JDK is Oracle's distribution of Java Technology for application development. JDK 8u331 is the latest version as of April 2022. JDK requires Oracle Account for downloading older versions
Where java command displays Java.exe location using search pattern. Set JAVA_HOME command shows Java's location in PATH environment variable. Dir /b /s java.exe command lists Java executables in current directory
Environment variables store values provided by Windows environment. System variables are system-wide, user variables vary by user. System variables take precedence over user variables. Path variable combines user and system paths in order
Clear Java cache through Java Control Panel's Temporary Internet Files. Uninstall older Java version and download offline installer. Repair or fix corrupted Registry files. Edit Environment Variables to add Java executable. Perform Clean Boot to identify problematic programs
Javaw.exe is part of Oracle Java Runtime Environment (JRE). It launches Java programs and JAR files. Command is identical to java.exe but without console window
Error occurs due to incorrect command execution or Windows Environment Variables issues. Windows keeps PATH environment variable for quick program execution. Problems can arise from missing programs, registry entries, or incorrect paths