I have an old version of Java runtime environment. Do I need to uninstall it before installing new JDK?
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I have an old version of Java runtime environment. Do I need to uninstall it before installing new JDK?
No, you can have many JDKs and JREs installed in parallel. Just pay attention to
Here’s a cross-platform reference to setting these variables (but beware, some of this may be project-specific, I just couldn’t find any more canonical cross-platform document)