The Java Runtime Environment (JRE) must be installed in order to open executable JAR files, but note that not all JAR files are executables.
Oge arụmọrụ Java (JRE) ga-arụ ọrụ iji mepee faịlụ JAR ejiri ya, ma rịba ama na ọ bụghị faịlụ JAR nile ka a na-eme.