Re: Can a ResultSet be passed back to a main program

From:

Lew <lewbloch@gmail.com>

Newsgroups:

comp.lang.java.help

Date:

Mon, 10 Oct 2011 14:26:23 -0700 (PDT)

Message-ID:

<21113601.1150.1318281983930.JavaMail.geo-discussion-forums@prmr13>

Linus Flustillbe wrote:

Lew wrote:

Linus Flustillbe wrote:

import java.sql.*;

import mainClasses.*;
public class connectionTest {
  public static void main(String[] args)
    throws ClassNotFoundException, SQLException
  {
    Class.forName("oracle.jdbc.driver.OracleDriver");

Don't call 'forName()' more than once per application run. Once the class is loaded, it's loaded. Reloading it doesn't help and the method call spins cycles to no avail.

Hi Lew, I have to admit I'm not quite sure why that statement is there.
I'll have to read up on it. I took the bulk fo the class from another
sample I found online and modified it. Don't explain what it does, I'll
figure it out... gotta learn on my own... I'm sure the tutorials have
something or JLS.

Use the Javadocs, of course. That's what they're for. Any time you have to look up a method or type in the API, use the Javadocs as your first recourse.
<http://download.oracle.com/javase/7/docs/api/java/lang/Class.html#forName(java.lang.String)>

Whoever wrote the "sample" you found online must have their head screwed on wrong. That's the trouble when you copy-and-paste without understanding what you're taking. You might, as here, grab some bad code and not even know it.

Also, don't reject explanations. That's not an optimal strategy for learning. Don't be macho.

--
Lew