How to compile a package, create a JAR file and run from the command line?

Question

Java

I write on the command line:
javac ResourceTest.java
jar cvfm ResourceTest.jar ResourceTest.mf *.class *.gif *.txt
java -jar ResourceTest.jar
When ResourceTest.java does not work in a package, but works without a package. How to make it clear to the command line that ResourceTest.java is in a package?

There is one line in the manifest:
Main-Class: ResourceTest

Answer 1

To get started, run the commands separately, which one does not work, which error. "All in a bunch" is not an approach for programming.