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Editorial Team
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Asked: 2026-05-31T05:15:36+00:00

I’ve inherited some code which makes extensive use of setting java system properties. I’m

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I’ve inherited some code which makes extensive use of setting java system properties. I’m curious where in the file system this is stored and if there is a way to read it in plain text. I’m using Mac OS X Snow Leopard and I’ve found some idx files that look to be binary, but I’m not terribly familiar with the internals of Java’s system properties. Is there a specific place the JVM stores a file containing its system properties?

EDIT: I was mistaken, I apologize. The code is is using preferences, not properties. On Mac OS X Snow Leopard [at least], these preferences are stored in ~/Library/Preferences.

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1 Answer

  1. Editorial Team

    The implementation of Java Preferences is platform dependent. On Linux, it is stored in the user home directory. On Windows, it is stored in the Registry. You should use the Java API to access them. And I am not even sure that different JVM cannot choose different implementation on the same platform.

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