The Java virtual machine provides a high-performance, universal runtime for a wealth of popular languages beyond just Java.

多年来，Java 一直是编程世界里绕不开的老面孔。从 90 年代末的企业级应用到如今的大型服务端系统，Java 凭借“写一次，到处跑”的理念，占据了无数开发者的日常。它稳定、成熟、生态庞大，但也常被人诟病——臃肿、语法冗长、速度不够快。于是，Java ...

The listing sheet, as PDF, can be found here, or as a single column portrait, while below is an unruly html rendition. This reference sheet is built from a CheatSheets with Org-mode system.