java - Add Jar File to Buildpath in Windows Command Line

Question

Im quite annoyed at having to ask this but I cant get it to work. Currently I have a project with:

5 Classes in the src/ folder

2 JARS named profiles.jar and classifier.jar in the root folder

I want to create a "makefile?" or "batch file?" to compile and run these classes FROM THE WINDOWS COMMAND LINE, but first add the jars to the buildpath? Im not sure how I go about this

When I try to do it, it says that the class is not found, most likely due to me not adding the jars to the buildpath correctly. What are the commands I need to use to run this in command prompt?

Thanks Philip

EDIT

Thanks for the help, Im having alot of trouble getting it to work tho Currently I have a project with 5 classes in the src folder, and 2 jars in the jar folder

Here are the commands Im running:

set CLASSPATH=C:wampwww ewsUserProfilingjarsclassifier.jar ;C:wampwww ewsUserProfilingjarsprofiles.jar

Then from the root folder, Im running:

javac src/*.java

Then:

java -cp ./src:./jars/* src/Interaction

Interaction is the main class, Im getting all sorts of noclassfound errors, am I doing something wrong? Many thanks Philip

THE ERROR

java -cp ./src:./jars/* Interaction Exception in thread "main" java.lang.NoClassDefFoundError: Interaction Caused by: java.lang.ClassNotFoundException: Interaction at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClassInternal(Unknown Source) Could not find the main class: Interaction. Program will exit.

Answer 1

In version older than or equal to Java version 5 you must specify each jar individually, and the root of your source, on your classpath e.g.

java -cp a.jar:b.jar:c.jar:./src MainClass

In version 6 you can use wildcards for the jars e.g.

java -cp ./src:* MainClass

but it might be cleaner putting your jars into a sub directory e.g.

java -cp ./src:./jars/* MainClass

So basically, your makefile or start script needs to construct a command like one of the above.

More info - Sun docs (v6)

Update - in response to your second edit, you need to specify the full main class name, so if the class is in a package called 'com.mypackage.MainClass' then you need to do:

java -cp ./src:./jars/* com.mypackage.MainClass

I'd also suggest getting the command working as a standalone command first, before getting the whole script running. By removing moving parts it will be faster to debug and easier to see what's going on.