MySql Connection Helper in CQ

MySQLConnectionHelper.java

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class MySQLConnectionHelper {
  private static volatile MySQLConnectionHelper mySQLConnectionHelper;

  private MySQLConnectionHelper() {

    try {
      Class.forName("com.mysql.jdbc.Driver").newInstance();
      //For Teradata Class.forName("com.teradata.jdbc.TeraDriver").newInstance();
    } catch (InstantiationException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (IllegalAccessException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (ClassNotFoundException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }

  }

  public static synchronized Connection getConnection(final String url,
      final String uid, final String pwd) throws SQLException {
    if (mySQLConnectionHelper == null) {
      mySQLConnectionHelper = new MySQLConnectionHelper();
    }
    try {
      return DriverManager.getConnection(url, uid, pwd);
    } catch (SQLException e) {
      throw e;
    }
  }

  public static void close(Connection connection) {
    try {
      if (connection != null) {
        connection.close();
      }
    } catch (SQLException e) {
      e.printStackTrace();
    }
  }

}