Can't run anything with an import statement

Question

That seems to be what's going on, anyway. HelloWorld works for me, but ECJ (http://cs.gmu.edu/~eclab/projects/ecj/) does not. NoClassDefFoundError when I try to run the thing, even though . is on my classpath and I'm in that directory (and yes, it's compiled), but (this is weird), with .. on my classpath, running ec.Evolve works for me from ec\, and being in ecj\ and running ec.Evolve works for me, but not being in ec\ and just running Evolve. C:\Documents and Settings\Nikola Tesla\Desktop\ecj\ecj\ec>java -classpath . Evolve throws a NoClassDefFoundError (I have . on my CLASSPATH, but I thought that I'd double-check). There are no .jars anywhere. I've talked to someone else who can run ECJ just fine, and he just has . on his CLASSPATH. Everything that I've seen makes me think that this is a CLASSPATH proble]m, but mine looks fine to me (unless . isn't the current directory). Help? XP, JDK1.6.0_01. I've found several people saying that they got a NoClassDefFoundError on HelloWorld, but only one person saying that they could run that but not anything that imported anything, there was no solution, and that thread is in an archived forum.
e: Oh, and I forgot: javac *.java works for me, but javac *\*.java does not. It looks like my classpath isn't recursive, but I was under the impression that, for directories and not .jars, they are.
Message was edited by:
Schizoguy

Answer 1

Apologies for the messed up formatting. Sun took away some of the goodies after some dickole exploited them, and I'm too lazy to clean up my stock answers at the moment.
Javapedia: Classpath
How Classes are Found
Setting the class path (Windows)
Setting the class path (Solaris/Linux)
Understanding the Java ClassLoader
java -cp .;<any other directories or jars> YourClassNameYou get a NoClassDefFoundError message because the JVM (Java Virtual Machine) can't find your class. The way to remedy this is to ensure that your class is included in the classpath. The example assumes that you are in the same directory as the class you're trying to run.
javac -classpath .;<any additional jar files or directories> YourClassName.javaYou get a "cannot resolve symbol" message because the compiler can't find your class. The way to remedy this is to ensure that your class is included in the classpath. The example assumes that you are in the same directory as the class you're trying to run.