title: How to use CLASSPATH / PATH?
body: <p>To begin with, I'm not entirely sure this is the correct question. Basically, my end goal is to produce a program that can manipulate a set of .docx files to have small changes to each of them. It seemed to me that docx4j was the best way to complete this goal. However, I've never used a library outside of the provided one. I began by attempting to decipher all the information provided in the manual, and it began by telling me I need SLF4J in order to let me use docx4j.</p>
  
  <p>The SLF4J manual told me to 
  "add the file slf4j-api-1.7.7.jar to your class path."
  as well as the file 
  "slf4j-simple-1.7.7.jar"</p>
  
  <p>I proceeded to go to System > Advanced System Settings > Environment Variables and I found "Path" under System variables. It seemed to me that this was the correct "class path", so I added to the end of it 
  C:\Users\diego_000\Desktop\slf4j-1.7.7\slf4j-api-1.7.7.jar;C:\Users\diego_000\Desktop\slf4j-1.7.7\slf4j-simple-1.7.7.jar;
  This seemed to be what the manual told me to do and I was confident of the Hello World program (provided by their website) running successfully.</p>
  
  <pre><code>import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class HelloWorld {
    public static void main(String[] args) {
      Logger logger = LoggerFactory.getLogger(HelloWorld.class);
      logger.info("Hello World");
    }
  }
  </code></pre>
  
  <p>On compilation, I'm thrown the following errors:</p>
  
  <pre><code>Compilation completed.  The following files were not compiled:
  4 errors found:
  File: C:\Users\diego_000\Desktop\Program\HelloWorld.java  [line: 1]
  Error: package org.slf4j does not exist
  File: C:\Users\diego_000\Desktop\Program\HelloWorld.java  [line: 2]
  Error: package org.slf4j does not exist
  File: C:\Users\diego_000\Desktop\Program\HelloWorld.java  [line: 6]
  Error: cannot find symbol
    symbol:   class Logger
    location: class HelloWorld
  File: C:\Users\diego_000\Desktop\Program\HelloWorld.java  [line: 6]
  Error: cannot find symbol
    symbol:   variable LoggerFactory
    location: class HelloWorld
  </code></pre>
  
  <p>From this, I gather I've done something wrong. I'm fairly certain I know the pseudo logic behind the program I want to write, but I'm not really sure how to get to the point of writing it. I haven't done any research past the point I'm at, but if someone could go beyond just this question and walk me through the steps of getting to the writing code point, I would very much appreciate it.</p>
  
  <p>Thanks!</p>