java中遇到的问题,谢谢

youtian001

我在打开一个frame窗口时,
[root@ut ch13]# java FrameTest1
Warning: Cannot convert string "<Key>Escape,_Key_Cancel" to type VirtualBinding
Warning: Cannot convert string "<Key>Home,_Key_Begin" to type VirtualBinding
Warning: Cannot convert string "<Key>F1,_Key_Help" to type VirtualBinding
Warning: Cannot convert string "Shift<Key>F10,_Key_Menu" to type VirtualBinding
Warning: Cannot convert string "<Key>F10,Shift_Key_Menu" to type VirtualBinding
Warning: Cannot convert string "<Key>KP_Enter,_Key_Execute" to type VirtualBinding
Warning: Cannot convert string "Alt<Key>Return,Alt_Key_KP_Enter" to type VirtualBinding

为什么会有这么多warning呢???
少装了什么东西吗??
谢谢

BoyFriend

源程序呢？