Calling java class/procedure inside a trigger

Question

Hi all
I want like to call a java procedure from a trigger.
i know that i should load the class then write call specification and then call the java stored procedure.
Before that what are the prerequisites ..
Do i need to install java on my local machine?
secondly for sample testing can you provide me a sample java code that will connect to my db and inserts some sample data into sample table
regards
raj

Answer 1

Hi Here are the Details: I have the following
Java File : Helloworld.java
Class File : HelloWorld.class
Location of Java and Class Files: C:\Program Files\Java\jdk1.6.0_13\
Method : main(java.lang.String[])
Helloworld.java
class HelloWorldApp {
public static void main(String[] args) {
System.out.println("Hello World!"); // Display the string.
loadjava -u HR/hr@ORCL C:\Program Files\Java\jdk1.6.0_13\HelloWorldApp.class ( From where should i run this command ?should i go to  windows--start--cmd  ? )
CREATE OR REPLACE PROCEDURE sayhello ()
AS LANGUAGE JAVA
NAME 'HelloWorld.main(java.lang.String[])';
CREATE OR REPLACE TRIGGER sal_trig
AFTER UPDATE OF sal ON emp
FOR EACH ROW
CALL sayhello(); ------------------ ( where do i see the output when i call the procedure?)
regards
raj
Edited by: raj_fresher on May 20, 2009 7:57 AM