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Confusion in JRE, JVM and JDK

 
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Hi,

I want to the basic difference between JRE & JVM. If the question seems to be funny or wrong, just explain what is JRE, JDK, JVM and how are they related.

If I am installing JDK, the JRE will automatically be installed or we have to install the JRE separately?
 
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Search this forum (and in Java in General -intermediate & Advanced forums) with "difference JVM JRE" as the search words. You will get enough information on this topic.
 
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or just read the official documentation from Sun.
But why think for yourself, right?
 
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