java - finding element -

i´ve got method:

public user findbyid(string name)  {     (user u : list)      {         if (u.getfirstname() == name)          {             return u;         }     }     return null; // or empty user } 

how can program method in window class can print out user i´ve found?

this got. (think im way off)

public void findcustomer() {     string firstname = findcustomerfield.gettext();      if(!firstname.equals(""))     {         string result = list.findbyid(firstname);         outputtext.settext(result);      }  } 

don't use == in comparison

if (u.getfirstname() == name)  

but equal

if (u.getfirstname().equal(name))  

the operator == tests see if 2 object reference variables refer exact same instance of object.

the method .equals() tests see if 2 objects being compared each other equivalent

you need change findcustomer method this

public void findcustomer() {     string firstname = findcustomerfield.gettext();      if(!"".equal(firstname))     {         user user = list.findbyid(firstname);         if(user != null)         {             outputtext.settext(user.getfirstname());         }     } }