Java Swing-在GridBagLayout中的单行底部边框下添加标签

Question

我希望标签酒店管理系统版权 2016出现在底部的MatteBorder下方并且也居中。我尝试了copyrightL.setVerticalAlignment(JLabel.BOTTOM);，但它似乎无法运作。

这是我的代码：

 public class Admin_hs extends JFrame {

JButton bking_btn= new JButton("Bookings");
JButton fd_btn= new JButton("Financial Data");
JButton ctm_btn= new JButton("Customers");
JButton room_btn= new JButton("Rooms");
JButton adc_btn= new JButton("Additional Costs");
JButton endb_btn= new JButton("Ending Bookings");

//Images
JLabel bking_img= new JLabel();
JLabel fd_img= new JLabel();
JLabel ctm_img= new JLabel();
JLabel room_img= new JLabel();
JLabel adc_img= new JLabel();
JLabel endb_img= new JLabel();
JLabel copyrightL = new JLabel("Hotel Management System \u00a9 2016");

///Panels

JPanel pnl1= new JPanel();
JPanel pnl= new JPanel((new FlowLayout(FlowLayout.LEFT)));

///Constructors

public Admin_hs(){
    this.setTitle("Welcome Admin!");
    this.setLayout(new GridBagLayout());

    ///Setting a layout

    pnl1.setLayout(new GridBagLayout());
    GridBagConstraints gbc = new GridBagConstraints();
    gbc.gridwidth= GridBagConstraints.REMAINDER;
    gbc.fill= gbc.HORIZONTAL;

     gbc.weightx = 1;                       // ADD THIS LINE so it uses all the existing window size in x direction
     pnl1.add(pnl);                         // ADD THIS LINE


    pnl.setLayout(new GridBagLayout());

    GridBagConstraints gc= new GridBagConstraints();

    ///First Column of Grid


    gc.insets = new Insets(6, 6, 6, 6);
    gc.anchor = GridBagConstraints.WEST;
    gc.weightx = 0.5;
    gc.weighty = 0.5;

    gc.gridx = 0;
    gc.gridy = 0;

    pnl.add(bking_btn, gc);

    gc.gridx = 0;
    gc.gridy = 1;
    pnl.add(fd_btn, gc);

    gc.gridx = 0;
    gc.gridy = 2;
    pnl.add(ctm_btn, gc);

    gc.gridx = 0;
    gc.gridy = 3;
    pnl.add(room_btn, gc);

    gc.gridx = 0;
    gc.gridy = 4;
    pnl.add(adc_btn, gc);

    gc.gridx = 0;
    gc.gridy = 5;
    pnl.add(endb_btn, gc);

    gc.gridx = 0;
    gc.gridy = 8;
    pnl.add(copyrightL, gc);


    /////second column of grid



    gc.anchor = GridBagConstraints.WEST;
    gc.gridx = 1;
    gc.gridy = 0;
    bking_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/booking.jpg"));
    pnl.add(bking_img, gc);

    gc.gridx = 1;
    gc.gridy = 1;
    fd_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/fd.jpg"));
    pnl.add(fd_img, gc);

    gc.gridx = 1;
    gc.gridy = 2;
    ctm_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/guest.jpg"));
    pnl.add(ctm_img, gc);

    gc.gridx = 1;
    gc.gridy = 3;
    room_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/room.jpg"));
    pnl.add(room_img, gc);

    gc.gridx = 1;
    gc.gridy = 4;
    adc_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/adc.jpg"));
    pnl.add(adc_img, gc);

    gc.gridx = 1;
    gc.gridy = 5;
    endb_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/endb.png"));
    pnl.add(endb_img, gc);

    //copyrightL.setHorizontalAlignment(JLabel.CENTER);
    //copyrightL.setVerticalAlignment(JLabel.BOTTOM);
    //pnl.add(copyrightL);

    pnl1.setBorder(BorderFactory.createMatteBorder(0, 0, 1, 0, Color.BLACK));

     this.add(pnl1,gbc); 


     }

}

主要课程

public class Admin_main {

public static void main(String[] args) {

    Admin_hs adm= new Admin_hs();

    adm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    adm.pack();
    adm.setVisible(true);
    adm.setSize(780,520);

    }

}

以下是目前的情况：

修改

以这种方式对我有用：

public class Admin_hs extends JFrame {

JButton bking_btn= new JButton("Bookings");
JButton fd_btn= new JButton("Financial Data");
JButton ctm_btn= new JButton("Customers");
JButton room_btn= new JButton("Rooms");
JButton adc_btn= new JButton("Additional Costs");
JButton endb_btn= new JButton("Ending Bookings");

//Images
JLabel bking_img= new JLabel();
JLabel fd_img= new JLabel();
JLabel ctm_img= new JLabel();
JLabel room_img= new JLabel();
JLabel adc_img= new JLabel();
JLabel endb_img= new JLabel();
JLabel copyrightL = new JLabel("Hotel Management System \u00a9 2016");


///Panels

JPanel pnl1= new JPanel();
JPanel pnl2= new JPanel(new GridBagLayout());

///Constructors

public Admin_hs(){
    this.setTitle("Welcome Admin!");
    this.setLayout(new GridBagLayout());

    ///Setting a layout



    pnl1.setLayout(new GridBagLayout());
    GridBagConstraints gbc = new GridBagConstraints();
    gbc.fill= gbc.HORIZONTAL;


    GridBagConstraints gc= new GridBagConstraints();

    ///First Column of Grid


    gc.insets = new Insets(6, 6, 6, 6);
    gc.anchor = GridBagConstraints.WEST;
    gc.weightx = 0.5;
    gc.weighty = 0.5;

    gc.gridx = 0;
    gc.gridy = 0;

    pnl1.add(bking_btn, gc);


    gc.gridx = 0;
    gc.gridy = 1;
    pnl1.add(fd_btn, gc);

    gc.gridx = 0;
    gc.gridy = 2;
    pnl1.add(ctm_btn, gc);

    gc.gridx = 0;
    gc.gridy = 3;
    pnl1.add(room_btn, gc);

    gc.gridx = 0;
    gc.gridy = 4;
    pnl1.add(adc_btn, gc);

    gc.gridx = 0;
    gc.gridy = 5;
    pnl1.add(endb_btn, gc);

    gc.gridx = 0;
    gc.gridy = 8;
    pnl1.add(copyrightL, gc);


    /////second column of grid



    gc.anchor = GridBagConstraints.WEST;
    gc.gridx = 1;
    gc.gridy = 0;
    bking_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/booking.jpg"));
    pnl1.add(bking_img, gc);

    gc.gridx = 1;
    gc.gridy = 1;
    fd_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/fd.jpg"));
    pnl1.add(fd_img, gc);

    gc.gridx = 1;
    gc.gridy = 2;
    ctm_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/guest.jpg"));
    pnl1.add(ctm_img, gc);

    gc.gridx = 1;
    gc.gridy = 3;
    room_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/room.jpg"));
    pnl1.add(room_img, gc);

    gc.gridx = 1;
    gc.gridy = 4;
    adc_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/adc.jpg"));
    pnl1.add(adc_img, gc);

    gc.gridx = 1;
    gc.gridy = 5;
    endb_img.setIcon(new ImageIcon("C:/Users/Diksha/Desktop/OOSD Assignment/icons/60-60/endb.png"));
    pnl1.add(endb_img, gc);


    pnl1.setBorder(BorderFactory.createMatteBorder(0, 0, 1, 0, Color.BLACK));

     gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.gridwidth = 2;
        pnl2.add(copyrightL, gbc);

        gbc.gridwidth = 1;
        gbc.weightx = 1.0;
        gbc.gridx = 0;
        gbc.gridy = 0;
        add(pnl1, gbc);

        gbc.gridx = 0;
        gbc.gridy = 1;
        add(pnl2, gbc);

    }

}

以下是现在的样子：

按钮以某种方式向左移动。这对我来说很好，因为我出于某种原因不得不将它们移到左边。如何才能将相应的图像显示在左侧？我的意思是，如何让图像更接近左边的按钮？

Answer 1

我认为最简单的方法是使用与此类似的代码

import javax.swing.*;
import java.awt.*;

public class Test extends JFrame {
    private JPanel testPanel = new JPanel(new GridBagLayout()), testPanel2 = new JPanel(new GridBagLayout());
    private GridBagConstraints c = new GridBagConstraints();
    private JLabel label1 = new JLabel("Something"), label2 = new JLabel("Something Else");

    Test() {
        super("Example Frame");
        setLayout(new GridBagLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        buildGUI();

        c.weightx = 1.0;
        c.gridx = 0;
        c.gridy = 0;
        add(testPanel, c);

        c.gridx = 0;
        c.gridy = 1;
        add(testPanel2, c);

        pack();
        setVisible(true);
    }

    private void buildGUI() {
        c.fill = GridBagConstraints.HORIZONTAL;
        c.gridx = 0;
        c.gridy = 0;
        testPanel.add(label1, c);

        testPanel.setBorder(BorderFactory.createMatteBorder(0, 0, 1, 0, Color.BLACK));

        c.gridx = 0;
        c.gridy = 0;
        testPanel2.add(label2, c);
    }

    public static void main(String[] args) {
        new Test();
    }
}

在此代码中，有两个JPanel，每个都有一个JLabel。第一个面板底部有一个边框，第二个面板放在下面。您可以通过在JFrame上设置布局来实现此目的。您可以采用这种方法来处理代码。

使用您的代码，它看起来像这样。

<强> Admin_main

import javax.swing.*;

public class Admin_main {
    public static void main(String[] args) {

        Admin_hs adm= new Admin_hs();

        adm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        adm.pack();
        adm.setVisible(true);
    }
}

<强> Admin_hs

import javax.swing.*;
import java.awt.*;

public class Admin_hs extends JFrame {
    JButton bking_btn= new JButton("Bookings");
    JButton fd_btn= new JButton("Financial Data");
    JButton ctm_btn= new JButton("Customers");
    JButton room_btn= new JButton("Rooms");
    JButton adc_btn= new JButton("Additional Costs");
    JButton endb_btn= new JButton("Ending Bookings");

    //Images
    JLabel bking_img= new JLabel();
    JLabel fd_img= new JLabel();
    JLabel ctm_img= new JLabel();
    JLabel room_img= new JLabel();
    JLabel adc_img= new JLabel();
    JLabel endb_img= new JLabel();
    JLabel copyrightL = new JLabel("Hotel Management System \u00a9 2016");

    ///Panels

    JPanel pnl1 = new JPanel(new GridBagLayout()), pnl2 = new JPanel(new GridBagLayout());

    ///Constructors

    public Admin_hs(){
        setTitle("Welcome Admin!");
        setLayout(new GridBagLayout());

        ///Setting a layout

        pnl1.setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.fill= GridBagConstraints.HORIZONTAL;

        gbc.insets = new Insets(6, 6, 6, 6);
        gbc.weightx = 1;
        gbc.weighty = 1;
        gbc.gridx = 0;
        gbc.gridy = 0;

        pnl1.add(bking_btn, gbc);

        gbc.gridx = 0;
        gbc.gridy = 1;
        pnl1.add(fd_btn, gbc);

        gbc.gridx = 0;
        gbc.gridy = 2;
        pnl1.add(ctm_btn, gbc);

        gbc.gridx = 0;
        gbc.gridy = 3;
        pnl1.add(room_btn, gbc);

        gbc.gridx = 0;
        gbc.gridy = 4;
        pnl1.add(adc_btn, gbc);

        gbc.gridx = 0;
        gbc.gridy = 5;
        pnl1.add(endb_btn, gbc);


        /////second column of grid
        gbc.weightx = 0;
        gbc.fill= GridBagConstraints.BOTH;

        ImageIcon icon = new ImageIcon("Smiley.gif");
        Image image2 = icon.getImage().getScaledInstance(50, 50, 0);
        ImageIcon icon2 = new ImageIcon(image2);

        gbc.gridx = 1;
        gbc.gridy = 0;
        bking_img.setIcon(icon2);
        pnl1.add(bking_img, gbc);

        gbc.gridx = 1;
        gbc.gridy = 1;
        fd_img.setIcon(icon2);
        pnl1.add(fd_img, gbc);

        gbc.gridx = 1;
        gbc.gridy = 2;
        ctm_img.setIcon(icon2);
        pnl1.add(ctm_img, gbc);

        gbc.gridx = 1;
        gbc.gridy = 3;
        room_img.setIcon(icon2);
        pnl1.add(room_img, gbc);

        gbc.gridx = 1;
        gbc.gridy = 4;
        adc_img.setIcon(icon2);
        pnl1.add(adc_img, gbc);

        gbc.gridx = 1;
        gbc.gridy = 5;
        endb_img.setIcon(icon2);
        pnl1.add(endb_img, gbc);

        pnl1.setBorder(BorderFactory.createMatteBorder(0, 0, 1, 0, Color.BLACK));

        gbc.insets = new Insets(0, 0, 0, 0);

        gbc.gridwidth = 1;
        gbc.weightx = 1.0;
        gbc.gridx = 0;
        gbc.gridy = 0;
        add(pnl1, gbc);

        gbc.fill= GridBagConstraints.HORIZONTAL;

        gbc.weightx = 0;
        gbc.weighty = 0;
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.gridwidth = 2;
        pnl2.add(copyrightL, gbc);

        gbc.weightx = 0;
        gbc.gridx = 0;
        gbc.gridy = 1;
        add(pnl2, gbc);
    }
}

这会产生这个