[英]java.lang.reflect.InvocationTargetException?
我正在使用applet,當我使用Eclipse運行它時,我沒有任何問題,但是當我嘗試在Internet Explorer瀏覽器中加載applet時,它給了我這個錯誤:
java.lang.reflect.InvocationTargetException
我不知道該怎么辦,為什么不能與我的瀏覽器一起使用,也不能與Eclipse合作。
任何想法?
我使用appletviewer運行它,當我按下退出按鈕時出現了問題,必須退出游戲。 它實際上並沒有退出游戲……現在我更加迷失了。
- - - - - - - 堆棧跟蹤
C:\Course Technology\src>appletviewer TestJAlienHunt.html
Exception in thread "AWT-EventQueue-1" java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "exitVM.0")
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:366)
at java.security.AccessController.checkPermission(AccessController.java:555)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
at java.lang.SecurityManager.checkExit(SecurityManager.java:761)
at java.lang.Runtime.exit(Runtime.java:105)
at java.lang.System.exit(System.java:960)
at JAlienHunt.actionPerformed(JAlienHunt.java:97)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:703)
at java.awt.EventQueue.access$000(EventQueue.java:102)
at java.awt.EventQueue$3.run(EventQueue.java:662)
at java.awt.EventQueue$3.run(EventQueue.java:660)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:676)
at java.awt.EventQueue$4.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:673)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre ad.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
小程序不允許調用System.exit
。 畢竟,其他人創建的其他小程序可能正在使用該JVM。
通常,當用戶選擇關閉或離開頁面時,小程序“結束”(這將導致調用小程序的stop
方法)。 小程序無法在操作結束時自行決定。
從理論上講,您可以使小程序顯示一個空白矩形或類似的東西,但實際上,“退出”功能在小程序中根本沒有意義,因此一開始就不應該出現。
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