Java is a general purpose, secured, robust, object-oriented language developed by Sun Micro-systems in 1990. Java is portable which means it follows write once run anywhere paradigm. The latest version is java9 which was released on September 21, 2017. This tutorial helps you to install Java 9 or Java 8 on macOS Sierra or High Sierra. Step 1 – Prerequisites Before starting the installation of Java using this tutorial you must have the following prerequisites.
Aug 8, 2017 - Apple don't provide a version of Java greater than Java 6. You must install Java 8 from the Oracle site. In order to run Eclipse you must install.
Terminal: You must have Mac Terminal access and little knowledge about working with the terminal application. Ao login to your Mac system and open terminal.
Homebrew: This tutorial relies on Homebrew, So you must have homebrew installed. Homebrew can be installed with a single command. Ruby -e '$(curl -fsSL For more instruction visit. Step 2 – Install Homebrew Cask On Mac systems, Homebrew is the package manager, and Homebrew Cask is the app manager built on top of Homebrew. You Execute command to update brew cache and tap the caskroom/cask. Brew update brew tap caskroom/cask Step 3 – Install JAVA with Homebrew Cask Currently Java 9 and Java 8 available for installation.
Use the following commands to view the details about java versions to be install. Brew tap caskroom/versions brew cask info java8 ## For Java 8 brew cask info java ## For Java 9 (latest version) Now, install the Java version of your choice using one of the below commands. You can also install both versions if required. Brew cask install java8 ## Install Java 8 brew cask install java ## Install Java 9 (latest version) I have only installed the Java 8 on my system. The download process may take some time to complete depending on your network speed.
Once the installation finished, verify the installed Java version. Java -version java version '1.8.0162' Java(TM) SE Runtime Environment (build 1.8.0162-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.162-b12, mixed mode) All done.
Your Mac system has installed Java on it.
I'm having trouble removing Java 9 from my macOS Sierra system. I accidentally installed Java 9, instead of Java 8, so now all my Eclipse projects give me these warnings: Build path specifies execution environment JavaSE-1.8. There are no JREs installed in the workspace that are strictly compatible with this environment. I have used the, but it did not work. Here is my command output when running java -version from the command line: java version '9' Java(TM) SE Runtime Environment (build 9+181) Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode). There are two commands which are very simple and useful. If you want to keep multiple versions simply set JAVAHOME to version you want to use.
Export JAVAHOME=/Library/Java/JavaVirtualMachines/jdk1.8.0(version you want to use).jdk/Contents/Home Example- export JAVAHOME=/Library/Java/JavaVirtualMachines/jdk1.8.0161.jdk/Contents/Home Else in addition to above command remove/uninstall additional jdk version from your system with below command. Sudo rm -rf /Library/Java/JavaVirtualMachines/jdk-(version you want to remove).jdk/ Example - sudo rm -rf /Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/ Please refer below github link for additional details - Thanks.
On MacOS you can list what JDKs you have installed and where they are installed to with: /usr/libexec/javahome -V If you want to select one of the installed JDKs to be used as default, you can do: /usr/libexec/javahome -v 1.8 Verify which is now default with java -version. You can manually add the location of other installed JREs in Eclipse via Preferences / Java / Installed JREs, press Add, and then point it to one of the locations should with the -V option above. You can then check it to select which is default for your projects. Uninstall Oracle Java using the Terminal: Note: To uninstall Java, you must have Administrator privileges and execute the remove command either as root or by using the sudo tool.
Remove one directory and one file (a symlink), as follows: Click on the Finder icon located in your dock Click on the Utilities folder Double-click on the Terminal icon In the Terminal window Copy and Paste the commands below: sudo rm -fr /Library/Internet Plug-Ins/JavaAppletPlugin.plugin sudo rm -fr /Library/PreferencePanes/JavaControlPanel.prefPane sudo rm -fr /Library/Application Support/Java Do not attempt to uninstall Java by removing the Java tools from /usr/bin. This directory is part of the system software and any changes will be reset by Apple the next time you perform an update of the OS. I know that you've asked about how to uninstall the java version. But, I think it's important how to manage your Java version in a very good way. For me, the best way is using SDKMan, a very nice tool for managing you Development tools like Java. Here you can learn more about it: You can install your Java version as follow: $ sdk install java You can install others tools like Scala: $ sdk install scala 2.12.1 Uninstall your tools very easy: $ sdk uninstall java 9 And so on.
Hope this helps you in future installation of your development tools. I believe the problem is navigating to the correct directory. Once you are where you are supposed to be you can run the sudo commands to remove whichever versions of java you want to remove. First, run the command in the terminal to determine which version of Java you are running, java -version then you can navigate to pesky version of java that you intend to delete by using the following command: cd /Library/Java/JavaVirtualMachines then once you see are in the JavaVirtualMachines path, type in ls to see what versions of Java you have installed, ls and finally when you know which version or versions of Java you want to uninstall: sudo rm -rf jdk-10.0.1.jdk #or whichever version you want to delete.