Differences between JDK, JRE and JVM

Categories: Java 8(JDK1.8)

Java Development Kit (JDK) is a software development environment used for developing Java applications and applets. It includes the Java Runtime Environment (JRE), an interpreter/loader (Java), a compiler (javac), an archiver (jar), a documentation generator (Javadoc), and other tools needed in Java development. Now we need an environment to make a run of our program. Henceforth, JRE stands for “Java Runtime Environment” and may also be written as “Java RTE.” The Java Runtime Environment provides the minimum requirements for executing a Java application; it consists of the Java Virtual Machine (JVM), core classes, and supporting files. 

1. JDK (Java Development Kit) is a Kit that provides the environment to develop and execute(run) the Java program. JDK is a kit(or package) that includes two things. Development Tools(to provide an environment to develop your java programs) JRE (to execute your java program).

 2. JRE (Java Runtime Environment) is an installation package that provides an environment to only run(not develop) the java program(or application)onto your machine. JRE is only used by those who only want to run Java programs that are end-users of your system.

 3. JVM (Java Virtual Machine) is a very important part of both JDK and JRE because it is contained or inbuilt in both. Whatever Java program you run using JRE or JDK goes into JVM and JVM is responsible for executing the java program line by line, hence it is also known as an interpreter.

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