使用线程更新jlabel的内容

class UpdateLabelThread extends Thread {
    private JLabel label;
    
    public UpdateLabelThread(JLabel label) {
        this.label = label;
    }
    
    @Override
    public void run() {
        while (true) {
            // 更新label的内容
            label.setText("新的内容");
            
            try {
                // 线程休眠一段时间
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

public class Main {
    public static void main(String[] args) {
        JFrame frame = new JFrame("更新JLabel的内容");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        JLabel label = new JLabel("初始内容");
        frame.getContentPane().add(label);
        
        frame.pack();
        frame.setVisible(true);
        
        UpdateLabelThread thread = new UpdateLabelThread(label);
        thread.start();
    }
}