ABC

package conn;

import java.sql.*;
public class JDBCExample {
   // JDBC driver name and database URL
   static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
   static final String DB_URL = "jdbc:mysql://localhost/STUDENTS";
   //  Database credentials
   static final String USER = "root";
   static final String PASS = "mysql";

   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

      String sql = "SELECT * FROM register";
      stmt = conn.createStatement();
      ResultSet rs = stmt.executeQuery(sql);
  //STEP 5: Extract data from result set
      while(rs.next()){
         //Retrieve by column name

         String first = rs.getString("username");
         String last = rs.getString("password");
         //Display values

         System.out.print(", First: " + first);
         System.out.println(", Last: " + last);
      }
      rs.close();



   }catch(Exception e){
      //Handle errors for Class.forName
      e.printStackTrace();
   }finally{
 //STEP 5: 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 JDBCExample