JDK, JRE, and JVM

Some of the essential elements of the development and execution of Java applications in a system is done by JDK, JRE, and JVM. All these elements are distinctively interrelated to one another.

Table of Content

One of the oldest programming languages in the world is the Java programming language. It is one of the most reliable programming languages that is quite popular around the world. In the world of market development, Java plays a very crucial role. To become a good and successful developer, Java is one of the most important features. It helps an individual to use and explore programming languages more elaborately. One of the major reasons behind the increasing demand for such language is the security that it guarantees, along with its versatility. It is used to develop many software- telephonic and websites, Desktop programmers, gaming applications, cloud applications, etc. The nature of code in Java is modular, which makes it readable and comprehensively easily- when compared to other programming languages. Java helps in building safe, secure, strong, and scalable websites and applications. As discussed above, Java is a high-ended programming language. Therefore, a program or a software or an application developed with this high ended programming language cannot be directly and completely executed in any machine. Hence, initially, it must be translated or converted into other readable and simpler machine language for the execution of the software or application, or program. Therefore, JDK, JRE, and JVM play an essential role here. These elements of programming help in executing high-ended Java Programming into a system. Let us discuss each one of these elements and the distinction between these elements, briefly.

JDK

JDK means Java Development Kit. Java Development Kit is a software development kit used for Java and other applications. It is a package of software that helps in the execution and compilation of Java Programs. It has a physical existence. That means, when installed on a computer it is possible to see it in the Java installation directory. One cannot, technically, use Java programmers without JDK,if the programs are not compiled already. These kits have all the JRE development tools. It is possible to create more than one version of this kit in a system. This Kit includes both JRE and JVM.

JRE

JRE means Java Run-time Environment. It is primarily used for the implementation of JVM software in a system. It is principally made up of Java Binaries and other classes which are used to execute programs. This software includes Base libraries for JVM and other functionalities, deployment technologies, and user interfaces. JRE cannot develop or compile Java programs. In simple words, JRE is used for running JAVA Programs in a system. It provides the system with the minimum requirements or environment needed for the execution of a Java program in a system. JRE is commonly known as Java RTE.

JVM

JVM means Java Virtual Machine. It is an abstract machine that provides specifications regarding the runtime environment through which bytecode can be executed. JVM is platform-dependent, that is, it requires a hardware or software platform for performance. JVM loads, verifies and executes code while clearing the runtime environment. This machine provides a register set, class file format, memory area, and others for the proper execution of Java. JVM also helps in optimizing the program memory. Therefore, JDK, JRE, and JVM are interrelated. However, they are distinct from one another in several ways. Let us look at the distinction between JDK, JRE, and JVM.

Difference

JDK	JRE	JVM
JDK stands for Java Development Kit	JRE stands for Java Runtime Environment	JVM stands for Java Virtual Machine
It is platform-dependent	It is platform-dependent	It is platform-independent
It is primarily responsible for executing Java Codes	It has the responsibility of creating an environment for the execution of codes	It has the responsibility of specifying all the implementations
It is possible to create more than one version of this kit in a system, this Kit includes both JRE and JVM	It provides the system with the minimum requirements or environment needed for the execution of a Java program in a system	JVM loads, verifies and executes code while clearing the runtime environment
It consists of tools for developing, managing, monitoring, and debugging several Java Codes	It consists of several class libraries and the supporting files which are required by the JVM	It does not include the tools for the development of software

Conclusion

Java plays a very crucial role. It helps an individual to use and explore programming languages more elaborately. One of the major reasons behind the increasing demand for such language is the security that it guarantees, along with its versatility. JDK, JRE, and JVM help in executing high-ended Java Programming into a system. JDK stands for Java Development Kit. Java Development Kit is a software development kit used for Java and other applications. JRE stands for Java Run-time Environment. It is primarily used for the implementation of JVM software in a system. JVM stands for Java Virtual Machine. It is an abstract machine that provides specifications regarding the runtime environment through which bytecode can be executed.