How can I tell javac how to find the imageio-classes?

I'm new to java development, I just want to use javac for my build system. I'm using java to add a feature to a program someone else wrote, specifically involving GeoTiff images.

I found a class online that I would like to use, however I'm having trouble building the class, no matter what I do I get this message:

javac GeoTiffIIOMetadataAdapter.java
GeoTiffIIOMetadataAdapter.java:11: package com.sun.media.imageio.plugins.tiff does not exist
 i开发者_如何学Gomport com.sun.media.imageio.plugins.tiff.GeoTIFFTagSet;

I'm on RHEL5, so I installed the package I thought I needed, jai-imageio-core.x86_64. But the problem persists. I think that I'm not setting some variable corrently (like -sourcepath or something). I would appreciate any help.

You need to include the jar with -cp or -classpath.

So your compile would be like java -cp "<location to jai_imageio-1.1.jar>" <your java class> .

I think you need this jar file.

You can read more about javac here.

Find out where the package installed the jar file with the class you want to import, and add it to the javac commandline in the -classpath. (You then also need to include it in the classpath when your plugin runs; how to do that may depend on the program it plugs into).

I think that I'm not setting some variable correctly (like -sourcepath or something)

• This tutorial briefly introduces the usage of environment variables in Java: PATH and CLASSPATH

• This one seems to be the most popular answer to various classpath related questions I've seen at online forums: Setting the class path.
  To avoid "blind recommendation" I quickly skimmed through it before adding to this answer and, well... it really covers most of what one needs to know to deal with classpath. Pretty good; the reason why I didn't look into it before is that there always has been some guru nearby who explained stuff to me.