Yesterday, I learned from the basics and started to do HelloWorldApp. After Javac HelloWorldapp.java passed, how can Java HelloWorldApp can pass, appear: Exceptionin MAIN (): classnotfound ......................
In the environment variable, it is also changed, and it is ClassPath. It took a long time, and finally finally did it. Should be classpath = .; c: / jdk / .....
The front ";" indicates that in the current directory.