Java

The first code is not an asynchronous process, the service program receives a parameter from the request, and then takes the information based on the parameter from the database or the Web page, then these resources are slow, causing the blocking

20172333 2016-2017-2 "Java Program Design" 3rd week Study summary Textbook study summaryThe 1.String class, the random class, the math class, the NumberFormat class and the DecimalFormat class, the enumeration type, and the wrapper class.Problems in

Learning Resources: http://www.cnblogs.com/dolphin0520/p/3938914.htmlThe Copyonwrite container is the container that is copied when it is written. The popular understanding is that when we add elements to a container, instead of adding them directly

The 6.1 interface is not a class and is a description of a set of requirements for a class that needs to be defined in a uniform format that follows the interface description. For example, the sort method in the arrays class (which can sort an array

1. Bubble sortBubble sort (Bubble sort) is one of the most classic and simplest sorting algorithms.Principle: Compare two adjacent elements, Exchange large value elements to the right (descending opposite).Step: Compare adjacent elements. If the

Java is a simple, object-oriented, distributed, interpretive, robust, secure, structured-neutral, portable, high performance, multi-threaded static language. So what are the features of the Java language?1. The Java language is simpleThe syntax of

When studying both the Java NIO and IO APIs ' s, a question quickly pops into mind:When should I use IO and when should I use NIO?In this text I'll try to shed some light on the differences between Java NIO and IO, their use cases, and how they

I. What is automatic packing and unpackingVery simple, the following two lines of code can see the boxing and unpacking process1 // Automatic Boxing 2 Integer total =; 3 4 // self-setting unpacking 5 int Totalprim = total;Simply put, boxing is the

Java uses mysql load data local infile to import DATA in large batches to MySQL, mysqlinfile Use of Mysql load data In a database, the most common way to write data is to write data through SQL insert, and recover the database through backup files.

Three major features of Java-Summary of encapsulation knowledge and summary of three major java packages Recently, a friend said that he wanted to say that he was learning java recently. He still had some incomprehension about the object-oriented

Java basics and java Basics This is a full set of Java knowledge I have prepared in my previous lectures. It is applicable to beginners and intermediate and advanced students. You can download it. I think it is more systematic and comprehensive, it

In springboot, use ContextLoaderListener. getCurrentWebApplicationContext (); to obtain the problem that WebApplicationContext is null, WebApplicationContext applicationContext = ContextLoaderListener.getCurrentWebApplicationContext(); In

SpringBoot's Method for Solving ajax cross-origin problems: springbootajajax cross-Origin SpringBoot solves ajax cross-origin issues for your reference. The specific content is as follows: 1. method 1 1. Compile a Configuration that supports

Examples of Spring Boot and Kotlin scheduled Tasks (Scheduling Tasks) and kotlinscheduling You may encounter such scenarios when writing Spring Boot applications. For example, you need to regularly send text messages, emails, and other operations,

JAVA basics/Lesson 6: Object-oriented/JAVA classes and objects, Object-Oriented java 2013-0 I. process-oriented and object-oriented 1. process-oriented programming: Starting from every step of solving the problem, it is suitable for solving small

MySQL implements remote login, and mysql implements remote login. Cause analysis:Host 'local' is not allowed to connect to this MySQL server typical remote permission issues.Problem: MySQL does not have the permission to enable remote logon. It

Talking about the principle of Spring Cloud Ribbon, cloudribbon Ribbon is an open-source Project released by Netflix. It provides client-side software Load Balancing algorithms to connect Netflix's intermediate layer services. The Ribbon client

LinkedHashMap source code analysis of Java Collection series, linkedhashmap source code In this article, we started to analyze the source code of LinkedHashMap. LinkedHashMap inherits HashMap, which means that LinkedHashMap is extended on the basis

Share a REST APIs document Framework swagger and apisswagger integrated in the project 1. Why is swagger used? 1-1 when a background developer develops an interface, do they need to re-write an interface document and submit it to the front-end

JAVAEE--BOS logistics project 06: Paging query, partition export Excel file, add area, paging problem summary, javaee Logistics Project1Learning plan 1. Partition combination condition paging Query N partition paging query (no filtering