![]() ![]() Sometimes, even if you are not planning to do any Java development on a computer, you still need the JDK installed. On the other hand, if you are planning to do some Java programming, you need to install the JDK instead. Usually, if you only care about running Java programs on computer you will only install the JRE. It is capable of creating and compiling programs. It has everything the JRE has, but also the compiler (javac) and tools (like javadoc and jdb). ![]() The JDK is the Java Development Kit, the full-featured SDK for Java. However, it cannot be used to create new programs. It is a package of everything necessary to run a compiled Java program, including the Java Virtual Machine (JVM), the Java Class Library, the java command, and other infrastructure. Contains everything required to run Java applications on your system. The JRE is the Java Runtime Environment, it covers most end-users needs. Installing this update will ensure that your Java applications continue to run as safely and efficiently as always. If you want to dive deep into Java programming and become a software developer, I recommend you to learn this Java course on Udemy.It's also integral to the intranet applications and other e-business solutions that are the foundation of corporate computing. How to write, compile and run a hello world Java program for beginners. ![]() Understand 9 features of Java programming language.Major versions were released after every 2 years, however the Java SE 7 took 5 years to be available after its predecessor Java SE 6, and 3 years for Java SE 8 to be available to public afterward.Since Java SE 10, new versions will be released very six months. From Java 6, the version name is Java SE X.This could make confusion for someone, so keep in mind that version 1.5 and version 5.0 are just two different version names for only one thing. Internal version is continuous from previous ones (1.5 after 1.4), but the external version has a big jump (5.0 for 1.5). From versions 1.5, Sun introduces internal and external versions.From versions 1.2 to 1.4, the platform is named as J2SE (Java 2 Standard Edition).Versions 1.0 and 1.1 are named as JDK (Java Development Kit).From the table above we can see that the naming and the version number have been changing over times: ![]()
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