JDBC for Oracle - Herong's Tutorial Examples - v3.13, by Herong Yang
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, CountChar(), with 1 IN parameter and 1 OUT parameter. The program below shows you to create a CallableStatement object to execute this stored procedure:
/* OracleCallParameter.java
* Copyright (c) HerongYang.com. All Rights Reserved.
*/
import java.sql.*;
public class OracleCallParameter {
public static void main(String [] args) {
Connection con = null;
try {
oracle.jdbc.pool.OracleDataSource ds
= new oracle.jdbc.pool.OracleDataSource();
ds.setDriverType("thin");
ds.setServerName("localhost");
ds.setPortNumber(1521);
ds.setDatabaseName("XE");
ds.setUser("Herong");
ds.setPassword("TopSecret");
con = ds.getConnection();
// Create CallableStatement
CallableStatement cs = con.prepareCall(
"CALL CountChar(?,?)");
// Provide values for IN parameters
String word = "Herong";
cs.setString(1,word);
// Register OUT parameters
cs.registerOutParameter(2, java.sql.Types.INTEGER);
// Execute the CALL statement and ignore result sets
cs.execute();
// Retrieve values from OUT parameters
int length = cs.getInt(2);
System.out.println("Input word: "+word);
System.out.println("Word length: "+length);
// Close resource
cs.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
The output of the program confirms that I handled IN and OUT parameters correctly:
herong> java -cp .;ojdbc11.jar OracleCallParameter Input word: Herong Word length: 6
Table of Contents
JDBC (Java Database Connectivity) Introduction
Oracle Express Edition Installation on Windows
Oracle - Reference Implementation of JdbcRowSet
►Oracle - JBDC CallableStatement
Overview of CallableStatement Objects
"CREATE PROCEDURE" - Creating a Simple Procedure
Creating Procedures with IN and OUT Parameters
Creating CallableStatement Objects with prepareCall()
►Creating CallableStatement Objects with Parameters
getProcedures() - Listing Stored Procedures
Oracle CLOB (Character Large Object) - TEXT
Oracle BLOB (Binary Large Object) - BLOB