Question

我已经构建了一个基于Swing的GUI，它可以成功构建。但是在跑步之后，它只会显示一个空白的白框，没有任何文字，按钮就可以了。

我已经检查过将GUI元素添加到面板（myPanel.add(bTest, "Card1");）。 $$$setupUI$$$();也应该在构造函数之后执行。

代码：

package voc;

import javax.swing.*;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class GUI extends JFrame {
    private JPanel myPanel;
    private JButton bTest;
    private JTextArea tEnterTranslation;

    public GUI() {

        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setVisible(true);
        bTest.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                super.mouseClicked(e);
            }
        });
    }

    public static void create() {
        GUI gui = new GUI();
    }


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


    {
// GUI initializer generated by IntelliJ IDEA GUI Designer
// >>> IMPORTANT!! <<<
// DO NOT EDIT OR ADD ANY CODE HERE!
        $$$setupUI$$$();
    }

    /**
     * Method generated by IntelliJ IDEA GUI Designer
     * >>> IMPORTANT!! <<<
     * DO NOT edit this method OR call it in your code!
     *
     * @noinspection ALL
     */
    private void $$$setupUI$$$() {
        myPanel = new JPanel();
        myPanel.setLayout(new CardLayout(0, 0));
        myPanel.setMaximumSize(new Dimension(500, 500));
        myPanel.setMinimumSize(new Dimension(500, 500));
        myPanel.setPreferredSize(new Dimension(500, 500));
        myPanel.setBorder(BorderFactory.createTitledBorder(null, "voc", TitledBorder.DEFAULT_JUSTIFICATION, TitledBorder.DEFAULT_POSITION, new Font(myPanel.getFont().getName(), myPanel.getFont().getStyle(), myPanel.getFont().getSize()), new Color(-4497096)));
        bTest = new JButton();
        bTest.setMinimumSize(new Dimension(10, 20));
        bTest.setText("Button");
        myPanel.add(bTest, "Card1");
        tEnterTranslation = new JTextArea();
        tEnterTranslation.setMinimumSize(new Dimension(20, 15));
        tEnterTranslation.setPreferredSize(new Dimension(20, 15));
        tEnterTranslation.setText("");
        myPanel.add(tEnterTranslation, "Card2");
    }

    /**
     * @noinspection ALL
     */
    public JComponent $$$getRootComponent$$$() {
        return myPanel;
    }
}

Answer 1

您忘了将JPanel添加到JFrame的{{1}}

contentPane()

加成

如果我是你，我也会使用public GUI() { this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.getContentPane().add(myPanel); <--------------------------------- HERE this.setVisible(true); bTest.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { super.mouseClicked(e); } }); }，因为您的JFrame#setSize(Dimension)现在会以最小尺寸显示。

Java Swing GUI应用程序完全空白，根本没有内容，而按钮则添加到面板中

1 个答案:

加成