mysql - database connection in java with separated class -

i wrote java code connect mysql database in main method, , success , results. when separate database code in separated class have problem connection database nothing

this code:

package database;  import java.sql.resultset; import java.sql.sqlexception;  public class database {     public static void main(string[] args) throws classnotfoundexception, sqlexception {         //connection connect = drivermanager.getconnection("jdbc:mysql://localhost/javadb", "root", "123");         system.out.println("sadsa");         connecttodatabase db = new connecttodatabase("javadb", "root", "123");         system.out.println("sadsa");          string sqlstatement =    "select  *\n" +                                     "from `javadb`.`user`\n" +                                     " limit 1000;";           resultset result = db.makequery(sqlstatement);          while (result.next()) {             system.out.println(result.getstring("id")                     + " " + result.getstring("username")                     + " " + result.getstring("password")                     );         }          db.closeconnection();      }  } 

the separated class:

package database;  import java.sql.connection; import java.sql.drivermanager; import java.sql.resultset; import java.sql.sqlexception; import java.sql.statement;   public class connecttodatabase {      // database variables     private final string databasename;// = "jdbc:mysql://localhost/javadb";  //url     private final string databaseusername;// = "root";     private final string databasepassword;// = "123";     private connection connect;     private statement sqlstatement;      // connect database     public connecttodatabase( string givendatabasename,string givendatabaseusername, string givendatabasepassword) throws sqlexception, classnotfoundexception {         class.forname("com.mysql.jdbc.driver");         this.databasename = givendatabasename;         this.databaseusername = givendatabaseusername;         this.databasepassword = givendatabasepassword;          this.connect = drivermanager.getconnection("jdbc:mysql://localhost/"+givendatabasename, givendatabasename, givendatabasepassword);         this.sqlstatement = this.connect.createstatement();     }      public resultset makequery(string givenstatement) throws sqlexception{         setsqlstatement(givenstatement);         return sqlstatement.executequery(givenstatement);     }        public string getdatabaseusername() {         return databaseusername;     }     public string getdatabasepassword() {         return databasepassword;     }     public string getdatabasename() {         return databasename;     }         public void setsqlstatement(statement sqlstatement) {         this.sqlstatement = sqlstatement;     }     public void closeconnection() throws sqlexception{         connect.close();     }      private void setsqlstatement(string givenstatement) {         throw new unsupportedoperationexception("not supported yet."); //to change body of generated methods, choose tools | templates.     }  } 

note: in main method if write same information connect directly work right:

connection connect = drivermanager.getconnection("jdbc:mysql://localhost/javadb", "root", "123"); 

this error message:

exception in thread "main" java.sql.sqlexception: access denied user 'javadb'@'localhost' (using password: yes)     @ com.mysql.jdbc.sqlerror.createsqlexception(sqlerror.java:1074)     @ com.mysql.jdbc.mysqlio.checkerrorpacket(mysqlio.java:4120)     @ com.mysql.jdbc.mysqlio.checkerrorpacket(mysqlio.java:4052)     @ com.mysql.jdbc.mysqlio.checkerrorpacket(mysqlio.java:925)     @ com.mysql.jdbc.mysqlio.secureauth411(mysqlio.java:4615)     @ com.mysql.jdbc.mysqlio.dohandshake(mysqlio.java:1302)     @ com.mysql.jdbc.connectionimpl.coreconnect(connectionimpl.java:2465)     @ com.mysql.jdbc.connectionimpl.connectonetryonly(connectionimpl.java:2498)     @ com.mysql.jdbc.connectionimpl.createnewio(connectionimpl.java:2283)     @ com.mysql.jdbc.connectionimpl.<init>(connectionimpl.java:822)     @ com.mysql.jdbc.jdbc4connection.<init>(jdbc4connection.java:47)     @ sun.reflect.nativeconstructoraccessorimpl.newinstance0(native method)     @ sun.reflect.nativeconstructoraccessorimpl.newinstance(unknown source)     @ sun.reflect.delegatingconstructoraccessorimpl.newinstance(unknown source)     @ java.lang.reflect.constructor.newinstance(unknown source)     @ com.mysql.jdbc.util.handlenewinstance(util.java:411)     @ com.mysql.jdbc.connectionimpl.getinstance(connectionimpl.java:404)     @ com.mysql.jdbc.nonregisteringdriver.connect(nonregisteringdriver.java:317)     @ java.sql.drivermanager.getconnection(unknown source)     @ java.sql.drivermanager.getconnection(unknown source)     @ database.connecttodatabase.<init>(connecttodatabase.java:27)     @ database.database.main(database.java:15) java result: 1 

thank much

you not passing right parameter values when create connecttodatabase instance. can show part of code?