what jre does in java code example

Example 1: WHAT IS JRE

Java Runtime Environment :
	It physically exists. 
	The Java Runtime Environment provides
    the minimum requirements such as libraries
    and Class Loader for executing a 
    Java application on JVM. 
	It consists of the Java Virtual Machine
    core classes, and supporting files.

Example 2: jre in java

Java Runtime Environment : JRE is what we need to run a Java program 
and containsset of libraries and other files that JVM uses at run time. 
JRE = JVM + Library Classes

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