instantiation - Work with methods, setters and getters in java -

i have class:

public class person {     /**      *       */     private static final long serialversionuid = 1l;     private string firstname = "vasya";     private string lastname = "pupkin";     private integer age = 58;     private integer phone = 2;      @override     public string tostring()      {         return "person [firstname=" + firstname + ", lastname=" + lastname                 + ", age=" + age + "]";     }      public void setname(string name)     {         firstname = name;     }      public void setlastname(string lname)     {         lastname = lname;     }      public void setage(integer personage)     {         age = personage;     }      public void setphone(integer personphone)     {         phone = personphone;     }      public string getname()     {         return firstname;     }      public string getlastname()     {         return lastname;     }      public integer getage()     {         return age;     }      public integer getphone()     {         return phone;     }      public void init()     {         this.setname("");         this.setlastname("");         this.setphone(0);         this.setage(0);     } } 

i create variable: person someperson, call method setname variable someperson:

someperson.setname(""); 

but raises error.

based on provided code, following should work:

person someperson = new person(); someperson.setname(""); 

if doesn't, else going on.