包含标签：Java 的文章
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Basic usage of BigDecimal for addition, subtraction, multiplication and division in Java
preface As we all know, Java is in Java The API class BigDecimal provided in the math package is used to accurately ca…… -
Java uses regular expressions to implement string template instances in the form of ${name}
preface I believe you may have encountered this situation. We often use string templates when developing requirements …… -
Java and javac commands are introduced in detail
Java and javac commands The - classpath option on the javac and Java command lines This is a very basic problem, but f…… -
Detailed introduction to Tomcat implementation of websocket
How Tomcat implements websocket Websocket protocol belongs to the HTML5 standard. More and more browsers have natively…… -
Wechat public account development tutorial
Introduction and content summary Several readers have complained that "Liu Feng only uses text messages as an example,…… -
Detailed explanation of the road to Java (V) access control
In Java, everything has some form of access control. The control levels of access rights from the largest to the small…… -
On hashcode method in Java (recommended)
The data structure of hash table must be familiar to most people, and hash table will be used in many places to improv…… -
Examples of two methods to split strings in Java
preface I believe everyone should know that in Java programming, sometimes we need to divide a string according to a s…… -
Detailed tutorial on mybatis
Jar package required by mybatis: You need to reference two jar packages, one is mybatis and the other is MySQL connect…… -
Two ways of traversing map in Java
Without much to say, go straight to the topic and look down with Xiaobian: 1. First convert the map object to set, and…… -
Detailed explanation of socket chat program based on Java — initial design (with demo)
Write before: Maybe it's near the end of the term, and various course designs come one after another. Recently, I saw …… -
Examples of Java annotations
Use of Java annotations @ h_ 403_ 3@ The use of annotation is very simple. You only need to mark an annotation where a…… -
Use of output stream outputstring() of Java IO stream
Fileoutputstream: subclass, write out the channel of data Steps: 1. Get target file 2. Create a channe…… -
An example of how Java uses GDAL to read and write shapefiles
Introduction to GDAL GDAL (geospatial data abstraction Library) is an open source raster spatial data conversion libra…… -
Java uses a custom class as the key value instance of HashMap
This is a classic question in Java and is often asked in interviews. In fact, many books or articles have mentioned th…… -
Detailed explanation of built-in functional interface of new features of Java 8
Java 8 new features built-in functional interface In a previous blog post lambda expression, we mentioned the function…… -
Detailed introduction to the four domain objects of JavaWeb
Java Web four domain objects 1) Attribute related methods 2) Domain object with the above attribute method The scope o…… -
How does Java delete elements during list or map traversal
There are many ways to traverse and delete the elements in the list or map, which will cause problems when used improp…… -
Java enumeration (enum) explains seven common uses
JDK1. 5 introduces a new type enumeration. Although it is a "small" function in Java, it brings "big" convenience to m…… -
Java method for saving / reading objects to / from files
1. Save object to file The Java language can only save the objects of classes that implement the serializable interfac…… -
Analysis on key points of Java multithreading
Multithreading details What are the similarities and differences between sleep method and wait method? Similarities: L…… -
Tomcat error: HTTP status 500 (wrapper cannot find servlet class) solution
Tomcat reports an error: HTTP status 500 - wrapper cannot find servlet class HTTP Status 500 - Wrapper cannot find ser…… -
JQuery animation effect code sharing
1、 Show, hide The display method in jQuery is: Show(), the hiding method is: hide()。 When there are no parameters, i…… -
Explanation of java web file upload and download examples (cool file upload Technology)
1、 Course overview In the development of web application system, file upload function is a very common function. Toda…… -
Solution to the exception of double type operation result in Java
Question: When two double type values are operated, sometimes the result value is abnormal. For example: Output: 39.98…… -
Java spring 5 new features functional web framework detailed introduction
New features of Java spring 5 functional web framework give an example Let's start with some excerpts from the sample …… -
Explain the socket chat program based on Java – server (with demo)
Write before: Yesterday, I recorded the initial design of a socket chat program I took the time to write on my blog, w…… -
Book module of Java Web Book Mall Design (4)
This paper then studies the classification module of the previous book Mall for your reference. The specific contents …… -
On the similarities and differences between Java interface and C + + virtual class
C + + virtual classes are equivalent to abstract classes in Java. The differences between C + + virtual classes and in…… -
Detailed explanation of Java Web image upload and file upload examples
Java Web image upload and file upload Image upload is essentially the same as file upload, and the image itself is als…… -
Method summary of circular deletion of elements in list in Java
In my impression, there is a problem with the way to use the for loop to delete the elements in the list, but you can …… -
JavaMail tutorial creating mail (2)
The JavaMail API uses javax mail. Message class represents a message. Message class is an abstract class, so we need t……