The Plug-in cannot be downloaded as a standalone program. JRE also comes with a Java Plug-in which is required to run some of the applets written in the Java programming language in various web browsers. The JRE is a collection of tools, namely the Java Virtual Machine (JVM), Java platform classes and other supporting platform libraries. When you download Java software from the official website, you get the Java Runtime Environment (JRE) which is the runtime component of Java software and the only thing that you will need to run Java on your web browser. In present times Java is used in a wide variety of places such as laptops, game consoles, cell phones, internet and even supercomputers. Many of the websites won't work unless you have Java installed and many new ones are also being created every day.
Since then, it has become widely popular with programmers for building websites and application. Java Runtime Environment or more popularly known as Java is a programming language and a computing platform.
