logcat

D/dalvikvm( 2782): GC_EXPLICIT freed 32K, 50% free 2696K/5379K, external 0K/0K, paused 47ms
I/ActivityManager( 1073): Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.example.myfirstapp/.MainActivity bnds=[240,123][320,223] } from pid 2430
D/dalvikvm( 1073): GC_EXTERNAL_ALLOC freed 660K, 40% free 6354K/10439K, external 999K/1310K, paused 124ms
I/ActivityManager( 1073): Start proc com.example.myfirstapp for activity com.example.myfirstapp/.MainActivity: pid=3308 uid=10070 gids={3003, 1015}
D/dalvikvm( 3308): GC_EXTERNAL_ALLOC freed 49K, 51% free 2684K/5379K, external 0K/0K, paused 121ms
D/dalvikvm( 3308): GC_EXTERNAL_ALLOC freed 3K, 51% free 2687K/5379K, external 8K/520K, paused 118ms
I/ActivityManager( 1073): Displayed com.example.myfirstapp/.MainActivity: +730ms
D/dalvikvm( 2430): GC_CONCURRENT freed 642K, 52% free 3304K/6791K, external 1477K/1900K, paused 4ms+5ms
D/LatinIME( 1158): mLongPressDelay = 400
D/LatinKeyboardBaseView( 1158): mLongPressDelay = 400
D/PointerTracker( 1158): mLongPressKeyTimeout = 400
D/PointerTracker( 1158): mLongPressKeyTimeout = 400
D/dalvikvm( 1158): GC_EXTERNAL_ALLOC freed 337K, 49% free 3161K/6087K, external 1315K/1529K, paused 164ms
D/LatinIME( 1158): mLongPressDelay = 400
D/LatinKeyboardBaseView( 1158): mLongPressDelay = 400
D/PointerTracker( 1158): mLongPressKeyTimeout = 400
D/PointerTracker( 1158): mLongPressKeyTimeout = 400
D/LatinIME( 1158): mLongPressDelay = 400
D/LatinKeyboardBaseView( 1158): mLongPressDelay = 400
D/PointerTracker( 1158): mLongPressKeyTimeout = 400
D/PointerTracker( 1158): mLongPressKeyTimeout = 400
D/dalvikvm( 1158): GC_EXTERNAL_ALLOC freed 41K, 49% free 3157K/6087K, external 1315K/1529K, paused 163ms
D/szipinf ( 1073): Initializing inflate state
I/ActivityManager( 1073): Starting: Intent { cmp=com.example.myfirstapp/.DisplayMessageActivity (has extras) } from pid 3308
E/MediaPlayer( 3308): Unable to to create media player
D/MediaPlayer( 3308): create failed:
D/MediaPlayer( 3308): java.io.IOException: setDataSourceFD failed.: status=0x80000000
D/MediaPlayer( 3308):   at android.media.MediaPlayer.setDataSource(Native Method)
D/MediaPlayer( 3308):   at android.media.MediaPlayer.create(MediaPlayer.java:666)
D/MediaPlayer( 3308):   at com.example.myfirstapp.DisplayMessageActivity.onCreate(DisplayMessageActivity.java:43)
D/MediaPlayer( 3308):   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
D/MediaPlayer( 3308):   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1722)
D/MediaPlayer( 3308):   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1784)
D/MediaPlayer( 3308):   at android.app.ActivityThread.access$1500(ActivityThread.java:123)
D/MediaPlayer( 3308):   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
D/MediaPlayer( 3308):   at android.os.Handler.dispatchMessage(Handler.java:99)
D/MediaPlayer( 3308):   at android.os.Looper.loop(Looper.java:130)
D/MediaPlayer( 3308):   at android.app.ActivityThread.main(ActivityThread.java:3835)
D/MediaPlayer( 3308):   at java.lang.reflect.Method.invokeNative(Native Method)
D/MediaPlayer( 3308):   at java.lang.reflect.Method.invoke(Method.java:507)
D/MediaPlayer( 3308):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864)
D/MediaPlayer( 3308):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
D/MediaPlayer( 3308):   at dalvik.system.NativeStart.main(Native Method)
D/AndroidRuntime( 3308): Shutting down VM
W/dalvikvm( 3308): threadid=1: thread exiting with uncaught exception (group=0x40018560)
E/AndroidRuntime( 3308): FATAL EXCEPTION: main
E/AndroidRuntime( 3308): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myfirstapp/com.example.myfirstapp.DisplayMessageActivity}: java.lang.NullPointerException
E/AndroidRuntime( 3308):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1768)
E/AndroidRuntime( 3308):        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1784)
E/AndroidRuntime( 3308):        at android.app.ActivityThread.access$1500(ActivityThread.java:123)
E/AndroidRuntime( 3308):        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
E/AndroidRuntime( 3308):        at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 3308):        at android.os.Looper.loop(Looper.java:130)
E/AndroidRuntime( 3308):        at android.app.ActivityThread.main(ActivityThread.java:3835)
E/AndroidRuntime( 3308):        at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 3308):        at java.lang.reflect.Method.invoke(Method.java:507)
E/AndroidRuntime( 3308):        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864)
E/AndroidRuntime( 3308):        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
E/AndroidRuntime( 3308):        at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 3308): Caused by: java.lang.NullPointerException
E/AndroidRuntime( 3308):        at com.example.myfirstapp.DisplayMessageActivity.onCreate(DisplayMessageActivity.java:44)
E/AndroidRuntime( 3308):        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
E/AndroidRuntime( 3308):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1722)
E/AndroidRuntime( 3308):        ... 11 more
W/ActivityManager( 1073):   Force finishing activity com.example.myfirstapp/.DisplayMessageActivity
W/ActivityManager( 1073):   Force finishing activity com.example.myfirstapp/.MainActivity
W/ActivityManager( 1073): Activity pause timeout for HistoryRecord{407626b8 com.example.myfirstapp/.DisplayMessageActivity}
I/ActivityManager( 1073): No longer want android.process.acore (pid 2977): hidden #16
I/WindowManager( 1073): WIN DEATH: Window{408a3248 com.android.contacts/com.android.contacts.DialtactsContactsEntryActivity paused=false}
I/Process ( 3308): Sending signal. PID: 3308 SIG: 9
E/InputDispatcher( 1073): channel '4076a988 com.example.myfirstapp/com.example.myfirstapp.MainActivity (server)' ~ Consumer closed input channel or an error occurred.  events=0x8
E/InputDispatcher( 1073): channel '4076a988 com.example.myfirstapp/com.example.myfirstapp.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
I/ActivityManager( 1073): Process com.example.myfirstapp (pid 3308) has died.
I/WindowManager( 1073): WIN DEATH: Window{4076a988 com.example.myfirstapp/com.example.myfirstapp.MainActivity paused=true}
W/InputManagerService( 1073): Got RemoteException sending setActive(false) notification to pid 3308 uid 10070
D/dalvikvm( 1424): GC_EXPLICIT freed 242K, 52% free 2782K/5767K, external 0K/0K, paused 49ms
W/ActivityManager( 1073): Activity destroy timeout for HistoryRecord{407ee720 com.example.myfirstapp/.MainActivity}
W/ActivityManager( 1073): Activity destroy timeout for HistoryRecord{407626b8 com.example.myfirstapp/.DisplayMessageActivity}
D/dalvikvm( 1714): GC_EXPLICIT freed 16K, 50% free 2692K/5379K, external 0K/0K, paused 52ms