Question

如何通过action command和get action命令处理mousepressed事件来移动到各种JFrame。 Java swing代码：

//this code belongs to home jframe class

mntmPublicSector= new JMenuItem("Public Sector");
    mntmPublicSector.setActionCommand("public");
    mntmPublicSector.addMouseListener(new MouseAdapter() {
        @Override
        public void mousePressed(MouseEvent arg0) { int select=JOptionPane.showConfirmDialog(null,"if already user login","not user Register now",JOptionPane.YES_NO_OPTION);
            if(select==JOptionPane.YES_OPTION)
            {
                new Login_Page().setVisible(true);
                dispose();
            }
            else
            {
                new Student_Register().setVisible(true);
                dispose();
            } }});

mntmStateSector = new JMenuItem("State Sector");
    mntmStateSector.setActionCommand("state");
    mntmStateSector.addMouseListener(new MouseAdapter() {
        @Override
        public void mousePressed(MouseEvent arg0) { int select=JOptionPane.showConfirmDialog(null,"if already user login","not user Register now",JOptionPane.YES_NO_OPTION);
            if(select==JOptionPane.YES_OPTION)
            {
                new Login_Page().setVisible(true);
                dispose();
            }
            else
            {
                new Student_Register().setVisible(true);
                dispose();
            } }});



mntmApptitude = new JMenuItem("Apptitude");
     mntmApptitude.setActionCommand("app");
    mntmApptitude.addMouseListener(new MouseAdapter() {
        @Override
        public void mousePressed(MouseEvent arg0) { int select=JOptionPane.showConfirmDialog(null,"if already user login","not user Register now",JOptionPane.YES_NO_OPTION);
            if(select==JOptionPane.YES_OPTION)
            {
                new Login_Page().setVisible(true);
                dispose();
            }
            else
            {
                new Student_Register().setVisible(true);
                dispose();
            } }});



/*if i click with if i login,it needs to take to respective jframe [--App_Exam_Register_Panel()--or --State_exam_reg()-- or -- Public_exam_Reg()-- ] */

//this code belongs to login jframe class    
JButton btnLogin = new JButton(iim);
Home hm=new Home();
    btnLogin.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent arg0) {             
            String st=hm.mntmPublicSector.getActionCommand();
            String st1 =hm.mntmStateSector.getActionCommand();
            String aps=hm.mntmApptitude.getActionCommand();
            //String apss=hm.mntmApptitude
            if(st.equals("public"))
            {
                new Public_exam_Reg().setVisible(true);//jframe class
                dispose();
            }     //switch case
            else if(st1.equals("state"))
            {
                new State_exam_reg().setVisible(true);//jframe class
                dispose();
            }
            else if (aps.equals("Apptitude"))
            {
            new App_Exam_Register_Panel().setVisible(true);//jframe class
                dispose();
            }       }       });

Answer 1

不要在JMenuItem上使用MouseListener。

要处理菜单项的点击，您应该使用操作。

阅读How to Use Menus上Swing教程中的部分，了解更多信息和工作示例。

保留指向教程句柄的链接，以获取其他Swing基础知识的示例。

如何沿动作命令处理鼠标按下的事件

1 个答案: