java applet报错：请帮忙。

ifmx

Java(TM) Plug-in: 版本 1.4.2_02
使用 JRE 版本 1.4.2_02 Java HotSpot(TM) Client VM
用户主目录 = C:\Documents and Settings\Administrator

代理配置：手动配置
.........................
java.lang.NullPointerException

        at sun.plugin.cache.CachedFileLoader.writeHeaders(Unknown Source)

        at sun.plugin.cache.CachedFileLoader.createCacheFiles(Unknown Source)

        at sun.plugin.cache.CachedFileLoader.access$200(Unknown Source)

        at sun.plugin.cache.CachedFileLoader$3.run(Unknown Source)

        at java.security.AccessController.doPrivileged(Native Method)

        at sun.plugin.cache.CachedFileLoader.download(Unknown Source)

        at sun.plugin.cache.CachedFileLoader.load(Unknown Source)

        at sun.plugin.cache.FileCache.get(Unknown Source)

        at sun.plugin.net.protocol.http.HttpURLConnection.connectWithCache(Unknown Source)

        at sun.plugin.net.protocol.http.HttpURLConnection.connect(Unknown Source)

        at sun.plugin.net.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

        at sun.plugin.net.protocol.http.HttpURLConnection.getHeaderField(Unknown Source)

        at java.net.HttpURLConnection.getResponseCode(Unknown Source)

        at sun.applet.AppletClassLoader.getBytes(Unknown Source)

        at sun.applet.AppletClassLoader.access$100(Unknown Source)

        at sun.applet.AppletClassLoader$1.run(Unknown Source)

        at java.security.AccessController.doPrivileged(Native Method)

        at sun.applet.AppletClassLoader.findClass(Unknown Source)

        at java.lang.ClassLoader.loadClass(Unknown Source)

        at sun.applet.AppletClassLoader.loadClass(Unknown Source)

        at java.lang.ClassLoader.loadClass(Unknown Source)

        at sun.applet.AppletClassLoader.loadCode(Unknown Source)

        at sun.applet.AppletPanel.createApplet(Unknown Source)

        at sun.plugin.AppletViewer.createApplet(Unknown Source)

        at sun.applet.AppletPanel.runLoader(Unknown Source)

        at sun.applet.AppletPanel.run(Unknown Source)

        at java.lang.Thread.run(Unknown Source)

猫小

Java(TM) Plug-in: 版本 1.4.2_02
使用 JRE 版本 1.4.2_02 Java HotSpot(TM) Client VM
用户主目录 = C:\Documents and Settings\Administrator

你都怎么手工配置的？

ifmx

代理：http=2x2.x0.x.10:808,https=2x2.x0.x.10::808,ftp=2x2.x0.x.10::2121,gopher=2x2.x0.x.10::808,socks=2x2.x0.x.10::1080
     代理覆盖：serva,local>;