Which one do I need: JVM or a JRE or a JDK?įirst let's understand each term and what does it stand for: Let's walk through the process of downloading and setting up Java environment on MAC. JAVA_HOME is used for setting up the environment variable which points to the location where JDK or JRE is installed. Java IDEs are developed for making the process of building any java application much faster and easier. IDEs are basically used for writing code in a much more efficient manner. Setting up Java Home and IDE are essential to run and develop java programs. Java can be used to develop mobile apps, web apps, games and much more. Java is class-based, object-oriented programming language and is platform-independent and can run on a variety of platforms, such as Windows, MAC OS, Linux, etc. It was developed by James Gosling at Sun Microsystems Inc in the year 1991. Java is the name of an island in Indonesia where the first coffee(named java) was produced. Java was finally chosen because of its uniqueness. The new options were Silk, Java, Dynamic, DNA, Jolt and Revolutionary. However, in the wake of OAK technologies, the development team decided to rename it. Java was initially called by the name: OAK. Java is one of the most popular and widely used programming languages. Java 8, 11 and 17 are the current long-term support (LTS) versions. JAVA_HOME is an operating system environment variable which is used for setting the file system location where the JDK or JRE is installed. JDK is full-featured Java Development Kit which includes development tools to provide an environment to develop Java applications and Java Runtime Environment to execute our programs. Java IDEs are the IDEs that are developed for making the process of building any java application much faster and easier. In summary, if you are trying to figure out where JAVA_HOME is on your Mac OS X system, I hope this has been helpful.An Integrated Development Environment (IDE) is a software that acts as a text editor, debugger, and compiler all in one. You might also be able to find some of these settings in the Mac OS X Control Panel, but I looked just now, and did not see them (though you can see Java's "temporary internet files" from that console). If you have XCode installed you can now find the JAVA_HOME directory with this command: I have no way of verifying this any more, but on Mac OS X 10.5, 10.6, and 10.7, I'm pretty sure this is where the JDK JAVA_HOME was located: Library/Internet\ Plug-Ins/ugin/Contents/Home/bin/java -version Older Mac OS X systems This is confirmed by this Oracle Java/JRE documentation page, which shows that you can demonstrate this by running this command in the Mac Terminal: Library/Internet Plug-Ins/ugin/Contents/Home If you've installed the Oracle JRE (as opposed to the JDK), JAVA_HOME for it appears to be located here instead: Of course that will vary by the JDK version you have installed. Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/ Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home This has changed over time, but if you're using Mac OS X 10.9 or newer (now macOS), your JDK/SDK JAVA_HOME location for Java 8 will be something like this: Java/Mac FAQ: Where is JAVA_HOME located on Mac OS X (macOS) systems? macOS JDK location
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