How can I make my source code with jar file?

I use JDK1.6.0. I can open a class file from rt.jar and get its source code. Does this because open source JDK? I wander how I can make my jar file with source code.

CeciNEstPasUnProgrammeur wrote:
youhaodiyi wrote:
But why I can read source code from rt.jar? I found there are only class files in it.I say it's highly likely that you can't and your IDE's settings rather automatically refer to the src.zip file in the JDK's directory.I see. That's true. I use eclipse as the source code reader. It may refer to the source code zip file automatically.
Thanks all.

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