用包执行类文件？

Question

In general, how can one execute a .class file through powershell/command prompt that contains packages in it? I'm still having trouble with that. Assume the file is ClassFile.class , with the package called Pack and the class file's location in C:\\Program Files\\Folderhere\\ClassFile.class .

Answer 1

If the class is in a package called Pack then you'd do

java Pack.ClassFile

Have you copied the compiled code around at all, moving it from one directory to another? If you have, it's important to maintain the directory structure that it was originally compiled into.

If I was writing some code in a package and compiling and running it, these are the steps I'd take. Assume we've cd'd to a clean directory first.

mkdir Pack
vi Pack/ClassFile.java
javac Pack/ClassFile.java
java Pack.ClassFile