当UI界面需要读取网络内容等耗时操作时，可以使用这个方法。

添加按钮的点击事件：

btnRun.addMouseListener(new MouseAdapter() {			@Override			public void mouseClicked(MouseEvent e) {				webRead();			}		});

 添加webReader方法：

public void webRead() {		new SwingWorker
     
      (){			@Override			protected StringBuilder doInBackground() throws Exception {				URL url=new URL("https://home.firefoxchina.cn/?from=extra_start");				URLConnection connection=url.openConnection();				BufferedReader reader=new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));				String line;				StringBuilder builder =new StringBuilder();				while((line=reader.readLine())!=null) {//					publish(line);					builder.append(line).append("\n");				}				reader.close();				return builder;			}			@Override			protected void process(List
      
        chunks) {				for (String line:chunks) {					textArea.append(line);					textArea.append("\n");				}				super.process(chunks);			}			@Override			protected void done() {				try {					textArea.setText(get().toString());				} catch (InterruptedException e) {					// TODO Auto-generated catch block					e.printStackTrace();				} catch (ExecutionException e) {					// TODO Auto-generated catch block					e.printStackTrace();				}				super.done();			}					}.execute();	}