11-04 14:06:33.385: W/dalvikvm(727): threadid=1: thread exiting with uncaught exception (group=0x4001d7d0)

11-04 14:06:33.389: E/AndroidRuntime(727): FATAL EXCEPTION: main
11-04 14:06:33.389: E/AndroidRuntime(727): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.game.gameview/com.game.gameview.SurfaceViewPractice}: java.lang.InstantiationException: com.game.gameview.SurfaceViewPractice
11-04 14:06:33.389: E/AndroidRuntime(727):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)
11-04 14:06:33.389: E/AndroidRuntime(727):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
11-04 14:06:33.389: E/AndroidRuntime(727):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
11-04 14:06:33.389: E/AndroidRuntime(727):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
11-04 14:06:33.389: E/AndroidRuntime(727):  at android.os.Handler.dispatchMessage(Handler.java:99)
11-04 14:06:33.389: E/AndroidRuntime(727):  at android.os.Looper.loop(Looper.java:123)
11-04 14:06:33.389: E/AndroidRuntime(727):  at android.app.ActivityThread.main(ActivityThread.java:4627)
11-04 14:06:33.389: E/AndroidRuntime(727):  at java.lang.reflect.Method.invokeNative(Native Method)
11-04 14:06:33.389: E/AndroidRuntime(727):  at java.lang.reflect.Method.invoke(Method.java:521)
11-04 14:06:33.389: E/AndroidRuntime(727):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
11-04 14:06:33.389: E/AndroidRuntime(727):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
11-04 14:06:33.389: E/AndroidRuntime(727):  at dalvik.system.NativeStart.main(Native Method)
11-04 14:06:33.389: E/AndroidRuntime(727): Caused by: java.lang.InstantiationException: com.game.gameview.SurfaceViewPractice
11-04 14:06:33.389: E/AndroidRuntime(727):  at java.lang.Class.newInstanceImpl(Native Method)
11-04 14:06:33.389: E/AndroidRuntime(727):  at java.lang.Class.newInstance(Class.java:1429)
11-04 14:06:33.389: E/AndroidRuntime(727):  at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
11-04 14:06:33.389: E/AndroidRuntime(727):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)

surfaceview로 바타화면 띄워보려고 쓰레드도 다만들고  xml 문서에다가 패키지랑 클래스명 넣어서 돌리니까 자ㄲ꾸

이런 에러가 뜨는데요   어디서 잘못한건지 모르곗습니다 . 도와주세요 ㅜ.ㅜ.