Does java -jar option alter classpath options

Question

I have a jar file which mentions the main class in the manifest. When I try to execute the jar using the following command

java -cp .;./* com.foo.MainClass
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Answer 1

You will need your own classloader to deal with this. -jar only respects the information in the Manifest and wildcards are not allowed there.

You might find the example of a reloadable class useful: http://www.exampledepot.com/egs/java.lang/ReloadClass.html