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试图将JCheckBox用作JButton(Java Swing)

[英]Trying to use a JCheckBox as a JButton (Java Swing)

i'm trying to get a JDialog to "pop up" when i press a JCheckBox (if its not true). 当我按下JCheckBox时,我正试图让JDialog“弹出”(如果它不是真的)。 I want to use is as a button. 我想用的是按钮。 I hope i am posting this right, my first post here :) 我希望我发布这个权利,我的第一篇文章:)

I am getting a error that says i can't cast my JCheckBox to a JButton. 我收到一个错误,说我无法将JCheckBox强制转换为JButton。 Can you help me do this right? 你能帮我做到这一点吗?

package model; 包装模型;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;

public class FirstJDialog extends JDialog 
{
    private Controller controller;

    private HotelJDialog hotelJDialog;
    private PartnerJDialog partnerJDialog;

    private JLabel lblName, lblArrival, lblDeparture, lblLekture, lblHotel, lblPartner;
    private JTextField txfName, txfArrival, txfDeparture;
    private JCheckBox ckbLekture, ckbHotel, ckbPartner;

    public FirstJDialog()
    {
        this.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
        this.setTitle("Person informationer");
        this.setLayout(null);
        this.setSize(900, 650);
        this.setLocation(500, 200);
        this.setResizable(false);

        // Labels for TextField ######################################################################
        lblName = new JLabel("Navn:");
        this.add(lblName);
        this.lblName.setSize(100, 40);
        this.lblName.setLocation(25, 25);

        lblArrival = new JLabel("Ankomst:");
        this.add(lblArrival);
        this.lblArrival.setSize(100, 40);
        this.lblArrival.setLocation(25, 70);

        lblDeparture = new JLabel("Afgang:");
        this.add(lblDeparture);
        this.lblDeparture.setSize(100, 40);
        this.lblDeparture.setLocation(25, 115);

        // TextField ######################################################################
        txfName = new JTextField();
        this.add(txfName);
        this.txfName.setSize(200, 40);
        this.txfName.setLocation(180, 25);

        txfArrival = new JTextField();
        this.add(txfArrival);
        this.txfArrival.setSize(200, 40);
        this.txfArrival.setLocation(180, 70);

        txfDeparture = new JTextField();
        this.add(txfDeparture);
        this.txfDeparture.setSize(200, 40);
        this.txfDeparture.setLocation(180, 115);

        // CheckBox ######################################################################
        ckbLekture = new JCheckBox();
        this.add(ckbLekture);
        this.ckbLekture.setSize(25, 25);
        this.ckbLekture.setLocation(25, 200);

        ckbHotel = new JCheckBox();
        this.add(ckbHotel);
        this.ckbHotel.setSize(25, 25);
        this.ckbHotel.setLocation(25, 250);

        ckbPartner = new JCheckBox();
        this.add(ckbPartner);
        this.ckbPartner.setSize(25, 25);
        this.ckbPartner.setLocation(25, 300);

        // Labels for CheckBox ######################################################################
        lblLekture = new JLabel("Foredrag");
        this.add(lblLekture);
        this.lblLekture.setSize(100, 40);
        this.lblLekture.setLocation(125, 190);

        lblHotel = new JLabel("Hotel");
        this.add(lblHotel);
        this.lblHotel.setSize(100, 40);
        this.lblHotel.setLocation(125, 240);

        lblPartner = new JLabel("Ledsager");
        this.add(lblPartner);
        this.lblPartner.setSize(100, 40);
        this.lblPartner.setLocation(125, 290);

        // JDialogs ######################################################################
        hotelJDialog = new HotelJDialog();
        partnerJDialog = new PartnerJDialog();

        controller = new Controller();
        ckbHotel.addActionListener(controller);
    }

    private class Controller implements ActionListener
    {                   

        public void actionPerformed(ActionEvent e) 
        {
            JButton source = (JButton) e.getSource();
            JCheckBox sourxe = (JCheckBox) e.getSource();
            if(sourxe.equals(ckbHotel))
                hotelJDialog.setVisible(true);
        }   
    }

The error is a result of an attempt to cast JCheckBox to a JButton . 该错误是尝试将JCheckBox转换为JButton This cast is unnecessary, as you never register this listener with any JButton , only with ckbHotel which is JCheckBox . 这种ckbHotel是不必要的,因为你从来没有用任何JButton注册这个监听器,只有ckbHotelJCheckBox

In the given example, there is no need to cast, you can simply check the source: 在给定的示例中,不需要强制转换,您只需检查源:

if(ckbHotel.equals(e.getSource()))
    hotelJDialog.setVisible(true);

You can also register a different action listener for this checkbox. 您还可以为此复选框注册其他操作侦听器。 There is no need to have a single action listener to serve all the controls in the container, for example: 没有必要使用单个动作侦听器来提供容器中的所有控件,例如:

ckbHotel.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
        hotelJDialog.setVisible(true);
    }
});
 JButton source = (JButton) e.getSource(); 

this line give this error. 这一行给出了这个错误。 remove this ans add this 删除此ans添加此项

JCheckBox sourxe = (JCheckBox) e.getSource();
if(sourxe.isSelected())
      hotelJDialog.setVisible(true);

this is only show your dialog if sourxe is selected.. 如果选择了sourxe,这只显示你的对话框..

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