– Rock Commented Mar 28, 2019 at 19:06 Up to now I'd just update one particular directory (say /usr/java/most recent) to issue on the java version I desired to use, and put /usr/java/newest/bin on my path so I only needed to do one particular update to acquire javac, java, javap, and so on (all in a single change).Sistem fisika yang realistis me