It's also integral to the intranet applications & other like - E-business solutions that are the inspiration of corporate computing. Installing this update will make sure that your Java applications/program still runs as safely & efficiently as always.
Java Runtime Environment
The JRE is that the Java Runtime Environment, it covers most end-users needs. Contains everything required to run Java applications/program on your operating system. it's a package of everything necessary to run a compiled Java program, including the JVM (Java Virtual Machine), the Java Class Library, the java command, and other infrastructure. However, it can't be wont to create new programs.
Learn complete What is Java Runtime Environment and Architecture of JRE
Java Development Kit
The JDK is that the Java Development Kit, the full-featured SDK for Java. it's everything the JRE has, but also the compiler (javac) and tools (like Javadoc and JDB). it's capable of making and compiling programs.
Usually, if you simply care about running Java programs on the computer you'll only install the JRE. It's all you would like. On the opposite hand, if you're getting to do some Java programming, you would like to put in the JDK instead.
Sometimes, albeit you're not getting to do any Java development on a computer, you continue to need the JDK installed. for instance, if you're deploying an internet application with JSP, you're technically just running Java programs inside the appliance server. Why would you like the JDK then? Because the appliance server will convert JSP into Java servlets and wishes to use the JDK to compile the servlets.
Learn complete What is JVM and JIT.