Is there a Java equivalent of .NET's System.Version class? How do I say this in Java?
Version myVersion = new Version(2, 1);
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1What properties of the version object do you need? Just a major / minor / revision / build tuple, or the conversion to / from binary, or the comparators, or something else?Rup– Rup2012-03-27 14:06:52 +00:00Commented Mar 27, 2012 at 14:06
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Really just the major/minor tuple and comparators. I guess I could implement it myself, but was hoping for a readymade class.Jason Crease– Jason Crease2012-03-27 15:05:19 +00:00Commented Mar 27, 2012 at 15:05
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Yeah, I'm surprised there isn't one in Apache Commons or Google Guava (at least as far as I can see).Rup– Rup2012-03-27 15:18:41 +00:00Commented Mar 27, 2012 at 15:18
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3 Answers
Here's a class from OSGi: http://www.osgi.org/javadoc/r4v43/core/org/osgi/framework/Version.html
And the corresponding source: http://www.docjar.com/html/api/org/osgi/framework/Version.java.html
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To get a system/modules version e.g. String.class.getPackage().getImplementationVersion()
If you want to specify your own version, create a Manifest.txt file to be added to your jar-file as in this tutorial
See also the javadoc for Package
2 Comments
polve
But I am afraid it is just a string in the end.
Jason Crease
I ended up implementing my own Version tuple, but thanks for the links, I've been using them!
When you're using the Spring framework, you can use org.springframework.data.util.Version. It has a constructor which exactly fits your piece of code:
Version myVersion = new Version(2, 1);