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我有一個值得信賴的小程序，而我掌握的OpenJDK和icedtea6-插件以下行爲：JNLP已經初始化，帶有icedtea6插件的NullPointerException？
Initializing JVM...
NOT IMPLEMENTED: virtual nsresult IcedTeaPluginInstance::Start()
Jar string: applets/MyApplet.jar
jars length: 1
JNLPRuntime already initialized
java.lang.NullPointerException
at net.sourceforge.jnlp.tools.JarSigner.verifyJars(JarSigner.java:192)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.verifyJars(JNLPClassLoader.java:626)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeResources(JNLPClassLoader.java:302)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:134)
at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:191)
at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:445)
at net.sourceforge.jnlp.Launcher.getApplet(Launcher.java:418)
at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:597)
netx: Initialization Error: Could not initialize applet. (net.sourceforge.jnlp.LaunchException Fatal: Initialization Error: A fatal error occurred while trying to verify jars.)
netx: Initialization Error: Could not initialize applet. (net.sourceforge.jnlp.LaunchException Fatal: Initialization Error: A fatal error occurred while trying to verify jars.)
太陽JVM和插件做工精細。可能會出現什麼問題？