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When I check my Java version like this: java -version I see openjdk version 1.8.0 runtime environment build ..., but I thought I had Java 8 installed. Why does the version number show up as 1.8?
Java manual download page. Get the latest version of the Java Runtime Environment (JRE) for Windows, Mac, Solaris, and Linux.
This application requires a Java Runtime Environment 1.8.0 - 1.8.0_999. Clearly, 0_202 is somewhat inbetween 0 and 999. Worth mentioning - I've installed Java manually, as I often need to switch between version 8 and 19. All I need to do is to set %JAVA_HOME% system variable.
JRE (Java Runtime Environment) provides basic/standard libraries, JVM and other basic components that run your compiled code in the machine. JDK (Java Development Kit) can be seen as an extended version of the JRE which in addition to what the JRE provides is also capable to compile your source code into byte-code understandable by the JVM ...
JRE is the Java Runtime Environment – it contains a JVM, among other things, and is what you need to run a Java program. JDK is the Java Development Kit – it is the JRE, but with javac (which is what you need to compile Java source code) and other programming tools added.
JRE (Java Runtime Environment). In Windows, Linux and Apple releases of Java this supplies the minimum selection of files needed to jun a Java program from the command line. It does not seem to exist as part of an Oracle macOs release, However this is the Java (TM) SE Runtime Environment shown by Java version.
Java Versions Explained. Java 8 is Java 1.8, where 8 is the version number, and 1.8 is the version string. These versioning names are clarified in Oracle’s article, Java Platform, Standard Edition 8 Names and Versions: In JDK 8 and JRE 8, the version strings are 1.8 and 1.8.0.
The Java Runtime Environment, or JRE, is a software layer that runs on top of a computer’s operating system software and provides the class libraries and other resources that a specific Java program requires to run.
Enable the latest installed version of Java in the Java Control Panel. In the Java Control Panel, click on the Java tab. Click View to display the Java Runtime Environment Settings. Verify that the latest Java Runtime version is enabled by checking the Enabled box. Click OK to save settings.
This version string is usually only seen by programs which query the runtime environment, or by users who invoke command line tools. Version strings have the form 1.x, or 1.x.0, where x is the product version number. In JDK 8 and JRE 8, the version strings are 1.8 and 1.8.0.