Checking the version of Java, installed on a computer system, is a common task performed by developers, administrators, and users. It involves determining the specific version, build, and related information about the Java Runtime Environment (JRE) or Java Development Kit (JDK) installed on the system.
Knowing the Java version is important for several reasons. It helps ensure compatibility with specific software applications, libraries, and frameworks that may have specific Java version requirements. Additionally, it assists in troubleshooting issues related to Java-based programs and identifying security vulnerabilities or updates that need to be addressed.