Java

Textbook Knowledge Summary seventh Chapter inner class and Exception class Inner class: A member of a class Outer-Nested classes: Classes that contain inner classes are called outer-nested classes of inner classes The

1. What is the B/s structure? What is the C/s architecture b/S (browser/server), browser/server program c/S (client/server), client/server, desktop applications2. What do you know about network protocols?HTTP: Hypertext Transfer

20165103 2017-2018-2 "Java Program Design" 3rd week Study summary Textbook study summary Learn about several stages of programming language development: for machine language (e.g. assembly language)-for procedural languages (e.g. C)-object

20165235 Qi Ying 2018-3 "java program design" The third week of learning summarize the contents of learning Content Summary class and Object Learning Summary Class: Java has three features as an object-oriented language: ① encapsulation. ② of

What is a mutable parameter Variable-length parameters are provided in Java 5, allowing for the passing of indefinite lengths of parameters when invoking a method. The variable-length parameter is a syntactic sugar in Java and is

First, the object-oriented five basic features:1. All things are objects. treats an object as a peculiar variable, he can store the data, and can require it to perform operations on itself.2. A program is a collection of objects that they tell each

20165314 2016-2017-3 "Java Program Design" 2nd week study summary Textbook study summary Byte Break is jumping out of all loops, continue is jumping out of the current loop Nextxxxxx blocking during execution, waiting for confirmation

Concurrent Series Reference article http://www.cnblogs.com/skywang12345/p/3323085.html#3907193Synchronized principleIn Java, each object has and has only one synchronization lock. This also means that the synchronization lock is dependent on the

Immutable classes: When an instance of this class is created, the value of its member variable cannot beAdvantages:1. The value of the thread-safe object cannot be changed, reducing the likelihood of concurrency errors2. High efficiency when an

The Equals method in the object class is used to detect whether an object is equal to another object. In the object class, this method will determine whether two objects have the same reference. If two objects have the same reference, they must be

Principle of drawing (1)The Component class provides two of the most important methods related to drawing:1, paint (Graphics g) to draw the appearance of the component2. repaint () refreshes the appearance of the componentWhen the component is first

Full parsing of String object data types in Java and full parsing of string1. First, String does not belong to eight basic data types. String is an object.Because the default value of an object is null, the default value of String is also null, but

Java array declaration methods and java array declaration MethodsJava array definition declaration methods: 1. type name [] variable name = new type name [length]; 2. type name [] variable name = {?,?,?}; 3. type name [] variable name = new type

Spring Security build Rest service-0900-rememberMe remember me, Spring security remembers my basic principles: Upon login, the request is sent to the filter UsernamePasswordAuthenticationFilter. After the filter is successfully authenticated,

Java 9 distinguishes between opens and exports, and java9opensexports Collation This article mainly studies some precautions for migrating data to Java 9. Migration type The code is not modularized. First, it is migrated to jdk9 to make good use

Use Maven to get detailed explanation of the first Spring Boot program, mavenspring Preface To learn a new technology, don't worry about its principles, procedures, how to organize code or something. Copy a demo directly from the official website or

Message Digest --- MD5 encryption, digest --- md5 EncryptionPassword Encryption Generally, the "Message Digest" technology is used to encrypt the password to avoid saving the password in "plaintext. Plaintext: Original TextMessage Abstract Is a

IDEA Spring MVC Hello World getting started, springmvcIntroduction, in fact, from. NET to Java has been around for several months, and many projects have been done. However, many configurations are based on company templates or online tutorials, I

Spring boot Study Notes (entry) and spring Study Notes Introduction: Spring Boot is a new framework provided by the Pivotal team. It is designed to simplify the initial setup and development process of new Spring applications. The framework uses a

Common solutions for Java high concurrency and java Solutions Common solutions for high concurrency in Java   1. ConcurrencyWhat is high concurrency? In the Internet era, high concurrency usually refers to the arrival of many accesses at a certain