Chapter 6 Object-Oriented Basis (Part 2)
Chapter 6 [Object-Oriented Foundation - Medium] Teaching Objectives Understanding the concept of encapsulation Master the use of permission modifiers Master privatization of member variables Master the declaration and use of constructors Will declare standard JavaBean s Ability to write out inhUTF-8...
Posted by goleztrol on Mon, 17 May 2021 08:30:55 +0930
JavaSE-Chapter 10 [Basic API s and Common Algorithms]
Chapter 10 Basic API s and Common Algorithms Learning Objectives Understanding math-related API s Understanding Date Time API Understanding System Class API s Master Array Basic Algorithms Master the use of array tool classes Master String API Familiar with StringBuilder and StringBuffer API s UTF-8...
Posted by iconicCreator on Tue, 18 May 2021 07:45:22 +0930
HashMap(JDK1.8) specifies the initial capacity
Before reading this article, do you think that the size specified when initializing the HashMap object is the capacity of the HashMap( If you ask, there must be a ghost~ 😃😃😃😃) HashMap map = new HashMap(12); HashMap map = new HashMap(2); HashMap map = new HashMap(4); What are theUTF-8...
Posted by jantheman on Wed, 26 May 2021 03:24:26 +0930
Recent studies on current limiting and RateLimiter
Preface In a distributed environment, there are several strategies to ensure the stability of services due to high concurrency. As a personal understanding, the priority ranges from high to low, which are caching, stream limiting, downgrading, and fusing. Each has its own role. This article focUTF-8...
Posted by Lessur on Sat, 12 Jun 2021 03:30:33 +0930
Bubble sort must be understood
Find out what bubble sort is. Bubble sort is the same as quick sort. In n elements, compare the subscript data of J and j+1 by traversing and comparing each time. If it does not conform to the sorting rules, exchange n times, and compare each time from the beginning. That is to compare each othUTF-8...
Posted by emceej on Wed, 16 Jun 2021 06:19:42 +0930
JUC concurrent programming
1, Thread and process 1. What is a process / thread? Process: a process is a running activity of a program with certain independent functions about a certain data set. It is the basic unit of operating system dynamic execution. In traditional operating system, process is not only the basic allUTF-8...
Posted by KenGR on Wed, 30 Jun 2021 06:09:15 +0930
javaSE foundation -- comprehensive analysis of notes
English words 1, Container definition It can be simply understood as a box or box containing things. It is a structure used to store elements, including variables, arrays, objects and containers. For details, see below 1.1 container inheritance system The Collection interface is the root levelUTF-8...
Posted by lottos on Mon, 12 Jul 2021 03:41:02 +0930
[JUC] Learning about the principles and uses of LockSupport
1. What is LockSupport LockSupport is a class under the java.util.concurrent.locks package.LockSupport is visible everywhere in the underlying implementation of various synchronization components under Java Concurrent packages.Thread blocking primitives defined in JDK to create locks and other UTF-8...
Posted by dreglo on Tue, 13 Jul 2021 04:50:21 +0930
sz small array
Questions raised In Java, how to allocate memory in the process of declaring an array?What are the initialization methods of java array?Is there any difference in memory allocation mechanism between basic type array and reference type array during initialization? Initialization of array Static UTF-8...
Posted by atyndall on Tue, 13 Jul 2021 06:19:29 +0930
java Foundation (20) (thread pool, wait and wake mechanism, volatile keyword, singleton design pattern, lazy mode, hungry mode)
Communication between threads Communication between threads? Multiple threads are processing the same resource, but the processing actions (thread tasks) are not the same. Why deal with inter thread communication When multiple threads execute concurrently, the CPU switches threads randomly by UTF-8...
Posted by testtesttesttest on Sat, 17 Jul 2021 07:19:05 +0930