JDBC

import java.sql.*;

public class Main {
   // JDBC driver name and database URL
   static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
   // LINK DO BAZE , NEOPHODAN ZA OSTVARIVANJE KONEKCIJE
   static final String DB_URL = "jdbc:mysql://localhost/skola";

   //  PODACI ZA PRISTUP MYSQL : Vasi su verovatno  root / VASA SIFRA
   static final String USER = "username";
   static final String PASS = "password";

   public static void main(String[] args) {
   Connection conn = null;
   Statement stmt = null;
   try{
      //STEP 2: Register JDBC driver
      Class.forName("com.mysql.jdbc.Driver");

      //STEP 3: Open a connection
      System.out.println("Connecting to database...");
      conn = DriverManager.getConnection(DB_URL,USER,PASS);

      //STEP 4: Execute a query
      System.out.println("Creating statement...");
      stmt = conn.createStatement();
      String sql;
      sql = "SELECT * FROM Ucenik";
      ResultSet rs = stmt.executeQuery(sql);

      //STEP 5: Extract data from result set
      while(rs.next()){
         //Retrieve by column name
         int sifra  = rs.getInt("sifra");
         int sifraOdeljenja = rs.getInt("sifra_odeljenje");
         String ime = rs.getString("ime");
         String prezime = rs.getString("prezime");

         //Display values
         System.out.print("ID: " + sifra);
         System.out.print(", Odeljenje: " + sifraOdeljenja);
         System.out.print(", Ime: " + ime);
         System.out.println(", Prezime: " + prezime);
      }
      //STEP 6: Clean-up environment
      rs.close();
      stmt.close();
      conn.close();
   }catch(SQLException se){
      //Handle errors for JDBC
      se.printStackTrace();
   }catch(Exception e){
      //Handle errors for Class.forName
      e.printStackTrace();
   }finally{
      //finally block used to close resources
      try{
         if(stmt!=null)
            stmt.close();
      }catch(SQLException se2){
      }// nothing we can do
      try{
         if(conn!=null)
            conn.close();
      }catch(SQLException se){
         se.printStackTrace();
      }//end finally try
   }//end try
   System.out.println("Goodbye!");
}//end main
}//end FirstExample