![]() Go to File | Project Structure | Project Settings | Modules. In the next dialog, specify the JDK vendor, version, change the installation path if required, and click Download. Only for JDKs: If you don't have the necessary JDK on your computer, select Add SDK | Download JDK. If the SDK is installed on your computer, but not defined in the IDE, select Add SDK | 'SDK name', and specify the path to the SDK home directory. If the necessary SDK is already defined in IntelliJ IDEA, select it from the SDK list. Go to File | Project Structure | Project Settings | Project. ![]() Only for JDKs: if you don't have the necessary JDK on your computer, select Download JDK. To add an SDK, click, select the necessary SDK and specify its home directory in the dialog that opens. Go to File | Project Structure | Platform Settings | SDKs. This folder is called an SDK home directory. It may depends on the type of O.S, processor type (i.e.To define an SDK means to let IntelliJ IDEA know in which folder on your computer the necessary SDK version is installed. Note: We Assumed that the downloaded file is named jdk-8u51-linux-圆4.tar.gz and used this name in all the commands used in steps 2, 4 and 5. Java HotSpot(TM) Server VM (build 25.51-xxx, mixed mode) Java(TM) SE Runtime Environment (build 1.8.0_51-xxx) If installation is succesful, it will display like the following: java version "1.8.0_51" Reload sytem wide PATH /etc/profile by this command: source /etc/profileĬheck Java JDK version by java -version command. Sudo update-alternatives -set javaws /usr/local/java/jdk1.8.0_51/bin/javaws Sudo update-alternatives -set javac /usr/local/java/jdk1.8.0_51/bin/javac Make Oracle Java JDK as default by this following commands: sudo update-alternatives -set java /usr/local/java/jdk1.8.0_51/bin/java Sudo update-alternatives -install "/usr/bin/javaws" "javaws" "/usr/local/java/jdk1.8.0_51/bin/javaws" 1 Sudo update-alternatives -install "/usr/bin/javac" "javac" "/usr/local/java/jdk1.8.0_51/bin/javac" 1 Tell the system that the new Oracle Java version is available by the following commands: sudo update-alternatives -install "/usr/bin/java" "java" "/usr/local/java/jdk1.8.0_51/bin/java" 1 Update PATH file by opening /etc/profile file by the command sudo nano /etc/profile and paste the following at the end of the file: JAVA_HOME=/usr/local/java/jdk1.8.0_51 To do this, cd into directory where downloaded file is located and use this command for copying that file to /usr/local/java/: sudo cp -r jdk-8u51-linux-圆4.tar.gz /usr/local/java/ĬD into /usr/local/java/ directory and extract that copied file by using this command: sudo tar xvzf jdk-8u51-linux-圆4.tar.gzĪfter extraction you must see a folder named jdk1.8.0_51. To find which version is your OS, check hereĬreate a folder named java in /usr/local/by this command: sudo mkdir -p /usr/local/javaĬopy the Downloaded file in the directory /usr/local/java. ![]() Note: download appropriate file, for example if your system is 圆4 Ubuntu (i.e, Debian) the download file is named like this: jdk-8u51-linux-圆4.tar.gz Remove OpenJDK completely by this command: sudo apt-get purge openjdk-\* ![]() You can completely remove the OpenJDK and fresh Install Oracle Java JDK by following these steps:
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