java - set() method receiving the value but get() method returning null -

i creating login page retrieves user details database , stores in user class. set methods receiving values correctly when try access details using method, it's returning null. see code snippets below , can let me know missing here.

retrieve details db , set values:

class userdao:

user.setid(rs.getstring("id")); user.sethashpassword(rs.getstring("hashpassword")); user.setaccesslevel(rs.getint("accesslevel")); user.setlastdate(rs.getdate("lastaccessdate")); 

note: connection closed after point.

setting values:

class user:

public class user   {     private string id;     private string hashpassword;     private int accesslevel;     private date lastaccessdate;      public user()     {      }      public void setid(string uid)      {         this.id = uid;     }         public string getid()     {         return this.id;     }     public void sethashpassword(string uhash)      {         this.hashpassword = uhash;     }         public string gethashpassword()     {         return this.hashpassword;     }     public void setaccesslevel(int ualevel)      {         this.accesslevel = ualevel;     }         public int getaccesslevel()     {         return this.accesslevel;     }     public void setlastdate(date uldate)      {         this.lastaccessdate = uldate;     }         public date getlastdate()     {         return this.lastaccessdate;     } } 

i accessing get() values class receiving null.

class login:

system.out.println(user.getid()); // returning null system.out.println(user.gethashpassword()); // returning null system.out.println(user.getaccesslevel()); // returning null system.out.println(user.getlastdate()); // returning null 

however, when create variables in userdao class (where db returning details) , call them login class, values return correctly.

can me find out error in code?

here complete code of login , userdao classes.

public class login extends javax.swing.jframe {     user user = new user();     static string struserid;     static string strpwd;      public login()     {         super();         initcomponents();         //jframe jfrm = new jframe("login");            }      private void jbutton1actionperformed(java.awt.event.actionevent evt) {                                                   passwordencrypt cpe = new passwordencrypt();         user user = new user();         userdao udao = new userdao();          struserid = jtextfield1.gettext();         char[] pwd = jpasswordfield1.getpassword();         strpwd = new string(pwd);          if (struserid.isempty())         {             joptionpane.showmessagedialog(null, "please enter user id");             jtextfield1.requestfocusinwindow();         }         else if (pwd.length == 0)         {             joptionpane.showmessagedialog(null, "please enter password");             jpasswordfield1.requestfocusinwindow();         }         else         {             try             {                 // authenticate user                 string strstoredpwd;                 boolean userexists;                  udao.authenticate(struserid);                  strstoredpwd = udao.dhash;                 // following lines used when user class returning value                 system.out.println(user.getid());                 system.out.println(user.gethashpassword());                 system.out.println(user.getaccesslevel());                 system.out.println(user.getlastdate());                                 userexists = cpe.validatepassword(strpwd, strstoredpwd);             }         }     } } 

---

public class userdao {     user user = new user();     public string dhash;     private connection connection;     private statement statement;      // authenticate existing user     public void authenticate(string userid) throws sqlexception     {         string query = "select * users id = '" + userid + "'";         resultset rs = null;          try         {             connection = connectionfactory.getconnection();             statement = connection.createstatement();             rs = statement.executequery(query);             //do thing rs              if (rs.next())             {                 user.setid(rs.getstring("id"));                 user.sethashpassword(rs.getstring("hashpassword"));                 user.setaccesslevel(rs.getint("accesslevel"));                 user.setlastdate(rs.getdate("lastaccessdate"));                                  dhash = rs.getstring("hashpassword");             }         }                 {             dbutil.close(rs);             dbutil.close(statement);             dbutil.close(connection);         }     } } 

you using 2 different objects. here's how can test:

in userdao, add:

system.out.format("userdao: %d%n", system.identityhashcode(user)); 

and in login, add same

system.out.format("login: %d%n", system.identityhashcode(user)); 

it hard figure out exact problem because haven't pasted relevant code, should on right track.