Programmer Group

1. Basic introduction of agent mode Proxy mode provides a surrogate for an object to control its access.That is, the target object is accessed through the proxy mode.The advantage of this is that on the basis of the implementation of the target object, additional functional operations can be enhanced, that is, to extend the function of the ta ...

Reading Guide There are only two substances in the world: high efficiency and low efficiency; there are only two kinds of people in the world: high efficiency and low efficiency.--Shaw Constant-Variable Assigning constants directly prohibits declaration of new objects Assigning a constant value directly creates an object reference that points t ...

Timing task is a common function. In some cases, you need to restart or reset the Scheduler Job, but the official API does not provide a method similar to restart, so how to complete this requirement? Spring Quartz Spring Quartz(http://www.quartz-scheduler.org/documentation/ )It is a complete set of Cron Job architecture, which can complete com ...

Note: Based on jdk11 java provides 8 basic data types, including 1 Boolean type, 6 numeric types, and 1 character type.jdk also provides corresponding encapsulation types for the eight basic data types. boolean & Boolean boolean 1 bit in length Data Range: Only two values true, false Default value is false Boolean Encapsulation type ...

jdk1.8 new feature knowledge points: Lambda expression Stream API Functional interface Method references and constructor calls Default and static methods in the interface New time date API default   Lambda expression Lambda is to simplify some of our previous complex codes, such as the judgment and comparison / sorting of colle ...

As a common design pattern, singleton pattern is not repeated here. There are nine ways to implement singleton mode, but some of them are defective. In summary, there are four types: 1, Starved Han model /** * @ClassName: Singleton2 * @description: Singleton mode - starved mode (thread safe, but not resource efficient) * @author: edison_Kwok ...

aggregate ——Collection is a container provided by java, which can be used to store multiple data. The difference between set and array The length of the array is fixed. The length of the set is variable. The array stores elements of the same type, which can store basic data type values. Collections store objects. And the ty ...

HashTable Source Analysis For more resources and tutorials, please pay attention to the Public Number: Non-subject classes.If you think I can write, please give me a compliment. Thank you, your encouragement is the power of my creation.####1. PrefaceHashtable is an old-fashioned collection class that was born as early as JDK 1.0 ####1.1. Sum ...

This blog series is a summary of the learning process of concurrent programming.Because there are many articles and the writing time is scattered, I organized a catalog paste (portal) for easy reference. Concurrent Programming Series Blog Portal Preface As mentioned in previous articles, JMM is a reflection of the memory model specification in ...

Foreword: Recent project of combining kafka and zookeeper containerization with rancher, I consulted related websites and books and found that there are many reasons why I chose to customize it if it is relatively strong to standardize the company. Let me briefly talk about the reasons why I chose to customize it finally: (Because k8s+kakfa te ...