Compiling and running java program with other programs on build path

Question

I'm having trouble getting my program to run in the command line. projectA has projectB and projectC on the build path.

I run this command:

javac -cp "projectB/src/":"projectC/src/" path/to/projectA/src/packagename/Program.java

This compiles fine. All the .java files in projectA, projectB, and projectC compile into .class files. However, when I run the command:

java -cp "projectB/src/":"projectC/src/" path/to/projectA/src/packagename/Program

I get the following error:

Error: Could not find or load main class path.to.projectA.src.packagename.Program

I have tried running the java command with many different derivatives of the -cp, paths, and from different working directories. Thanks for the help!

ravthiru · Accepted Answer · 2016-10-20 00:26:08Z

2

You need to have proper class path of projectA

java -cp "projectB/src/":"projectC/src/":"path/to/projectA/src" packagename.Program

answered Oct 20, 2016 at 0:26

ravthiru

9,7412 gold badges51 silver badges57 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

We provided the answer simultaneously, I'll +1 to share the love :)

alexbt · Accepted Answer · 2016-10-20 21:54:10Z

1

With your command, javac thinks that the package is path/to/projectA/src/packagename/Program

You need to specify the fully qualified name (packagename.Program) and add the path in your classpath:

java -cp "projectB/src/":"projectC/src/":"path/to/projectA/src" packagename.Program

answered Oct 20, 2016 at 0:25

alexbt

17.2k6 gold badges81 silver badges89 bronze badges

Thanks! That did it.