To regenerate the class file in injarBin\pkg:
javac origInpathClass\InpathClass.java
and copy it to injarBin\pkg.
To regenerate the class copied over as part of the test:
javac newInpathClass\InpathClass.java
To regenerate the jar file base\inpathJar.jar
javac origInpathClass\InpathClass.java
cd origInpathClass
jar cf inpathJar.jar InpathClass.class inpathResource.txt
copy resultant jar file to ..\base