Java/Swing打印子线程中的文本

import javax.swing.*;

public class PrintThread extends Thread {
    private JTextArea textArea;

    public PrintThread(JTextArea textArea) {
        this.textArea = textArea;
    }

    @Override
    public void run() {
        // 在子线程中打印文本
        for (int i = 0; i < 10; i++) {
            textArea.append("Printing text from sub-thread: " + i + "\n");
        }
    }

    public static void main(String[] args) {
        // 创建主线程中的GUI界面
        JFrame frame = new JFrame("Swing Thread Example");
        JTextArea textArea = new JTextArea();
        frame.getContentPane().add(new JScrollPane(textArea));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);
        frame.setVisible(true);

        // 创建子线程并启动
        PrintThread printThread = new PrintThread(textArea);
        printThread.start();
    }
}