel are taking medications that may affect duty?"); 
    questions.add("How many mission personnel are scheduled to work longer than ten hours?"); 
    questions.add("How many mission personnel worked greater than ten hours on the previous shift?"); 
    questions.add("How many mission personnel swapped from night shift to day shift in the last 24 hrs?"); 
    questions.add("How many mission personnel are still in a training status or are a TEMP RCOs)?"); 
    questions.add("How many mission personnel are on duty during flight operations?"); 
} 
protected void getAnswers() { 
    setupQuestions(); 
    yesButton.setVisible(false); 
    noButton.setVisible(false); 
    message.setFont(new Font("Tahoma", Font.BOLD, 14)); 
    message.setText(questions.get(questionIndex++)); 
    enterButton.addActionListener(new ActionListener(){ 
     public void actionPerformed(ActionEvent e){ 
       int r= Integer.parseInt(textField.getText().trim()); 
       responses.add(r); 
       textField.setText(""); 
       if(questionIndex < questions.size()) 
       message.setText(questions.get(questionIndex++)); 
       else {message.setText("Done!"); calcPersonnelRisk();} 
       //do finishing stuff, move to the next method! 
     }}); 


}//end getAnswers 
protected void calcPersonnelRisk() { 

    int lessThanNormalRest, illness, meds, lengthOfDay, previousDutyDay, crewExperience, 
    shiftSwap, minManning; 
    //probably better in this instance to use TreeMaps for future iterations of this program? 
    lessThanNormalRest = responses.get(0); 
    illness = responses.get(1); 
    meds = responses.get(2); 
    lengthOfDay=responses.get(3); 
    previousDutyDay=responses.get(4); 
    shiftSwap=responses.get(5); 
    crewExperience = responses.get(6); 
    if(responses.get(7) >= 4)minManning = 2; 
    else minManning=0; 

    PersonnelRisk pRisk = new PersonnelRisk(lessThanNormalRest,illness,meds,lengthOfDay, 
      previousDutyDay,crewExperience,shiftSwap,minManning); 
    message.setFont(new Font("Tahoma", Font.BOLD, 20)); 
    message.setText("Your calculated personnel Risk is: "+pRisk.calcRisk() 
      +"\n\t Run again?"); 
    yesButton.setVisible(true); 
    noButton.setVisible(true); 


} 

private void shutDown(){ 
    message.setFont(new Font("Tahoma", Font.BOLD, 26)); 
    message.setText("Good bye!");//why doesn't this work? Sleeps, and closes, 
    //doesn't show my text message. 

    try { 
     Thread.sleep(1000);//also tried a wait(), notify(), but it seemed like the notify never allowed it to get to the exit command 
    } catch(InterruptedException ex) { 
     Thread.currentThread().interrupt(); 
    } 
    System.exit(0); 
}//end shutDown method 
}//endORMRiskCalculator 

Answer 1

對不起，我給了它一個快速瀏覽一下，但如果我明白髮生了什麼是按鈕觸發動作女巫清除問題列表和電話的getAnswer女巫嘗試從問題列表中，這樣的值...