Creating CallableStatement Objects with Parameters

This section describes how to create CallableStatement objects with IN and OUT parameters.

For an IN parameter defined in a stored procedure, you can put a static value or a place holder in the CALL statement when creating the CallableStatement object. A value for that place holder must be provided by the setXXX() method.

For an OUT parameter defined in a stored procedure, you must put a place holder in the CALL statement when creating the CallableStatement object. That place holder must be registered with the registerOutParameter() method.

In a previous tutorial, I defined a store procedure called, ReverseProcedure(), with 1 IN parameter and 2 OUT parameters. The program below shows you to create a CallableStatement object to execute this stored procedure:

 * Copyright (c) All Rights Reserved.
import java.sql.*;
public class MySqlCallParameter {
  public static void main(String [] args) {
    Connection con = null;
    try {
      com.mysql.cj.jdbc.MysqlDataSource ds
        = new com.mysql.cj.jdbc.MysqlDataSource();
      con = ds.getConnection();

// Create CallableStatement
      CallableStatement cs = con.prepareCall(
        "CALL ReverseProcedure(?,?,?)");

// Provide values for IN parameters
      String word = "Herong";

// Register OUT parameters
      cs.registerOutParameter(2, java.sql.Types.VARCHAR);
      cs.registerOutParameter(3, java.sql.Types.INTEGER);

// Execute the CALL statement and ignore result sets

// Retrieve values from OUT parameters
      String reversed = cs.getString(2);
      int length = cs.getInt(3);
      System.out.println("Input word: "+word);
      System.out.println("Output word: "+reversed);
      System.out.println("Word length: "+length);

// Close resource

    } catch (Exception e) {
      System.err.println("Exception: "+e.getMessage());

The output of the program confirms that I handled IN and OUT parameters correctly:

herong> java -cp .:mysql-connector-java.jar \

Input word: Herong
Output word: gnoreH
Word length: 6

Table of Contents

 About This Book

 JDBC (Java Database Connectivity) Introduction

 JDK (Java SE) Installation

 MySQL Installation on Windows

 MySQL JDBC Driver (MySQL Connector/J)

 MySQL - PreparedStatement

 MySQL - Reference Implementation of JdbcRowSet

MySQL - JBDC CallableStatement

 Overview of CallableStatement Objects

 "CREATE PROCEDURE" - Creating a Simple Procedure

 Creating Procedures with IN and OUT Parameters

 Creating Procedures with INOUT Parameters

 Creating Procedures with Multiple Queries

 Creating CallableStatement Objects with prepareCall()

 Capturing ResultSet with executeQuery()

Creating CallableStatement Objects with Parameters

 Common Errors with CallableStatement Parameters

 Creating CallableStatement Objects with INOUT Parameters

 Retrieving Multiple ResultSet Objects

 Executing Stored Procedures without Permission

 getProcedures() - Listing Stored Procedures

 MySQL CLOB (Character Large Object) - TEXT

 MySQL BLOB (Binary Large Object) - BLOB

 Using Connection Pool with JDBC

 Archived Tutorials


 Full Version in PDF/EPUB