JDK JVM and JRE in Java

Hello friends how are you, today in this blog i will teach you what is JDK ,JVM and JRE, how JDK ,JVM and JRE work  in a very simple way. 

Let's start 

Difference between JDK,JVM and JRE

• For better understanding and details knowledge of JAVA it is necessary to know the difference between JVM ,JRE and JDK.
• JVM ,JRE and JDK are the three main elements of Java because of that when you appear in a Viva or Interview it is sure that at least one question is asked from these topics.

JVM

• It stands for Java Virtual Machine.
• JVM is the virtual machine that runs on actual machine and executes Java byte code.
• It is called a virtual machine because it doesn't physically exist.
• JVM provides a runtime environment in which Java bytecode can be executed.

JRE

• It stands for Java Runtime Environment.
• It provides runtime environment for a java program.
• It is a combination of JVM and set of libraries.
• The set of library is used by JVM at runtime.

JDK

• It stands for Java Development Kit.
• It contains all the library which is used to develop and run a java application.
• It is a combination of JRE and set of development tools.

From the above diagram of we can see that JDK is a collection of JRE , JVM and development tools.

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