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You don't actually 'update' a JRE, you just install a later one in addition to the one(s) 0-n already there
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You don't actually 'update' a JRE, you just install a later one in addition to the one(s) 0-n already there

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Why doesn't Java JRE doesn't remove itself everytime its update to new version?
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Why doesn't Java JRE doesn't remove itself everytime its update to new version?

why java JRE doesn't remove itself after having installed updates

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.