First.java

class CameraDemo {
	Button buttonClick;
	ShutterCallback shutterCallback;
	PictrueCallback rawCallback;
	PictrueCallback jpegCallback;

	protected void onCreate(Bundle SavedInstance);
	protected void onStart();
	protected void onStop();
	protected void onDestroy();
	public Boolean onCreateOptionsMenu(Menu menu);

}


package android.hardware;
class Camera{
	public Camera open(int CameraId);
	public Parameters getParameters();
	public void setParameters(Parameters params);
	final public void setPreviewDisplay(SurfaceHolder holder);
	final public void startPreview();
	final public void stopPreview();
	final public void release();
	final public void takePucture(ShutterCallback shutter, PictrueCallback raw, PictrueCallback postView, PictrueCallback jpeg);
}

Second.java

package android.app;
class Activity{
	protected void onCreate(Bundle state);
	protected void onStart();
	protected void onStop();
	protected void onDestroy();
	public Boolean onCreateOptionsMenu(Menu menu);
	public Boolean onOptionsMenuItemSelected(MenuItem item);
}

class CameraDemo extends Activity {
	Button buttonClick;
	ShutterCallback shutterCallback;
	PictrueCallback rawCallback;
	PictrueCallback jpegCallback;

	protected void onCreate(Bundle SavedInstance);
	protected void onStart();
	protected void onStop();
	protected void onDestroy();
	public Boolean onCreateOptionsMenu(Menu menu);
}

Third.java

class Customer {
	public String id;
	public Address address;
	public Phone phone;
	public String email;
	public Account account;
}

class Account{
	public String id;
	public Address billing_address;
	public boolean is_closed;
	public Date open;
	public Date closed;
}