java - Why does the code run a command, even if its if statement isn't fulfilled? -

when run code in debug mode, can see, value "ooy" content set (and correct this) value "skii". code still starts activity "game.class", , activity "tutorial.class" in background. how can solve this?

mainscreen:

public class mainscreen extends activity  implements onclicklistener {     public static final string prefs_name = "myprefsfile1";     string ooy;     string skii;      super.oncreate(savedinstancestate);      @override     public void oncreate(bundle savedinstancestate) {          setcontentview(r.layout.activity_main_screen);          sharedpreferences tutoask = getsharedpreferences(prefs_name, 0);         ooy = tutoask.getstring("skipmessage", "not checked");          skii = "checked";          @override         public void onclick(view v) {             int id = v.getid();             if (id == r.id.btn_start) {                  startactivity(new intent(this, tutorial.class));                  if (ooy.equals(skii)){                     startactivity(new intent(this, game.class));                 }             } 

tutorial:

public class tutorial extends activity  implements onclicklistener {      button btn;     public checkbox checkbox1;     string checkboxresult = "not checked";     public static final string prefs_name = "myprefsfile1";     @override     protected void oncreate(bundle savedinstancestate) {          super.oncreate(savedinstancestate);          setcontentview(r.layout.activity_tutorial);          btn = (button) findviewbyid(r.id.startut);         btn.setonclicklistener( this);         checkbox1 = (checkbox) findviewbyid(r.id.checkbox1);     }      @override     public void onclick(view v) {          if (checkbox1.ischecked()){              checkboxresult = "checked";              sharedpreferences tutoask = getsharedpreferences(prefs_name, 0);             sharedpreferences.editor editor = tutoask.edit();             editor.putstring("skipmessage", checkboxresult);              // commit edits!             editor.commit();         }         startactivity(new intent(this, game.class));         finish();     } } 

are saying 2 variables have different values? sorry, sentence difficult understand.

if variables not equal execute inside if command since have not (!) command.

if not equal execute command:

startactivity(new intent(this,game.class)); 

i not sure want , actual problem is. have 2 variables not equal values; when check two, not equal, command inside if executed. should since have not statement.