Android Options Menus

package com.myapp;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        
        final TextView txt = (TextView) findViewById(R.id.textView1);
        txt.setText("Click Button Menu to Show Menu");
    }
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_menu, menu);
        return true;
    }
    
    @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        switch (item.getItemId())
        {
        case R.id.menu1:
            Toast.makeText(MainActivity.this, "Your Click Menu 1", Toast.LENGTH_SHORT).show();
            return true;
 
        case R.id.menu2:
        	Toast.makeText(MainActivity.this, "Your Click Menu 2", Toast.LENGTH_SHORT).show();
            return true;
 
        case R.id.menu3:
        	Toast.makeText(MainActivity.this, "Your Click Menu 3", Toast.LENGTH_SHORT).show();
            return true;
 
        default:
            return super.onOptionsItemSelected(item);
        }
    	
    	
    }
    
}