Programmer Think

1, About servlet s Explain servlet in detail, https://www.runoob.com/servlet/servlet-tutorial.htmlOverview: Servlet and servlet container Java Servlet (Java Server applet) is a Web component based on Java technology. It runs on the server side. It is managed by the servlet container and used to generate dynamic content. Servlet is a platform ...

1, Foreword For front-end projects, especially the middle and back office management system projects, permission design is one of the most complex points. Generally speaking, permission design needs to be checked by the back end. After all, the front end is relatively unable to ensure security, and the code and data requests of the front end ...

Daily test 1,Three characteristics of elements in a set Must be of immutable type disorder No repetition 2,What is the purpose of the collection? Relational operation duplicate removal 3,An example is given to illustrate the relational operation intersection s1 & s2 Union s1 | s2 Differen ...

preface Data structure is the way that computer stores and organizes data. A data structure is a collection of data elements that have one or more specific relationships with each other. In general, carefully selected data structures can bring higher operation or storage efficiency. Data structure is often related to efficient retrieval al ...

Learning notes for Hbase (2) In the learning notes (1) of Hbase, it mainly briefly states the theoretical knowledge related to Hbase. In the learning notes (2) of Hbase, we mainly learn the simple addition, deletion, modification and query commands of Hbase. Basic shell command operation of Hbase 1. Enter the Hbase shell command line window ...

reasoning This section is the last section of the initial tutorial. In order to better adapt to different reasoning devices, reasoning is divided into 1) shengteng AI processor reasoning and 2) mobile device reasoning. Shengteng AI processor reasoning 1 Overview Ascend AI processor is an energy-efficient and highly integrated AI processor f ...

array Part I summary review Previous link address: Kotlin studies Chapter 1 (1) Knowledge learned in the previous article: Basic data type: includes numeric type and string typeValue types: Byte, Int, Long, Float, Double. There is no packing type. Pay attention to the mark of Long type, which must be capitalized with "L"String type ...

Learning objectives Create Vue instances and know the common properties of VueThe hook function of Vue's life cycle will be usedCan use vue common instructionsvue will be used to calculate properties and watch monitoringCan write Vue componentsMaster communication between componentsUnderstand the use of Vue router 0. Preface A few days ago, w ...

Many times, if you want to clone a warehouse from GitHub, you will encounter the problem of slow speed, and the connection often fails. Here is an effective solution.1, BackgroundIt should be the problem encountered by many small partners: if you want to clone the project from GitHub, it will be too slow in many cases. After waiting for a long ...

Three characteristics of object-oriented: encapsulation, inheritance and polymorphism encapsulation In order to ensure the security of variables, we use encapsulation, do not care about the specific implementation details, but only access the members of the class through external excuses. public class Student { private String name; p ...