Android create OptionMenu, ContextMenu

Create OptionMenu-(Override  onCreateOptionsMenu())--
 
	public boolean onCreateOptionsMenu(Menu menu) {
		MenuInflater inflater = getMenuInflater();
		inflater.inflate(R.layout.menuex, menu);
		return true;
	}
 
 
Create ContextMenu-(Override  onCreateContextMenu())--
----------------------------------------------------
Button btn = (Button) findViewById(R.id.btnContext);
		registerForContextMenu(btn);
 
public void onCreateContextMenu(ContextMenu menu, View v,
			ContextMenuInfo menuInfo) {
		super.onCreateContextMenu(menu, v, menuInfo);
		MenuInflater inflater = getMenuInflater();
		inflater.inflate(R.layout.menuex, menu);
 
menux an xml file--
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/new_game"
          android:title="Web" />
    <item android:id="@+id/help"
          android:title="Help" />
     <item android:id="@+id/app"
          android:title="Application" />
</menu>