JAVA

• Updating default Java executables with new executables

  # update-alternatives --install <symlink of java executable> <config_name> <newer java binary> <priority>
  

  Usage :

  # update-alternatives –install “/usr/bin/java” “java” “/usr/java/default/bin/java” 3

  # update-alternatives –install “/usr/bin/javac” “javac” “/usr/java/default/bin/javac” 3

  # update-alternatives –install “/usr/bin/javaws” “javaws” “/usr/java/default/bin/javaws” 3