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Java Interview Questions
Question 1
Q.1 What do you know about Java ?

Java is a high-level programming language originally developed by Sun Microsystems and released in 1995. Java runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX.
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Question 2
Q.2 What are the supported platforms by Java Programming Language ?

Java runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX/Linux like HP-Unix, Sun Solaris, Redhat Linux, Ubuntu, CentOS, etc.
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Question 3
Q.3 Name any five features of Java?

Some features of java include Object Oriented, Platform Independent, Robust, Interpreted, Multi-threaded etc.
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Question 4
Q.4 What is difference between JDK, JRE and JVM ?

JVM is an acronym for Java Virtual Machine, it is an abstract machine which provides the runtime environment in which java bytecode can be executed. It is a specification.
JVMs are available for many hardware and software platforms (so JVM is platform dependent).

JRE stands for Java Runtime Environment. It is the implementation of JVM.

JDK is an acronym for Java Development Kit. It physically exists. It contains JRE + development tools.
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Question 5
Q.5 What is platform ?

A platform is basically the hardware or software environment in which a program runs. There are two types of platforms software-based and hardware-based. Java provides software-based platform.
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