以下是输出
java.stderr（相当于Java
控制台的一半-另一半是
java.stdout，在您的情况下为空）：
net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: Could not initialize applet. at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:604) at net.sourceforge.jnlp.Launcher.getApplet(Launcher.java:548) at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:729)Caused by: net.sourceforge.jnlp.LaunchException: Fatal: Launch Error: Jars not verified. at net.sourceforge.jnlp.runtime.JNLPClassLoader.checkTrustWithUser(JNLPClassLoader.java:467) at net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeResources(JNLPClassLoader.java:410) at net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:168) at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:249) at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:575) ... 2 moreCaused by: net.sourceforge.jnlp.LaunchException: Fatal: Launch Error: Jars not verified. at net.sourceforge.jnlp.runtime.JNLPClassLoader.checkTrustWithUser(JNLPClassLoader.java:467) at net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeResources(JNLPClassLoader.java:410) at net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:168) at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:249) at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:575) at net.sourceforge.jnlp.Launcher.getApplet(Launcher.java:548) at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:729)java.lang.NullPointerException at net.sourceforge.jnlp.NetxPanel.runLoader(NetxPanel.java:99) at sun.applet.AppletPanel.run(AppletPanel.java:380) at java.lang.Thread.run(Thread.java:636)java.lang.NullPointerException at sun.applet.AppletPanel.run(AppletPanel.java:430) at java.lang.Thread.run(Thread.java:636)java.lang.Exception: Applet initialization timeout at sun.applet.PluginAppletViewer.handleMessage(PluginAppletViewer.java:637) at sun.applet.PluginStreamHandler.handleMessage(PluginStreamHandler.java:270) at sun.applet.PluginMessageHandlerWorker.run(PluginMessageHandlerWorker.java:82)java.lang.RuntimeException: Failed to handle message: handle 60822154 for instance 2 at sun.applet.PluginAppletViewer.handleMessage(PluginAppletViewer.java:660) at sun.applet.PluginStreamHandler.handleMessage(PluginStreamHandler.java:270) at sun.applet.PluginMessageHandlerWorker.run(PluginMessageHandlerWorker.java:82)Caused by: java.lang.Exception: Applet initialization timeout at sun.applet.PluginAppletViewer.handleMessage(PluginAppletViewer.java:637) ... 2 more
因此，如果我在 对话框中按“取消”，则看起来甚至没有加载您的applet代码
。
我认为您在Java方面无能为力-也许使用其他签名过程或通过JNLP启动applet会有所帮助。或在IcedTea上提交错误报告。
为了演示这一点，我通过省略了小应用程序中的所有关键内容，创建了一个真正的简单小应用程序：
package org.pspre.eg.docload;import java.awt.FlowLayout;import javax.swing.*;public class Example extends JApplet { JLabel label; public void init() { System.out.println("init()"); SwingUtilities.invokeLater(new Runnable(){public void run() { label = new JLabel("inited."); getContentPane().setLayout(new FlowLayout()); getContentPane().add(label); }}); } @Override public void start() { System.out.println("start()"); label.setText("started."); } @Override public void stop() { System.out.println("stop()"); label.setText("stopped."); } @Override public void destroy() { System.out.println("destroy()"); label.setText("destroyed."); }}我对此进行了编译，并修改了HTML文件以使用它，它给出了完全相同的症状。
当用户按下“取消”时，IcedTea似乎已经重新定义了操作。为了公平，在对话框中的按钮是“运行”和“取消”，而不是“运行的所有权限”和“运行沙盒”。
（在Sun的对话框中，有相同的按钮，但实际上它们的含义不是所要求的。）
