java - How to update from JDK8u20 to JDK8u40? -

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i have jdk1.8.0_20 , upgrade jdk1.8.0_40. mistakenly, updated java version 1.8.0_40 thinking update jdk too, updated jre. 1 need separately download , install new jdk version , remove old 1 or should update automatically or what? i've searched , searched somehow couldn't find hint. either i'm missing , simple or it's not discussed lot. in advance.

you need install new jdk deparately have change process use new one.

as have not mentioned how using jdk bit hard know needed in general should able change java_home , path variables point newly installed jdk.

eg if using eclipse change jvm entry in eclipse.ini or change path in installed jre configuration in window/preferences.


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