在 Java 中创建图像图标

package delftstack;

import java.awt.Container;
import javax.swing.GroupLayout;
import java.awt.EventQueue;
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.ImageIcon;
import javax.swing.JComponent;
import java.awt.Graphics;
import javax.swing.JPanel;

class DrawingPanel extends JPanel {

    private ImageIcon img_icon;

    public DrawingPanel() {
        load_Image();
        init_Panel();
    }

    private void load_Image() {
        img_icon = new ImageIcon("delftstack.jpg");
    }

    private void init_Panel() {
        int img_width = img_icon.getIconWidth();
        int img_height = img_icon.getIconHeight();
        setPreferredSize(new Dimension(img_width, img_height));
    }

    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        img_icon.paintIcon(this, g, 0, 0);
    }
}

public class Image_Icon extends JFrame {

    public Image_Icon() {
        init_User_Inter();
    }

    private void init_User_Inter() {
        DrawingPanel drawing1 = new DrawingPanel();

        createLayout(drawing1);

        setTitle("Image Icon");
        setLocationRelativeTo(null);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    private void createLayout(JComponent... argument) {
        Container demo_pane = getContentPane();
        GroupLayout demo_gl = new GroupLayout(demo_pane);
        demo_pane.setLayout(demo_gl);

        demo_gl.setHorizontalGroup(demo_gl.createSequentialGroup()
                .addComponent(argument[0])
        );

        demo_gl.setVerticalGroup(demo_gl.createParallelGroup()
                .addComponent(argument[0])
        );

        pack();
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(() -> {
            JFrame demo_img = new Image_Icon();
            demo_img.setVisible(true);
        });
    }
}

package delftstack;

import java.awt.Container;
import javax.swing.GroupLayout;
import java.awt.EventQueue;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.ImageIcon;
import static javax.swing.JFrame.EXIT_ON_CLOSE;

public class Custom_Image_Icon extends JFrame {

    public Custom_Image_Icon() {
        init_User_Interface();
    }

    private void init_User_Interface() {
        ImageIcon Facebook_Icon = new ImageIcon("facebook.png");
        ImageIcon Twitter_Icon = new ImageIcon("twitter.png");
        ImageIcon Email_Icon = new ImageIcon("email.png");

        JButton Facebook_Btn = new JButton(Facebook_Icon);
        JButton Twitter_Btn = new JButton(Twitter_Icon);
        JButton Email_Btn = new JButton(Email_Icon);

        createLayout(Facebook_Btn, Twitter_Btn, Email_Btn);

        setTitle("Image Icons on Buttons");
        setLocationRelativeTo(null);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
    }

    private void createLayout(JComponent... argument) {
        Container Btn_Pane = getContentPane();
        GroupLayout demo_graphic = new GroupLayout(Btn_Pane);
        Btn_Pane.setLayout(demo_graphic);

        demo_graphic.setAutoCreateContainerGaps(true);
        demo_graphic.setAutoCreateGaps(true);

        demo_graphic.setHorizontalGroup(demo_graphic.createSequentialGroup()
                .addComponent(argument[0])
                .addComponent(argument[1])
                .addComponent(argument[2])
        );

        demo_graphic.setVerticalGroup(demo_graphic.createParallelGroup()
                .addComponent(argument[0])
                .addComponent(argument[1])
                .addComponent(argument[2])
        );

        demo_graphic.linkSize(argument[0], argument[1], argument[2]);
        pack();
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(() -> {
            Custom_Image_Icon Btn_Icons = new Custom_Image_Icon();
            Btn_Icons.setVisible(true);
        });
    }
}