New to android studio and java, stuck with an error I can't fix -

i working this tutorial, , got stuck.

i error on opensettings(); , opensearch(); program says

can not resolve method

could please tell me have done wrong?

@override  public boolean onoptionsitemselected(menuitem item) {     if (item.getitemid() == r.id.action_settings) {         opensetting();         return true;     } else if (item.getitemid() == r.id.action_search) {         opensearch();         return true;     }     return super.onoptionsitemselected(item); } 

if had guess think following example here: https://github.com/arun-gupta/android-samples/blob/master/helloworldproject/helloworld/src/main/java/name/arungupta/android/helloworld/mainactivity.java

to solve problem need add these 2 methods in class:

    private void opensettings() {     intent intent = new intent(this, settingsactivity.class);     intent.putextra(settings_message, "settings");     startactivity(intent); }  private void opensearch() {     intent intent = new intent(this, searchactivity.class);     intent.putextra(search_message, "search now");     startactivity(intent); }