Writing an Alternative Alternative Java Class Library from scratch

Question

I'm just curious, but I want to know if it is possible to completely remove the standard Java class libraries that come with the JVM and start a new one from scratch [à la ClassPath].

If possible, which classes MUST be implemented at least? (The object and the string come to my mind, but ... I do not know).

Does such a thing violate the license? Is there a way to tell the java command not to use rt.jar?

Thanks in advance,

Ernesto

Answer 1

You can use the -Xbootclasspath option to specify your own set of core classes.

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Answer 2

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Answer 3

No, that’s not possible at all. I mean, of course, you could do it, but you won’t do it better than a large corporation or an open source project with many years of experience and lots of Java gurus. It might be interesting to fish him out though.