gistfile1.java

package com.example.myfirstapp;

import android.app.Activity;
import android.os.Bundle;
// paul
import android.view.View;
import android.content.Intent;
import android.widget.EditText;
import com.example.myfirstapp.DisplayMessageActivity;

public class MainActivity extends Activity
{
    public final static String EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE";
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }
	
    public void sendMessage(View view) {
        // do something resposnes to button
        Intent intent = new Intent(this, DisplayMessageActivity.class);
	EditText editText = (EditText) findViewById(R.id.edit_message);
	String message = editText.getText().toString();
	intent.putExtra(EXTRA_MESSAGE, message);
	startActivity(intent);
	
    }

}

gistfile2.java

import android.app.Activity;
import android.os.Bundle;
import android.content.Intent;
import android.annotation.SuppressLint;
import android.widget.TextView;
import com.example.myfirstapp.MainActivity;
public class DisplayMessageActivity extends Activity {
/*
	@SupressLint("NewApi")
	@Overrride
*/
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		//setContentView(R.layout.avtivity_display_message);

		// Make sure we've running on Honeycom or highter to use ActionBar APIs
		//if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
		// Show the up button in the action bar
		//getActionBar().setDispalyHomeAsUpEnabled(true);
		//}

		Intent intent = getIntent();
		String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);

		
		TextView textView = new TextView(this);
		textView.setTextSize(40);
		textView.setText(message);


		setContentView(textView);
		

	}
/*
	public boolean onOptionsItemSelected(MenuItem item) {
        	switch (item.getItemId()) {
        		case android.R.id.home:
            		NavUtils.navigateUpFromSameTask(this);
            		return true;
       		}
        return super.onOptionsItemSelected(item);
    	}
*/
}

gistfile3.txt

-pre-compile:

-compile:
    [javac] Compiling 3 source files to /root/an/MyFirstApp/bin/classes
    [javac] /root/an/MyFirstApp/src/com/example/myfirstapp/DisplayMessageActivity.java:7: error: duplicate class: DisplayMessageActivity
    [javac] public class DisplayMessageActivity extends Activity {
    [javac]        ^
    [javac] /root/an/MyFirstApp/src/com/example/myfirstapp/MainActivity.java:9: error: cannot access DisplayMessageActivity
    [javac] import com.example.myfirstapp.DisplayMessageActivity;
    [javac]                              ^
    [javac]   bad source file: /root/an/MyFirstApp/src/com/example/myfirstapp/DisplayMessageActivity.java
    [javac]     file does not contain class com.example.myfirstapp.DisplayMessageActivity
    [javac]     Please remove or make sure it appears in the correct subdirectory of the sourcepath.