eclipse - android app project error -


i keep getting unable open trace error in eclipse android project reason. syntax error free.

here log text below. 

05-20 19:57:02.330: d/androidruntime(30377): shutting down vm 05-20 19:57:02.330: w/dalvikvm(30377): threadid=1: thread exiting uncaught exception (group=0x4001e578) 05-20 19:57:02.340: e/androidruntime(30377): fatal exception: main 05-20 19:57:02.340: e/androidruntime(30377): java.lang.runtimeexception: unable instantiate activity componentinfo{com.example.sudoku/com.example.sudoku.sudoku}: java.lang.classnotfoundexception: com.example.sudoku.sudoku in loader dalvik.system.pathclassloader[/data/app/com.example.sudoku-2.apk] 05-20 19:57:02.340: e/androidruntime(30377):    @ android.app.activitythread.performlaunchactivity(activitythread.java:1573) 05-20 19:57:02.340: e/androidruntime(30377):    @ android.app.activitythread.handlelaunchactivity(activitythread.java:1667) 05-20 19:57:02.340: e/androidruntime(30377):    @ android.app.activitythread.access$1500(activitythread.java:117) 05-20 19:57:02.340: e/androidruntime(30377):    @ android.app.activitythread$h.handlemessage(activitythread.java:935) 05-20 19:57:02.340: e/androidruntime(30377):    @ android.os.handler.dispatchmessage(handler.java:99) 05-20 19:57:02.340: e/androidruntime(30377):    @ android.os.looper.loop(looper.java:130) 05-20 19:57:02.340: e/androidruntime(30377):    @ android.app.activitythread.main(activitythread.java:3691) 05-20 19:57:02.340: e/androidruntime(30377):    @ java.lang.reflect.method.invokenative(native method) 05-20 19:57:02.340: e/androidruntime(30377):    @ java.lang.reflect.method.invoke(method.java:507) 05-20 19:57:02.340: e/androidruntime(30377):    @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:907) 05-20 19:57:02.340: e/androidruntime(30377):    @ com.android.internal.os.zygoteinit.main(zygoteinit.java:665) 05-20 19:57:02.340: e/androidruntime(30377):    @ dalvik.system.nativestart.main(native method) 05-20 19:57:02.340: e/androidruntime(30377): caused by: java.lang.classnotfoundexception: com.example.sudoku.sudoku in loader dalvik.system.pathclassloader[/data/app/com.example.sudoku-2.apk] 05-20 19:57:02.340: e/androidruntime(30377):    @ dalvik.system.pathclassloader.findclass(pathclassloader.java:240) 05-20 19:57:02.340: e/androidruntime(30377):    @ java.lang.classloader.loadclass(classloader.java:551) 05-20 19:57:02.340: e/androidruntime(30377):    @ java.lang.classloader.loadclass(classloader.java:511) 05-20 19:57:02.340: e/androidruntime(30377):    @ android.app.instrumentation.newactivity(instrumentation.java:1021) 05-20 19:57:02.340: e/androidruntime(30377):    @ android.app.activitythread.performlaunchactivity(activitythread.java:1565) 05-20 19:57:02.340: e/androidruntime(30377):    ... 11 more 05-20 19:57:04.352: i/dalvikvm(30377): threadid=4: reacting signal 3 05-20 19:57:04.352: e/dalvikvm(30377): unable open stack trace file '/data/anr/traces.txt': permission denied 05-20 19:57:12.039: i/process(30377): sending signal. pid: 30377 sig: 9

"my java classes are: about.java mainactivity.java layout is: about.xml activity_main.xml" sudoku.java class? maybe have deleted accidentally or changed name of it?


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