Runtime error when using startActivity()

I am trying to use the following method to switch to a different application:

private void switchAcitivty() {
     Intent intent = new Intent();
     intent.setClass(this, TeleJokeActivity.class);
     startActivity(intent);
 }
 

But I am getting the following errors:

04-10 03:05:51.901: E/AndroidRuntime(831): FATAL EXCEPTION: main
 04-10 03:05:51.901: E/AndroidRuntime(831): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.telejoke.mo/com.telejoke.mo.TeleJokeActivity}: java.lang.NullPointerException
 04-10 03:05:51.901: E/AndroidRuntime(831):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at android.os.Handler.dispatchMessage(Handler.java:99)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at android.os.Looper.loop(Looper.java:123)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at android.app.ActivityThread.main(ActivityThread.java:4627)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at java.lang.reflect.Method.invokeNative(Native Method)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at java.lang.reflect.Method.invoke(Method.java:521)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at dalvik.system.NativeStart.main(Native Method)
 04-10 03:05:51.901: E/AndroidRuntime(831): Caused by: java.lang.NullPointerException
 04-10 03:05:51.901: E/AndroidRuntime(831):  at android.app.Activity.findViewById(Activity.java:1637)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at com.telejoke.mo.TeleJokeActivity.<init>(TeleJokeActivity.java:11)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at java.lang.Class.newInstanceImpl(Native Method)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at java.lang.Class.newInstance(Class.java:1429)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
 04-10 03:05:51.901: E/AndroidRuntime(831):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
 04-10 03:05:51.901: E/AndroidRuntime(831):  ... 11 more
 

Not sure why I am getting NullPointerException.

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