gistfile1.txt

-compile:
    [javac] Compiling 3 source files to /root/an/MyFirstApp/bin/classes
    [javac] /root/an/MyFirstApp/src/com/example/myfirstapp/DisplayMessageActivity.java:22: error: cannot find symbol
    [javac] 		String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
    [javac] 		                                       ^
    [javac]   symbol:   variable MainActivity
    [javac]   location: class DisplayMessageActivity
    [javac] /root/an/MyFirstApp/src/com/example/myfirstapp/DisplayMessageActivity.java:6: error: duplicate class: DisplayMessageActivity
    [javac] public class DisplayMessageActivity extends Activity {
    [javac]        ^
    [javac] /root/an/MyFirstApp/src/com/example/myfirstapp/MainActivity.java:23: error: cannot access DisplayMessageActivity
    [javac]         Intent intent = new Intent(this, DisplayMessageActivity.class);
    [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.
    [javac] 3 errors