Next, I began to learn JDK & JAVA from October to improve my knowledge. Design Pattern is a summary of the experience of predecessors in code development and a series of routines to solve specific problems. It is not a syntax regulation, but a set of solutions to improve code reusability, maintainability, readability, robustness and security.Feedback weaponization在水果江湖中，武术是最受人追捧！其中更以果宝大侠橙留香、菠萝吹雪、陆小果成立的正教最让人瞩目。三人号称果宝三剑客，在水果江湖行侠仗义，锄强扶弱，受到万民崇拜。但就在正教三周年庆祝会上，四大恶贼横空出世打败三剑客，将正教改为歪教，并四处铲除其他教派，抓捕村民，将水果江湖搅得民不聊生。Double Difference Analysis and Strategic Goal Design (STEP 1-STEP 2): BLM is a method that starts with "gap" and ends with making up for "gap". This is the main line of business strategic planning. The generation of gap comes from the expectation of the top management of the enterprise for future goals. Undoubtedly, the strategic objectives of the business line mainly come from the decomposition of the company-level strategic objective system.