The info on how to set the environment variables I took from this guide. Now you should be able to run java.exe from the cmd. (Speaking about a Windows machine) You also need to put the \bin folder of the JDK as the first folder in the Path environment variable, like this: Path=%JAVA_HOME%\bin other folders here This means that once you download the JDK, you can have the JAVA_HOME environment variable point to the JDK folder, like this: JAVA_HOME=\path\to\jdk-12 Help you develop, execute, debug, and document programs written in the Installing a JDK will also install the Java Runtime Environment (JRE). This directory also includes tools and utilities that will You need a Java Development Kit (JDK) to develop and compile Java applications. Support the execution of programs written in the Java programming The JRE includesĪ Java Virtual Machine (JVM™), class libraries, and other files that 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). Implementation of the Java Runtime Environment (JRE). Java Development Kit (JDK) To develop applications in IntelliJ IDEA, you need a Java SDK (JDK). In the JDK 12 Readme you will find the following: You likely are not pointing to the correct location within the JDK12 installation directory. The only reason you cannot run the java command inside a command prompt is due to a system variable issue. The equivalent version of Java SE Runtime Environment 8 is the Java SE Development Kit 12.0.1. The Oracle JDK license changed with the release of Java 10. I couldn't find a fitting JRE (like JRE 12 or so). Everything that you needed was installed by the Java SE Development Kit 12.0.1. You already have the Java Runtime Environment installed. Where can I get the JRE 12 or however what it's called now? The Java Runtime Environment (JRE) has always been included in the Java Development Kit (JDK). The only way you would be able to compile software is if you had the java runtime environment installed. This way you can have multiple instances of Java Runtime Environment installed and point to the version the project should use. In my experience IntelliJ uses it's own implementation to determine the location of the Java bin location. The JDK seems to be enough when I work within IntelliJ, but I cannot run the java command inside the cmd.
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