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Java supports several devices, applications, and even websites. It is a widely used platform for developing these devices and programs. Java is operating system or device agnostic which means it does not require any specific or particular type of devices or systems. However, executing Java does need a suitable runtime environment where it can be executed efficiently and its libraries, classes, and files are available for execution. This environment is provided by JRE or Java Runtime Environment – a virtual platform for installing, executing, and operating Java. JRE includes a virtual machine that makes the system or the device compatible with Java, thereby enabling its efficient execution by providing all the necessary resources.


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Role of JRE

As stated above, Java Runtime Environment, as the name suggests, is a virtual environment that includes a Java Virtual Machine, or JVM, all the necessary classes of files, libraries, and extensions needed to execute Java based applications and websites. By providing this necessary environment, JRE ensures that there is no need to install all these elements on every device where a Java program is run. Instead, all these elements are readily available on the system if it has JRE installed on it. The Java program or the website simply needs to be executed and all the required libraries and classes are available. JRE is needed for executing Java scripts on websites, Java applets on browsers, and other types of Java based programs with a .Jav extension.

Process of Downloading And Installation

JRE can be easily downloaded from the website of the publisher. It does not require any form of licence or permission and any user can easily download it and install it on their machine. Once download, the installation process is fairly simple. Just execute the installer or the .EXE file and the installation will begin. Follow the instructions displayed on your screen and the JRE will be installed. Once installed, it runs in the background without hogging your system resource. JRE uses minimal system memory and does not affect the performance of the machine on which it is installed. It also does not clog the internet connection while providing the necessary environment for the Java applets and codes.

Key Features

JRE can be installed on any operating system and device. It supports all versions of Windows, Mac, Linux, and Android. It functions smoothly on smartphones, tabs, and computers. Thus, it is system and device agnostic. JRE also supports all the main browsers such as Google Chrome, Internet Explorer, Opera, and Firefox. Its integration with the applets on these browsers is smooth and hassle free.

Benefits of JRE for Users And Programmers

JRE is useful for both users and programmers. Since a lot of websites and programs use Java, JRE allows easy access to them. From the perspective of the programmers, it enables them to develop programs that can be accessed from any type of device, browser and machine.

JRE is a highly efficient and useful program that makes it possible to execute Java on any machine.