Here is source code of the Program to Demonstart Menu Groups in Android. The program is successfully compiled and run on a Windows system using Eclipse Ide. The program output is also shown below.
Main Activity

package com.example.menugroup;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}

main

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >

<item
android:id="@+id/menu_bookmark"
android:icon="@drawable/icon_bookmark"
android:title="Save"/>
<!-- menu group -->
<group android:id="@+id/group_delete" >
<item
android:id="@+id/menu_more"
android:title="More"/>
<item
android:id="@+id/menu_delete"
android:title="Delete"/>
</group>

</menu>