因为需要一个线程跟踪立即重绘进度条区域才可以 举了个小例子，刚写的，单击窗体就有0－100的动态显示 import t.BorderLayout; import t.Tool; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JProgressBar; public class Test2 extends JFrame { private static final long serialVersionUID = 1L; private JPanel jContentPane = null; private JProgressBar jProgressBar = null; public Test2() { super(); initialize(); } private void initialize() { tSize(300, 200); tIconImage( tDefaultToolkit().getImage("C:/Documents and Settings/pig0301/My Documents/My Pictures/ g")); tContentPane(getJContentPane()); tTitle("JFrame"); } private JPanel getJContentPane() { if (jContentPane == null) { jContentPane = new JPanel(); tLayout(new BorderLayout()); d(getJProgressBar(), BorderLayout.CENTER); } return jContentPane; } private JProgressBar getJProgressBar() { if (jProgressBar == null) { jProgressBar = new JProgressBar(); tMinimum(0); tMaximum(100); dMouseListener(new t.event.MouseAdapter() { public void mouseClicked( t.event.MouseEvent e) { ProgressThread p = new ProgressThread(); for(int i = 0; i < 101; i++){ try{ eep(50); tValue(i); }catch(Exception ex){} } } }); } return jProgressBar; } class ProgressThread extends Thread{ private int value = 0; public void setValue(int i){ value = i; run(); } public void run(){ tValue(value); intImmediately( tX(), tY(), tWidth(), tHeight()); } } }