Run from command line, Wrong Name error

Question

I want to run a Java project from the command line which I start using a batch file, but I get the wrong name error.

The directory setup:

• srcMVC
  <

Answer 1

java bin/main.Main is wrong, you must specify -cp here:

java main.Main -cp bin

Here the first argument is the class name which should be found in the classpaths, rather than the class file location. And -cp just adds the logical path to classpaths. You should make the root of your project searchable in the classpath.

and for those javac commands, you have already specified the correct path, so you don't need -cp src. The difference here is the javac command uses logical path for .java files, while using java command you could only specify the path in -cp attribute.

You could also execute java main.Main without -cp if you enter the directory bin:

cd bin
java main.Main

Since the current path will be automatically be searched by java as a classpath.