Java
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Array of Java data structures (Java Academy of power nodes)
What is the use of arrays When you need to arrange the 30 numbers in size, it is a good choice to store them in a data…… -
Detailed explanation of Java rewriting and overloading methods and differences
Override Rewriting is a subclass's rewriting of the implementation process of the accessible methods of the parent cla…… -
Java implements the function of finding matching text based on regular expression [classic example]
This example describes the function of finding matching text based on regular expression in Java. Share with you for y…… -
Hash table of Java data structure (organized by power node Java College)
Basic concepts Hash table (also known as hash table) is a data structure that is accessed directly according to key va…… -
Java wechat public platform development (9) keyword reply and customer service interface implementation
WeChat official account shows that WeChat has made two models for us. One is the developer mode (that is, the developm…… -
Java wechat public platform development (7) application for public platform test account
In the previous articles, I have been writing about the use of some basic interfaces. In this process, I have been usi…… -
Summary of the differences between Java abstract classes and interfaces
Summary of the differences between Java abstract classes and interfaces Abstract class and interface are two mechanism…… -
Java efficiently prints an instance of a two-dimensional array (no recursion, no two for loops)
Print an element, do not let the loop variable i + +, and go out of the thinking formula (execute the loop body once, …… -
Spring + mybatis multi data source configuration implementation example
Recently, mybatis was used to configure multiple data sources. Originally, it was thought that a simple configuration …… -
Detailed explanation of spring MVC @ requestmapping annotation
introduction: Some time ago, the rest style was used in the project to develop the program, but when submitting data i…… -
Summary of network communication (TCP communication, UDP communication, multicast and NiO) of java basic knowledge
Summary of network communication based on Java In this article, we mainly discuss how to use java to realize network c…… -
Java simulation wechat grab red envelope example code
Java simply simulates the wechat red envelope grabbing function. In this example, 10 people grab a red envelope of 100…… -
Basic knowledge of JavaBean and common garbled code solutions
Basic knowledge of JavaBean and common garbled code solutions The garbled code problem should be a problem encountered…… -
Detailed explanation of split () method example of Java regular expression
This article illustrates the split () method of Java regular expressions. Share with you for your reference, as follow…… -
An example analysis of Chinese regular matching method in Java
This paper describes the method of Java regular matching Chinese. Share with you for your reference, as follows: 1. Ma…… -
Java using POI to operate Excel files
1、 Definition of poi There are two mainstream toolkits for operating excel in Java: JXL and poi. JXL can only operate…… -
Java regular expression determines whether the string contains Chinese examples
preface In daily development and programming, we sometimes get some input information from users. For specific applica…… -
A simple example of intercepting and dividing string in Java
At present, there are three forms: It can be selected and used according to actual needs Operation results: The above …… -
Example of a method for Java to get numbers in a string through regular expressions
preface This article uses a small example to learn how to obtain numbers in a string through regular expressions in Ja…… -
On the loss of digital accuracy in Java object to JSON
phenomenon Large numbers in Java, such as 18 / 19 bit integers (long), are converted into JSON. After they are output …… -
Detailed explanation of JDBC connection database in Java
1、 Concept 1. In order to enable the program to operate the database and operate the tables in the database, each dat…… -
Detailed explanation of Hibernate naming strategy
The naming strategy of Hibernate can reduce the maintenance of database identifier naming and further reduce the amoun…… -
Java implementation of random output 300 questions four operations
If you don't have much to say, please see the code: The above is the whole content of this article. I hope the content…… -
JDBC detailed explanation of Java transaction management learning
What is a Java transaction The general idea is that transactions are only related to databases. Transactions must comp…… -
Differences in Java Tostring(), (string), valueof() method
In the actual development and application of Java projects, the basic function of converting objects into strings is o…… -
Java decomposes a positive integer into prime factors
Program analysis: to decompose the prime factor of N, first find a minimum prime number k, and then complete it accord…… -
Java self addition and self subtraction operation process
No more nonsense. I'll post the code directly to you. The specific code is as follows: output i 2 j 7 k 7 h 3 p1 0 p2 …… -
Java prints out the digits in reverse order according to the number of positive integers
Title: give a positive integer with no more than 5 digits. Requirements: first, find how many digits it is, and second…… -
Java finds all subsets of a set through bit operation
Java does not have its own method to find all subsets of a set. We can find them through the subset law of the set. Al…… -
Java to merge cells and export excel examples
introduce POI provides APIs for Java programs to read and write files in Microsoft Office format. The document formats…… -
Socket communication instance code between Python and Java
Socket communication between Python and Java I have done a Java communication tool before, with basic functions such a…… -
A summary of the mistakes that long and integer are easy to make in Java
Today, many high-risk vulnerabilities are found after scanning the project with findbugs. A very common one is to comp……