Add Action Items to the Action Bar

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >


</LinearLayout>

package com.java2s.myapplication3.app;
/* w  ww .  ja va 2  s.c  om*/

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

public class MainActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        CreateMenu(menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        return MenuChoice(item);
    }

    private void CreateMenu(Menu menu)
    {
        MenuItem mnu1 = menu.add(0, 0, 0, "Item 1");
        {
            mnu1.setIcon(R.drawable.ic_launcher);
            mnu1.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
        }
        MenuItem mnu2 = menu.add(0, 1, 1, "Item 2");
        {
            mnu2.setIcon(R.drawable.ic_launcher);
            mnu2.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
        }
        MenuItem mnu3 = menu.add(0, 2, 2, "Item 3");
        {
            mnu3.setIcon(R.drawable.ic_launcher);
            mnu3.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
        }
        MenuItem mnu4 = menu.add(0, 3, 3, "Item 4");
        {
            mnu4.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
        }
        MenuItem mnu5 = menu.add(0, 4, 4, "Item 5");
        {
            mnu5.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
        }
    }

    private boolean MenuChoice(MenuItem item)
    {
        switch (item.getItemId()) {
            case 0:
                Toast.makeText(this, "You clicked on Item 1",
                        Toast.LENGTH_LONG).show();
                return true;
            case 1:
                Toast.makeText(this, "You clicked on Item 2",
                        Toast.LENGTH_LONG).show();
                return true;
            case 2:
                Toast.makeText(this, "You clicked on Item 3",
                        Toast.LENGTH_LONG).show();
                return true;
            case 3:
                Toast.makeText(this, "You clicked on Item 4",
                        Toast.LENGTH_LONG).show();
                return true;
            case 4:
                Toast.makeText(this, "You clicked on Item 5",
                        Toast.LENGTH_LONG).show();
                return true;
        }
        return false;
    }

}