CODE EXAMPLE FOR JAVA

android activity set action bar options

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.main_menu, menu);
    return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()){
        case R.id.menu1:
            Toast.makeText(this, "Clicked Menu 1", Toast.LENGTH_SHORT).show();
            break;
        case R.id.menu2:
            Toast.makeText(this, "Clicked Menu 2", Toast.LENGTH_SHORT).show();
            break;
        default:
            break;
    }
    return super.onOptionsItemSelected(item);
}