关于SWT线程异常的有关问题_J2SE

关于SWT线程错误的问题
我这里做了一个用swt镶嵌url连接地址的小程序，但是不知道为什么偶尔在打开新窗口时会报错，并且打不开新窗口，请高手来帮我看看代码。

Java code

public Window(final Display display) {        shell = new Shell(display);        display.asyncExec(new Runnable() {            public void run() {                Shell shellBrowser = new Shell(display);                shellBrowser.setText("技术监督服务平台");                                shellBrowser.setLocation(Display.getCurrent().getClientArea().width / 2 - shellBrowser.getShell().getSize().x/2, Display.getCurrent()                         .getClientArea().height / 2 - shellBrowser.getSize().y/2);                shellBrowser.setMaximized(true);                shellBrowser.setLayout(new FillLayout());                Browser browser = new Browser(shellBrowser, SWT.NONE);                BrowserTest1.initialize(display, browser);                shellBrowser.open();                browser.setUrl("http://localhost:8089/tssp/index.jsp?security=madf823sdfasd09213");                while (!shellBrowser.isDisposed()) {                    if (!display.readAndDispatch())                        display.sleep();                }                display.dispose();            }        });                while (!shell.isDisposed()) {            if (!display.readAndDispatch()) {                display.sleep();            }        }    }

错误代码

Java code

Caused by: org.eclipse.swt.SWTException: Failed to execute runnable (org.eclipse.swt.SWTException: Widget is disposed)    at org.eclipse.swt.SWT.error(Unknown Source)    at org.eclipse.swt.SWT.error(Unknown Source)    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Unknown Source)    at org.eclipse.swt.widgets.Display.runAsyncMessages(Unknown Source)    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)    at com.sihan.epis.client.Window$1.run(Window.java:35)    at org.eclipse.swt.widgets.RunnableLock.run(Unknown Source)    ... 5 moreCaused by: org.eclipse.swt.SWTException: Widget is disposed    at org.eclipse.swt.SWT.error(Unknown Source)    at org.eclipse.swt.SWT.error(Unknown Source)    at org.eclipse.swt.SWT.error(Unknown Source)    at org.eclipse.swt.widgets.Widget.error(Unknown Source)    at org.eclipse.swt.widgets.Widget.checkWidget(Unknown Source)    at org.eclipse.swt.browser.Browser.checkWidget(Unknown Source)    at org.eclipse.swt.browser.Browser.getUrl(Unknown Source)    at com.sihan.epis.client.BrowserTest1$2$1.run(BrowserTest1.java:64)    at org.eclipse.swt.widgets.RunnableLock.run(Unknown Source)    ... 10 more

------解决方案--------------------
不知道你要搞什么，为什么外面有个shell了，又new了一个。
这个也不是线程错误，你里面把display给dispose了，这个就是错误原因。

------解决方案--------------------
你的第一个shell还没有open操作就
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
这怎么会打得开？