java - When JRE is a subset of JDK, why do we have to download JRE separately in a PC? -

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when jdk includes jre execution of code, why have download jre separately execute java code doubt that's bothering me

as far remember depends on os, browser , jdk version.

eg. if you're using 64-bit os , installed 64-bit jdk, using 32-bit browser, might have install 32-bit jre if need java support in browser.

otherwise separate jre installation should not required, since jdk installation installs jre.


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