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boutiqueSummary of core knowledge of java annotation
1. preface
A few years ago, our project was still running on structs 2, and once I asked a colleague if he knew
Spring...
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boutiqueMap and flatMap operations in Java 8 Stream Api
1. preface
Java 8 provides a very easy-to-use Stream API that makes it easy to manipulate collections. Today we come...
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boutiqueWhen calculating in Java development, please be sure to use BigDecimal to calculate. BigDecimal summarizes and summarizes
Preface Today, a junior developer in the group asked why the tester tested that the price calculation module he wrote had calculation deviations...
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boutiqueSharing tips for java enumeration
1. Introduction Java enumerations are very useful in development. Today, let's analyze a few tips and answer some students 'questions...
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boutiqueUnder what circumstances cannot Java generics be used
1. Introduction Java 1.5 introduces generics to ensure type safety, prevent type conversion exceptions at run time, and allow classes to...
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boutiqueDetailed usage guide for the Java 8 Stream API
1. overview
An important feature introduced by Java 8 is undoubtedly the Stream API. Stream translates as "stream"...
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boutiqueSharing some practical skills for Java ServletRequest
1. preface
ServletRequest is a Servlet Api that we often come into contact with when working on Java Web. Sometimes I...
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boutiqueJava random number traps
preface
We should be familiar with random numbers. We use them to generate Captcha in business, or we have low requirements for repeatability...
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boutiqueFull analysis of Collectors in java8
1. The preface mentioned Collectors in an article about Collection removal elements yesterday. Believe a lot...
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boutiqueFutureTask 2 in Java
1. The first two chapters of the preface briefly analyze the Future interface and FutureTask. This article will introduce the use of FutureTask...
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boutiqueInterpretation of the 2020 JVM Ecosystem Report
1. Foreword The 2020 JVM Ecosystem Report has been released. The report was produced by British software security service provider Snyk and Ora...
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boutiqueJava enumerates implement state machines to streamline your state change logic
preface
I believe that many java developers have written about status changes, such as order processes, leave processes, etc. Generally...
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boutiqueResponsibility Chain Model of Design Model
preface
Many frameworks such as mybatis plug-ins, servlets filter, dubbo, security frameworks such as Spring sec...
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boutiqueDesign pattern: Talk about strategic pattern from the design of aggregated payment services
1. preface
Mobile payment is now very popular in China, and even the seventies-year-old lady at the breakfast stall downstairs uses it...
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