Using intents to switch activities

I am reading a android book for beginners, and while following on of the chapters I ran into a problem. The chapter is teaching about intents. I right now I have 2 layouts: main.xml, and digital_clock.xml. And in the AndroidManifest I have these lines of code:

 <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:label="@string/app_name" android:name=".Chapter11Activity" > <intent-filter > <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".DigitalClockActivity" > </activity> </application> 

Also I have the two Activity classes that correspond to the layouts:

Chapter11Activity: import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button;

public class Chapter11Activity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button a2 = (Button)findViewById(R.id.button1); a2.setOnClickListener(new OnClickListener() { public void onClick(View v) { Intent myIntent = new Intent(v.getContext(), DigitalClockActivity.class); startActivityForResult(myIntent, 0); } }); } } 

DigitalClockActivity:

import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class DigitalClockActivity extends Activity { public void OnCreate(Bundle sIS) { super.onCreate(sIS); setContentView(R.layout.digital_clock); Button a1 = (Button) findViewById(R.id.button01); a1.setOnClickListener(new OnClickListener() { public void onClick(View v) { Intent replyIntent = new Intent(); setResult(RESULT_OK, replyIntent); finish(); } }); } } 

When I run the app on my phone and switch to the second activity it shows nothing at all. Am I defining something wrong in the AndroidManifest? The application seems very straight forward, but it is not working. I have check over to make sure I didn't type anything wrong. Is it because I am running a android 2.3.3 phone and using the 1.5 sdk, and something is not backwards compatible? Any answers are appreciated!

~Andrew