如何在Windows命令行中使用Java类路径？

Question

I have created a java source file in Source folder and also created a folder named classes which is supposed to contain my class files .

javac -d classes Source/TestMyAnnotation.java

puts my files in the directory structure classes/Source/...

Now I want to run that compiled classes but

java -cp classes/Sources TestMyAnnotation

throwing NoClassDefFoundError Where am I doing wrong? How to do it in a correct way?

Answer 1

Sources is not a package folder; it's just the directory that holds your java source, so you don't need to put it on your classpath. If you take a look inside your classes directory after you have compiled your java source, you will see a file TestMyAnnotation.class - there's no Sources directory underneath it, so you don't specify it on the classpath.

You will be able to run your class like this:

java -cp classes TestMyAnnotation

You can find more information on how all this works on Oracle's Managing Source and Class Files Page