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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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boutiqueJava 9 to Java 17
Java 17 is one of the most important LTS releases of Java, but the direct transition from Java 8 to Java 17 is too long.
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boutiqueGet file path in java
1. Introduction In Java development, we often need to obtain the path of a file, such as reading configuration files, etc. Today we will...
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boutiqueFrom Java 9 to Java 17 to Java 12
There are not many features that are useful to developers in Java 12, but it is still useful.
String enhancement
Java ...
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boutiqueJava Collection Collation Interface Comparator
1. The preface recently used set sorting (based on Java 8). Now I use Stream whenever I can,...
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boutiquePeek operation in Java 8 Stream Api
1. Preface I described the map operation in the Java 8 Stream API in the detailed usage guide of the Java 8 Stream API...
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boutiqueWould you rather know introspection if you only know java reflection?
1. Foreword In the previous article, we encapsulated a Mybatis universal Mapper. To get entity class attributes, I used...
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boutiqueSkip and limit operations in Java 8 Stream Api
1. preface
The skip () and limit () methods in the Java 8 Stream API have similar effects. They all...
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boutiquePrinciples of Vernacular Design Models
Why design patterns are needed
In fact, we can complete the development work without a design pattern. But why design...
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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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boutiqueHow to determine whether a string is a number in java
preface
Numbers are often represented and conveyed in strings in some fields. So how do we determine a string...
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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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