Compiling using a JAR file in the classpath

[richard rehl]

Trying to get a class to compile here, need some help. This is from SB SCJP5, Ch. 10, question 12. Given two files:

package pkg;
public class Kit {
	public String glueIt(String a, String b) {return a + b;}
}    

import pkg;
class UseKit {
	public static void main(String[] args) {
		String s = new Kit().glueIt(args[1], args[2]);
		System.out.println(s);
	}
}    

and the following sub-directory structure:

test
|--UseKit.class
|
com
|--KitJar.jar

I've compiled Kit.class and made KitJar.jar, confirmed by

jar -tf KitJar.jar
META-INF/
META-INF/MANIFEST.MF
pkg/
pkg/Kit.class

Now, here's the problem... trying to compile UseKit.java. If I'm in directory test, I thought that i would compile with

javac -cp com/KitJar.jar UseKit.java

but get the error

UseKit.java:1: '.' expected
import pkg;
^
1 error

Trying to decipher the error, it looks like the compiler can't search the current directory... so I also tried

javac -cp com/KitJar.jar:. UseKit.java

and get the same error. What am I doing wrong?

[Larry Olson]

Your import statement seems to be wrong to me.

Are you sure "import pkg;" is correct?

Shouldn't it be

"import pkg.*" or "import pkg.Kit"; or something like that?

That seems to be the error to me.

[richard rehl]

Absolutely right! Thank you!