What do u mean by wrapper Class?
What do u mean by Jvm... How do u change JVM for other OS?
Or No need to Change ...? its like tricky

Answer Posted / srihari

Wrapper Class: Wrapper classes are classes which are used to convert primitive data types in to object and access primitive values as an objects.

JVM(Java Virtual Machine): It is used to compile java files and convert .java files to .class files.

We require different JVM's for different OS.

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