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我的java程序跑的比较慢所以就想加上进度条，但每次运行的时候都是先弹出进度条的框，直到另一个线程运行完才开始进度条的效果（ps，我的进度条只是为了在等程序运行的时候不那么无聊，两个线程根本没有交集)，然后现在好像就是在并行的时候，进度条的那个线程被阻塞了，直到另一个线程运行完才出结果以下是我的进度条的代码 public class ProgressBarDemo2 extends JPanel implements Runnable{ //JPanel Panel=new JPanel(); private JProgressBar progressBar; private JButton startButton; private JTextArea taskOutput; private Task task; public static ArrayList<String> keyword=new ArrayList<String>(); private Runnable run=null; public int progress; int k=0; int j=0; class Task extends SwingWorker<Void, Void> { //SwingWorker testWorker = new SwingWorker<Icon , Void>(){ /* * Main task. Executed in background thread. */ @Override public Void doInBackground() throws Exception{//////////////////////// Random random = new Random(); int progress = 0; //System.out.println("22222222"); //Initialize progress property. setProgress(0); //Sleep for at least one second to simulate "startup". try { Thread.sleep(1000 + random.nextInt(2000)); } catch (InterruptedException ignore) {} while (progress < 100) { //Sleep for up to one second. try { Thread.sleep(random.nextInt(1000)); } catch (InterruptedException ignore) {} //Make random progress. //System.out.println("11111111111111"); progress += random.nextInt(10); setProgress(Math.min(progress, 100)); } return null; } /* * Executed in event dispatch thread */ public void done() {///////////////////////////// Toolkit.getDefaultToolkit().beep(); setEnabled(true); taskOutput.append("Done!\n"); } } public ProgressBarDemo2() { super(new BorderLayout()); //Create the demo's UI. //startButton = new JButton("Start"); // startButton.setActionCommand("start"); // startButton.addActionListener(new startbutton()); addComponentListener(new button()); progressBar = new JProgressBar(0, 100); progressBar.setValue(0); //System.out.println("11111111111111"); //Call setStringPainted now so that the progress bar height //stays the same whether or not the string is shown. progressBar.setStringPainted(true); ///test run = new Runnable(){//实例化更新组件的线程 public void run() { } }; taskOutput = new JTextArea(8, 30); taskOutput.setMargin(new Insets(5,5,5,5)); taskOutput.setEditable(false); //System.out.println("22222222"); JPanel panel = new JPanel(); //panel.add(startButton); panel.add(progressBar); //System.out.println("333333"); add(panel, BorderLayout.PAGE_START); add(new JScrollPane(taskOutput), BorderLayout.CENTER); setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20)); } /** * Create the GUI and show it. As with all GUI code, this must run * on the event-dispatching thread. */ public void createAndShowGUI() { //Create and set up the window. JFrame frame = new JFrame("ProgressBarDemo2"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Create and set up the content pane. JComponent newContentPane = new ProgressBarDemo2(); newContentPane.setOpaque(true); //content panes must be opaque frame.setContentPane(newContentPane); //Display the window. frame.pack(); frame.setVisible(true); } /** * Invoked when the user presses the start button. */ class button implements ActionListener,ComponentListener{ public void actionPerformed(ActionEvent evt) { progressBar.setIndeterminate(true); setEnabled(false); //Instances of javax.swing.SwingWorker are not reusuable, so //we create new instances as needed. task = new Task(); task.addPropertyChangeListener(new property()); task.execute(); } @Override public void componentResized(ComponentEvent e) { // TODO Auto-generated method progressBar.setIndeterminate(true); setEnabled(false); //Instances of javax.swing.SwingWorker are not reusuable, so //we create new instances as needed. task = new Task(); task.addPropertyChangeListener(new property()); task.execute(); } @Override public void componentMoved(ComponentEvent e) { // TODO Auto-generated method stub } @Override public void componentShown(ComponentEvent e) { // TODO Auto-generated method stub } @Override public void componentHidden(ComponentEvent e) { // TODO Auto-generated method stub } } class property implements PropertyChangeListener{ @Override /** * Invoked when task's progress property changes. */ public void propertyChange(PropertyChangeEvent evt) { if ("progress" == evt.getPropertyName()) { int progress = (Integer) evt.getNewValue(); progressBar.setIndeterminate(false); progressBar.setValue(progress); if(k<=1){// taskOutput.append(String.format( "connect to ontology base.\n", progress)); k++; }else if(k>1&&k<=3){ taskOutput.append(String.format( "input rules into reasoner.\n", progress)); k++; }else if(k>3&&k<=5){ taskOutput.append(String.format( "find all keywords in ontology base.\n", progress)); k++; }else if(k>5&&k<=7){ taskOutput.append(String.format( "find keywords equal to %s.\n", keyword.get(j))); k++; }else if(k>7&&k<=9){ taskOutput.append(String.format( "find subject about %s and it's related words.\n", keyword.get(j))); k++; }else if(k>9&&k<=11){ taskOutput.append(String.format( "find subject about %s and it's related words.\n", keyword.get(j))); k++; if(j<1){ j++; } }else if(k>11&&k<=14){ taskOutput.append(String.format( "find keywords equal to %s.\n", keyword.get(j))); k++; System.out.println(j); }else if (k>14){ taskOutput.append(String.format( "find subject about %s from range of first resoning.\n", keyword.get(j))); k++; System.out.println(j); } }//if progress }//event }//class public static void main(String[] args) { //Schedule a job for the event-dispatching thread: //creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { ProgressBarDemo2 demo=new ProgressBarDemo2(); demo.createAndShowGUI(); } }); } @Override public void run() { // TODO Auto-generated method stub ProgressBarDemo2 demo=new ProgressBarDemo2(); demo.createAndShowGUI(); } } 然后线程调用 Thread demothread=new Thread(new ProgressBarDemo2()); demothread.start(); Thread threadsearch=new Thread(new inference.test()); threadsearch.start(); 跪谢跪谢

求问关于给java程序加进度条的问题