![]() ![]() You can also configure external documentation by specifying the path to the reference information online. You can add SDK documentation to IntelliJ IDEA so that you can get information about symbols and method signatures right from the editor in the Quick Documentation popup. In the next dialog, specify the JDK vendor, version, change the installation path if required, and click Download.Ĭlick Apply to save the changes and close the dialog.įor more information about working with JDK, refer to Change the JDK version in a Maven project and Gradle JVM selection if you build your project with Maven or Gradle. If you don't have the necessary JDK on your computer, select Add SDK | Download JDK. If the JDK is installed on your computer, but not defined in the IDE, select Add SDK | JDK, and specify the path to the JDK home directory (for example, /Library/Java/JavaVirtualMachines/jdk-12.0.1.jdk). If the necessary JDK is already defined in IntelliJ IDEA, select it from the SDK list. If you don't know which distribution to choose, and you don't have specific requirements that instruct you to use one of the existing distributions, use Oracle OpenJDK. In IntelliJ IDEA, you can download a JDK package right from the IDE, or you can manually download the necessary JDK distribution and define it in the IDE.įor a manual download, use any available distribution that you like, for example: We recommend that you use one of the OpenJDK builds to avoid potential compliance failures. ![]() ![]() Before you start developing in Java, download and install a standalone JDK build.ĭue to the changes in the Oracle Java License, you might not have the rights to use Oracle's Java SE for free. The bundled JRE is used for running the IDE itself, and it is not sufficient for developing Java applications. The JRE can be obtained separately from the JDK, but it is not suitable for application development, as it doesn't have essential components such as compilers and debuggers. A JDK is a software package that contains libraries, tools for developing and testing Java applications (development tools), and tools for running applications on the Java platform (Java Runtime Environment – JRE). To develop applications in IntelliJ IDEA, you need a Java SDK (JDK). If you want a module to inherit a project SDK, select the Project SDK option from the Module SDK list. If the necessary SDK is already defined in IntelliJ IDEA, select it from the Module SDK list. Select the module for which you want to set an SDK and click Dependencies. 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. Warning: The links /usr/lib/jvm/default and /usr/lib/jvm/default-runtime should always be edited with archlinux-java.To define an SDK means to let IntelliJ IDEA know in which folder on your computer the necessary SDK version is installed.
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