NetBeans中使用Java Swing创建简单GUI界面

这个示例演示了如何使用NetBeans 12.4创建一个基本的Java Swing GUI界面。通过拖放组件和设置属性，可以轻松设计界面并添加功能。

import javax.swing.*;

public class SimpleGUI extends javax.swing.JFrame {
    private JButton clickButton;
    private JLabel displayLabel;

    public SimpleGUI() {
        initComponents();
    }

    private void initComponents() {
        clickButton = new JButton();
        displayLabel = new JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("简单GUI界面");

        clickButton.setText("点击我！");
        clickButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                displayLabel.setText("你点击了按钮！");
            }
        });

        displayLabel.setText("欢迎使用简单GUI！");
        displayLabel.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);

        GroupLayout layout = new GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(clickButton)
                    .addContainerGap())
                .addGroup(layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(displayLabel)
                    .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(clickButton)
                    .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
                    .addComponent(displayLabel)
                    .addContainerGap())
        );

        pack();
    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new SimpleGUI().setVisible(true);
            }
        });
    }
}

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