package  testdb;

 import  java.sql.*;
 import  java.util.Properties;
//import jbird.org.firebirdsql.jdbc;

 public   class  Main {
    
    /** Creates a new instance of Main */
     public   static   void  main(String [] args) {
      Properties connInfo =  new  Properties();
      
      connInfo.put("user", "sysdba");
      connInfo.put("password", "masterkey");
      connInfo.put("lc_type", "win1251");
      
      try   {
        Class  dr =  Class .forName("org.firebirdsql.jdbc.FBDriver");
             
         Connection c = DriverManager.getConnection("jdbc:firebirdsql://localhost:C:/db/ozmm/dbmain.gdb",
                 connInfo);
                 /*"sysdba", "masterkey");*/
Statement stmt = c.createStatement();
String sql = "select * from produkt";
ResultSet rs = stmt.executeQuery(sql);
System.out.print("res >>>");
System.out.print(rs.getString("kod_num"));
     
     }
      catch  (Exception e) {
          
         System.out.print("Except >" + e.getMessage());
     }
        
    }
 }

init:
deps-jar:
Compiling  1  source file to C:\D\J\NetBean\TestDB\build\classes
compile:
Exception in thread "main" java.lang.NoClassDefFoundError: javax/resource/ResourceException
        at java.lang. Class .forName0( Native  Method)
        at java.lang. Class .forName( Class .java: 164 )
        at testdb.Main.main(Main.java: 20 )
debug: