按钮上的关闭窗口点击

问题描述：

我正在使用Java Swing，并且想要关闭一个按钮单击窗口。我不知道使用actionlistener作为这样做的最好方式，但目前我有编译错误，所以它必须是不正确的。

这里我的代码：

public class assignment2 
    { 

     public static void main(String[] args){ 
      MyFrame f = new MyFrame(); //open the inital gui interface 
      f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
      f.setVisible(true); //set it visibile 
     } 
    } 

    //this is the initial gui screen, presenting user with options for which action they would like to take 
    //al actions for the gui are commenced here 
    class MyFrame extends JFrame{ 

     public MyFrame(){ 

      buttonPanel1 p = new buttonPanel1(); // add the buttons for this frame 
      add(p); 

      setSize(800,600); 
      setTitle("Travel Console"); 
      setLocationRelativeTo(null); 
     } 
    } 

    class buttonPanel1 extends JPanel{ 
     public buttonPanel1(){ 
      //create buttons 
      JButton addItem = new JButton("Add an Item"); 
      JButton deleteItem = new JButton("Delete an item"); 
      JButton listItem = new JButton("List items"); 
      JButton editItem = new JButton("Edit an item"); 
      JButton bookFlight = new JButton("Book a flight"); 
      JButton save = new JButton("Save data"); 
      JButton load = new JButton("Load data"); 
      JButton exit = new JButton("Exit"); 

      //set layout manager for button panel 
      setLayout(new GridLayout(8,1,1,5)); 

      //create buttons 
      add(addItem); 
      add(deleteItem); 
      add(listItem); 
      add(editItem); 
      add(bookFlight); 
      add(load); 
      add(save); 
      add(exit); 

      addItemListener addList = new addItemListener(); 
      addItem.addActionListener(addList); 
      exitListener exitList = new exitListener(); 
      exit.addActionListener(exitList); 
     } 

    } 

    //listener classes for the inital gui page. each button has its own actionlistener which launches the selected option 
    class addItemListener implements ActionListener{ 
     public void actionPerformed(ActionEvent event){ //launch add item 
      addItemFrame addItem = new addItemFrame(); 
      addItem.setDefaultCloseOperation(addItemFrame.DISPOSE_ON_CLOSE); 
      addItem.setVisible(true); 
     } 

    } 
class addItemFrame extends JFrame{ 
    public addItemFrame(){ 
     addItemButtonPanel b = new addItemButtonPanel(); // add the buttons for this frame 
     add(b); 

     setSize(800,500); 
     setTitle("Add an Item"); 
     setLocationRelativeTo(null); 
    } 
} 
//part of addItemFrame class 
class addItemButtonPanel extends JPanel{ 
    public addItemButtonPanel(){ 
     JLabel selectItem = new JLabel("Select which item you would like to add:"); 
     JButton newCustomer = new JButton("Customer"); 
     JButton newflight = new JButton("Flight"); 
     JButton newMovie = new JButton("Movie"); 
     JButton goBack = new JButton("Return to main menu"); 

     setLayout(new GridLayout(5,1,1,5)); 

     add(selectItem); 
     add(newCustomer); 
     add(newflight); 
     add(newMovie); 
     add(goBack); 

     goBackListener gbList = new goBackListener(); 
     goBack.addActionListener(gbList); 
    } 
} 

//listener classes for the addItemFrame 
class goBackListener implements ActionListener{ 
    public void actionPerformed(ActionEvent event){ 
     addItemFrame.dispose(); 
    } 

}

我遇到的问题是上市goBackListener最后一类，所以再次显示主菜单屏幕，有效地只是关闭当前窗口。我需要在addItemListener类中创建的addItemFrame的静态引用。但将其改为静态是一个无效的修饰符？

我该如何解决？

*“编译错误” *复制/粘贴它们的编辑的问题。 *“不知道如果使用actionlistener是最好的方法”*寻找一个'WindowListener'，或者调用'JFrame.setDefaultCloseOperation（JFrame.DISPOSE_ON_CLOSE）'。 –

顺便说一句，你应该坚持遵循Sun Java命名约定：类名始终以大写字母开头！ –

如果您已经在使用'JFrame.setDefaultCloseOperation（JFrame.DISPOSE_ON_CLOSE）'，只需调用'JFrame'上的'dispose'就会关闭它并退出JVM（只要所有非守护线程都已完成）; ） – MadProgrammer

答

试试这个

//listener classes for the addItemFrame 
class goBackListener implements ActionListener{ 
    private addItemFrame frame; 
    public goBackListener(addItemFrame frame){ 
     this.frame= frame; 
    } 
    public void actionPerformed(ActionEvent event){ 
     frame.dispose(); 
    } 
}

和发送的addItemFrame一个实例给它的构造

按钮上的关闭窗口点击

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