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Tip: after the article is written, the directory can be generated automatically. Please refer to the help document on the right for how to generate it Article catalog preface I spent four days, more than 460 lines of code,During this period, many things learned before were consolidated, such as linked lists, structures, etc.And learned ...

1, Simple use of Hystrix Create an empty Maven project and add the dependency of Hystrix in the project, as shown in the following code: <dependency> <groupId>com.netflix.hystrix</groupId> <artifactId>hystrix-core</artifactId> <version>1.5.13</version> </dependency> Write the first Hystr ...

Timer timer source code analysis One Timer 1,Timer Compared with Quartz, Timer has a relatively simple structure, its principle is easier to move, and the two will have similarities. It may be easier to understand Quartz after understanding Timer. Before Quartz, learn about Timer timer. The following is the introduction in JDK Api: The func ...

If you want to show the operation, you must first obtain the Class object, because the Class object represents various types. With it, you can get all kinds of Class information. The acquisition method is as follows: 1) Through object getClass() public static void main(String[] args) { Car car = new Car(); ...

The article keeps updating, and can pay attention to the official account. Program ape Alan Or visit Unread code blog. this paper Github.com/niumoo/JavaNotes Already included, welcome Star. This article introduces several tips for performance optimization in Java development. Although extreme code optimization is not necessary in most cases ...

Example 3: if Zhang San scores more than 90 points in the Java test, the teacher will reward him with a mobile phone, otherwise the teacher will punish him for squatting. if(javaFraction>90) { System.out.println("The teacher rewarded a mobile phone"); }else{ System.out.println("Punishment squat horse step"); } The flow chart is a ...

In daily development, it is often encountered that the foreground calls the service, then triggers a time-consuming asynchronous service, and returns the original service without waiting for the processing result of the asynchronous task. Here is a knowledge of Java asynchronous call. The following article attempts to summarize the var ...

catalogue thread I Thread usage 1. Inherit the Thread class and override the run () method 2. Implement the Runnable interface and rewrite the run method II Common methods of thread 1.       1--4 2.    5 3. 6--9  4.10--11 5. User thread and daemon thread III Status of the thread IV Synchronized 1. Thread synchronization mechanism ...

catalogue section Function: handle some elements of the list Copy list with slice How Python slicable objects are indexed Slice parameters Step: both positive and negative numbers. The absolute value determines the "step size" when cutting data, while the positive and negative signs determine the "cutting direction". P ...

Address book management system - optimized version 1, Design requirements Design a complete address book management system. The information shall at least include number, name, age, telephone number, native place, unit, etc. The functional requirements are as follows: 1. Administrator function (1) Establish address book information; (address ...