Java Cheat Sheet

JShell

jshell - Open the jshell java repl

/exit - Exits the jshell java repl

String message = "Hi, %s".formatted("Johannes") - Interpolates a string

result = employees.stream().filter(e -> !e.isActive()).count() > 0;

result = employees.stream().anyMatch(e -> !e.isActive());

    -XX:+PrintCommandLineFlags -version \
    -XX:+PrintGCDetails  \
    -Xlog:gc*=debug:file=/var/log/gc.log \

mvn versions:display-dependency-updates - Shows possible maven dependency updates

mvn versions:update-properties - Does possible maven dependency updates

mvn compile jib:build