Checking the Java version on Linux involves determining which iteration of the Java Runtime Environment (JRE) or Java Development Kit (JDK) is installed on a Linux system. This information is crucial for developers, system administrators, and users who need to ensure that their Java applications run on a compatible version of the platform.
There are several methods to check the Java version on Linux, each with its own advantages and use cases. These methods include using the “java -version” command, checking the output of the “javac -version” command, examining the contents of the “/etc/alternatives/java” file, and inspecting the Java installation directory.