import java.sql.*;

public class Example {
   static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";  
   static final String DB_URL = "jdbc:mysql://localhost:3306/your_database_name_here";

   static final String USER = "root";
   static final String PASS = "";

   public static void main(String[] args) {
      Connection conn = null;
      Statement stmt = null;
      try{
         Class.forName("com.mysql.jdbc.Driver");

         System.out.println("Connecting to database...");
         conn = DriverManager.getConnection(DB_URL,USER,PASS);

         System.out.println("Creating statement...");
         stmt = conn.createStatement();
         String sql;
         sql = "SELECT id, name, age FROM your_table_name_here";
         ResultSet rs = stmt.executeQuery(sql);

         while(rs.next()){
            int id  = rs.getInt("id");
            String name = rs.getString("name");
            int age = rs.getInt("age");

            System.out.print("ID: " + id);
            System.out.print(", Name: " + name);
            System.out.println(", Age: " + age);
         }

         rs.close();
         stmt.close();
         conn.close();
      }catch(SQLException se){
         se.printStackTrace();
      }catch(Exception e){
         e.printStackTrace();
      }finally{
         try{
            if(stmt!=null)
               stmt.close();
         }catch(SQLException se2){
         }
         try{
            if(conn!=null)
            conn.close();
         }catch(SQLException se){
            se.printStackTrace();
         }
      }
      System.out.println("Goodbye!");
   }
}

Connecting to database...
Creating statement...
ID: 1, Name: Alice, Age: 25
ID: 2, Name: Bob, Age: 30
ID: 3, Name: Charlie, Age: 35
Goodbye!