Java每秒更改JLabel

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class JLabelUpdater extends JFrame {
    private JLabel label;

    public JLabelUpdater() {
        setTitle("JLabel Updater");
        setSize(300, 200);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);

        label = new JLabel("Initial Text", SwingConstants.CENTER);
        add(label);

        Timer timer = new Timer(1000, new ActionListener() {
            private int count = 0;

            @Override
            public void actionPerformed(ActionEvent e) {
                label.setText("Updated Text " + count++);
            }
        });
        timer.start();
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> new JLabelUpdater().setVisible(true));
    }
}

import javax.swing.*;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class BackgroundTaskExample {
    private JLabel label;
    private ExecutorService executor;

    public BackgroundTaskExample() {
        label = new JLabel("Initial Text");
        executor = Executors.newSingleThreadExecutor();

        Timer timer = new Timer(1000, e -> executor.submit(this::updateLabel));
        timer.start();
    }

    private void updateLabel() {
        // 模拟耗时操作
        try {
            Thread.sleep(500);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
        }
        SwingUtilities.invokeLater(() -> label.setText("Updated Text"));
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> new BackgroundTaskExample());
    }
}

SwingUtilities.invokeLater(() -> label.setText("Updated Text"));