Java 在actionPerformed中使用if（boolean==true）

我目前有一门ATM项目的课程。在我的actionPerformed中，我有4个按钮（二十、五十、一百和其他）。让我们坚持把钱存入账户。我想将支票存款和储蓄区别开来，但将它们放在同一个java文件中

在我的属性中，我有

 private triggerChecker checker;

这决定了用户是选择chequing（真布尔值）还是选择saving（假布尔值）

下面的代码将显示我的actionPerformed方法

 public void actionPerformed(ActionEvent e)
 {
  //Loop through the keypad array to see if any of the buttons were pressed 
   for (int i = 0; i < 10; i++)
   {
      if (e.getSource() == keypad[i])
      {
         //Edit the input display
         cardID = cardID + i;
         display.setText("\n\n\tPlease enter amount of money:" + "\n\t" +cardID);
      }
   }

   if(e.getSource() == keypad[11]){
        cardID = "";
        display.setText("\n\n\tPlease enter amount of money:" + "\n\t" +cardID);
  }

  if(checker.getCheck() == true){
  if (e.getSource() == twenty)
  {
      display.setText(feature.DepositTOC(20.0));
      display.setFont(new Font("Arial", Font.BOLD,18));
      display.setVisible(true);

  }

  if (e.getSource() == fifty)
  {
      display.setText(feature.DepositTOC(50.0));
      display.setFont(new Font("Arial", Font.BOLD,18));
      display.setVisible(true);

  }

  if (e.getSource() == hundred)
  {
      display.setText(account.toString());
      display.setFont(new Font("Arial", Font.BOLD,20));
      display.setVisible(true);
  }

  if (e.getSource() == other)
  {
      cardID = "";
      display.setText("\n\n\tPlease enter amount of money:" + "\n\t" +cardID);
  }
  if(e.getSource() == keypad[12]){
      double num = Double.parseDouble(cardID);
      display.setText(feature.DepositTOC(num));
      display.setFont(new Font("Arial", Font.BOLD,18));
      display.setVisible(true);

  }
  }
  if(checker.getCheck() == false){
      if (e.getSource() == twenty)
      {
          display.setText(feature.DepositTOS(20.0));
          display.setFont(new Font("Arial", Font.BOLD,18));
          display.setVisible(true);

      }

      if (e.getSource() == fifty)
      {
          display.setText(feature.DepositTOS(50.0));
          display.setFont(new Font("Arial", Font.BOLD,18));
          display.setVisible(true);

      }

      if (e.getSource() == hundred)
      {
          display.setText(account.toString());
          display.setFont(new Font("Arial", Font.BOLD,20));
          display.setVisible(true);
      }

      if (e.getSource() == other)
      {
          cardID = "";
          display.setText("\n\n\tPlease enter amount of money:" + "\n\t" +cardID);
      }
      if(e.getSource() == keypad[12]){
          double num = Double.parseDouble(cardID);
          display.setText(feature.DepositTOS(num));
          display.setFont(new Font("Arial", Font.BOLD,18));
          display.setVisible(true);

      }}
     }

---

没有理由不能在actionPerformed中访问或使用布尔值。唯一需要注意的是actionPerformed可以在用户不希望的时候被用户调用，因此确保布尔值始终处于初始化状态，用户可以执行您正在侦听的操作。

您无需编写

someBoolean==true

-

someBoolean

是等价的（类似地

！someBoolean

相当于

someBoolean==false

）如果（checker.getCheck（）==true）{使用if（checker.getCheck（）in actionPerformed“。你有这种“感觉”？你有错误吗？

public class triggerChecker {
private boolean checkW, checkD, checkWC, checkWS, checkDC, checkDS;

public triggerChecker(){
    checkW = false;
    checkD = false;
    checkWC = false;
    checkWS = false;
    checkDC = false;
    checkDS = false;
}

public void setCheckW(boolean s){
    checkW = s;
}
public void setCheckD(boolean s){
    checkD = s;
}
public void setCheckWC(boolean s){
    checkWC = s;
}
public void setCheckWS(boolean s){
    checkWS = s;
}
public void setCheckDC(boolean s){
    checkDC = s;
}
public void setCheckDS(boolean s){
    checkDS = s;
}


public boolean getCheckW(){
    return checkW;
}
public boolean getCheckD(){
    return checkD;
}
public boolean getCheckWC(){
    return checkWC;
}
public boolean getCheckWS(){
    return checkWS;
}
public boolean getCheckDC(){
    return checkDC;
}
public boolean getCheckDS(){
    return checkDS;
}

}