包含标签:Java 的文章
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        Tree of Java data structures and algorithms (power node Java College)Why use trees: The tree combines the advantages of the two data structures: one is the ordered array, and the speed of……
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        Detailed explanation of inheritance examples of Java classes (power node Java College)I Do you know class? In Java, class files are For code files with Java suffix, at most one public class is allowed in ……
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        Getting started with the spring boot framework and quick startSix previous articles have been written in succession, mainly introducing the spring and spring MVC frameworks. In the……
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        Java network programming, socket programming, etcNetwork programming refers to writing programs that run on multiple devices (computers), which are connected through t……
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        Detailed explanation of polymorphism concept and implementation principle in JavaI What is polymorphism? 1. Definition of polymorphism Allows different objects to respond to the same message. That is……
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        Java implements the function of exporting the object array through Excel1、 Import the relevant jar packages. POM dependencies are as follows: 2、 Start code 1. If the export function is use……
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        Java self addition and self subtraction operation processNo 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 ……
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        Java prints out the digits in reverse order according to the number of positive integersTitle: give a positive integer with no more than 5 digits. Requirements: first, find how many digits it is, and second……
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        Java finds all subsets of a set through bit operationJava 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……
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        Java to merge cells and export excel examplesintroduce POI provides APIs for Java programs to read and write files in Microsoft Office format. The document formats……
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        Socket communication instance code between Python and JavaSocket communication between Python and Java I have done a Java communication tool before, with basic functions such a……
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        A summary of the mistakes that long and integer are easy to make in JavaToday, many high-risk vulnerabilities are found after scanning the project with findbugs. A very common one is to comp……
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        Detailed explanation of the conversion of byte, byte array, int and long in Java1、 Source code of conversion between byte and int in Java: Test code: 2、 Source code of conversion between byte arra……
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        Detailed explanation of lambda expression example, a new feature of Java 8Detailed explanation of lambda expression example, a new feature of Java 8 Before introducing lambda expressions, let'……
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        Java replace spacesPlease implement a function to replace spaces in a string with "% 20". For example, when the string is we are happy Th……
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        Detailed explanation of IP and URL and example code of network programming in java developmentJava network programming java. net Class InetAddress this class represents an Internet Protocol (IP) address. An excep……
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        JSON lib converts a string in JSON format into an instance of a Java objectThe date in the JSON format string is in the format of 'yyyy MM DD HH: mm: Ss'. If it is converted into an object acco……
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        Java implements the JSON back-end to transfer data to the front-end1 back end two auxiliary classes ConcurrentDateUtil. Java, used to generate the format we need JsonResult. Java, jsonr……
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        Summary of object-oriented knowledge points in Java1、 Concepts of objects and classes Class: an abstraction of a class of things with the same properties and methods. O……
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        Java and freemaker keep two decimal places1、 Java retains 2 decimal places 2、 Freemaker keeps two decimal places Supplement: freemaker keeps decimals Freemake……
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        10 Java programmers familiar with object-oriented design principlesObject oriented design principle is the core of oops programming, but most Java programmers I have seen are enthusiast……
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        Java does not print instances of array elements with circular statementsExamples are as follows: The above example of printing array elements without circular statements in Java is all the c……
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        Java intercepts string instances between specific two tagsIf there is a string: higklmnopq The Java code is as follows: The above example of Java intercepting the str……
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        Comparison and difference between overloading and rewriting in JavaThe difference between overloading and rewriting in Java First, let's talk about overloading (1) Method overloading is……
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        Summary of the differences between Java abstract classes and interfacesSummary of the differences between Java abstract classes and interfaces Abstract class and interface are two mechanism……
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        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, ……
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        Spring + mybatis multi data source configuration implementation exampleRecently, mybatis was used to configure multiple data sources. Originally, it was thought that a simple configuration ……
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        Detailed explanation of spring MVC @ requestmapping annotationintroduction: Some time ago, the rest style was used in the project to develop the program, but when submitting data i……
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        Summary of network communication (TCP communication, UDP communication, multicast and NiO) of java basic knowledgeSummary of network communication based on Java In this article, we mainly discuss how to use java to realize network c……
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        Java simulation wechat grab red envelope example codeJava simply simulates the wechat red envelope grabbing function. In this example, 10 people grab a red envelope of 100……
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        Basic knowledge of JavaBean and common garbled code solutionsBasic knowledge of JavaBean and common garbled code solutions The garbled code problem should be a problem encountered……
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        Detailed explanation of split () method example of Java regular expressionThis article illustrates the split () method of Java regular expressions. Share with you for your reference, as follow……
