今天我们来说一下解决Win7下Jdeveloper（OAF）黑屏、卡顿、反应慢的方法：
    
    用文本编辑器打开 jdev.conf 文件
    
    C:\p5856648_R12_GENERIC\jdevbin\jdev\bin\jdev.conf
    
    找到下面内容
    # Disable Direct Draw, on some Windows 2000/XP base computers,
    # Direct Draw is cause excessive screen refreshes and slows down drawing.
    #AddVMOption    -Dsun.java2d.noddraw=true
    
    把最后一行前面的#号去掉！
    # Disable Direct Draw, on some Windows 2000/XP base computers,
    # Direct Draw is cause excessive screen refreshes and slows down drawing.
    AddVMOption    -Dsun.java2d.noddraw=true
    
    保存！