Java Swing 并发显示 JTextArea [英] Java Swing Concurrency display JTextArea

问题描述

我需要执行/显示从 Arraylist 到 JTextArea 的一系列事件，但是，每个事件在不同的时间执行.以下是我的目标的一个简单示例:

I need to execute/display a series of events from a Arraylist to a JTextArea, however, each Event gets execute with different time. Following is a quick example of my goal:

public void start(ActionEvent e)
 {
  SwingUtilities.invokeLater(new Runnable()
  {
   public void run()

   {
    jTextArea.append("Test" + "\n");
    try
    {
     Thread.sleep(3000);
    } catch (InterruptedException e1)
    {
     e1.printStackTrace();
    }
    jTextArea.append("Test1" + "\n");
   }
  });
 }

所以现在，在整个执行完成后，Test"和Test1"显示在 JTextArea 上.如何先显示Test"，然后在 3 秒后显示Test1"

So right now, "Test" and "Test1" display on JTextArea after whole execution is completed. How do I make "Test" display first, then 3 secs later, display "Test1"

先谢谢大家

推荐答案

invokeLater 安排 runnable 在事件调度线程上运行.你不应该在里面睡觉，否则你会饿死调度线程.尝试使用单独的工作线程:

invokeLater schedules the runnable to run on the Event Dispatch Thread. You shouldn't sleep within it or you will starve the dispatch thread. Try using a separate worker thread instead:

Thread worker = new Thread(new Runnable(){
    public void run(){
        jTextArea.append("Test" + "\n");
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e1) {
            e1.printStackTrace();
        }
        jTextArea.append("Test1" + "\n");

    }
});
worker.start();

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