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When debugging in eclipse, you can’t view the variable value when hovering over the mouse. Solution
Problem Description: in debug mode, eclipse does not automatically display the corresponding value of a variable when …… -
Heap sorting code example of Java algorithm
Heap is a special complete binary tree, which is characterized by that all parent nodes are smaller than child nodes, …… -
Detailed introduction to spring batch tutorial (with source code)
Spring batch is an open source batch processing framework Perform a series of tasks In spring batch, a job consists of…… -
Case analysis of spring boot email sending function
Introduction to mail service Mail service has appeared in the early days of the Internet, and now it has become an ind…… -
Method of creating a server using spring boot embedded container undertow
Undertow is a web server, so it needs to have the basic characteristics of modern web server, such as servlet, JSP, fi…… -
Struts 2 implements the interception operation method of action request object
The core function of struts 2 is action. For developers, using struts 2 is mainly to write action. Action classes usua…… -
CAS explanation of Java Concurrent Programming
CAS (compare and swap) compare and replace is a technique used in designing concurrent algorithms. In short, compare a…… -
An example of implementing AOP by dynamic agent simulation
AOP implementation code is quite simple The main core is dynamic proxy and reflection I Interface class: II Interface …… -
Example code of coding and garbled code when java servlet uses printwriter
In the coding and garbled code series in the previous web pages, the dynamic response stream constructed by servlet ha…… -
Visitor pattern usage scenario and code example of Java design pattern
Java design pattern visitor pattern Model concept Visitor mode represents an operation that acts on the elements in an…… -
Java improvement Part 10 in-depth analysis of ArrayList
In the previous chapter, we introduced the class diagram of the collection. In this section, we will learn the most co…… -
Java implements the same DES encryption and decryption algorithm as JS
This article describes the Java implementation of the same DES encryption and decryption algorithm as JS. Share with y…… -
Java programming — consider polymorphism in testing
Object oriented programming has three characteristics: encapsulation, inheritance and polymorphism. Encapsulation hide…… -
Detailed explanation of automatic unpacking and automatic packing in Java programming
What is automatic packing and unpacking Automatic packing of basic data types（ auto@R_885_2419 @Unpacking（ un@R_885_…… -
Java programming BigDecimal usage example sharing
Java provides operation classes with large numbers (more than 16 significant bits), that is, Java math. Bininteger cla…… -
The IOC simulation implementation of spring is introduced in detail
Simply put, when you need an object, you don't need to manually create a new one, but other containers will help you p…… -
Maven build lifecycle details
What is the build lifecycle A construction life cycle is a sequence of phases. Each of these construction life cycles …… -
Detailed explanation of Java array Foundation
array Array: a collection of data of the same type. There are two methods for initializing Java arrays: Static initial…… -
Spring boot Maven plug-in usage details
The spring boot Maven plug-in provides the following steps for using the spring boot application: Repackaging: create …… -
Summary of methods for calculating program code execution time in Java
This paper summarizes the method of calculating the execution time of Java program code. Share with you for your refer…… -
Java method example for finding the maximum common divisor and the minimum common multiple
This paper describes the method of finding the maximum common divisor and the minimum common multiple in Java. Share w…… -
Java calculation intersection, difference set, union method example
This paper describes the method of Java computing intersection, difference set and union set. Share with you for your …… -
Detailed explanation of Hibernate + jdbc implementation of batch insertion, update and deletion
This paper describes the method of batch insertion, update and deletion with hibernate JDBC. Share with you for your r…… -
Spring boot integration rabbitmq example tutorial
1、 Introduction to rabbitmq Rabbitmq is a kind of message middleware, which is the basic software to send and receive…… -
Java encryption and decryption rsa usage code example
Recently, in order to analyze a request flow, I had to study RSA encryption. First of all, emphasize that the "key" of…… -
Servlet 3 upload file uploading practice in Java Web
In the version before servlet 3.0, file upload is a headache. Although it is implemented by a third-party framework, i…… -
Usage of spring @ profile annotation
This article mainly introduces how to use @ profile in spring and under what circumstances. First, let's talk about wh…… -
Detailed explanation of IOC and Di of spring
Here is a brief introduction to the difference between IOC and di: IOC: the translation is control inversion. Spring m…… -
Servlet3 file upload operation
In servlet2 In 5, when we want to realize the file upload function, we generally need to use third-party open-source c…… -
How to obtain the method instance of timestamp in Java
preface Digital time stamp technology is a variant of digital signature technology. It refers to the total number of s…… -
Code example of using java timer
1. First of all, the timer must be started as soon as the container starts, so we can choose to write the timer in a l…… -
Java date operation method tool class instance [including date comparison, size, addition and subtraction, judgment, verification, year acquisition, etc.]
This article describes the Java date operation method tool class with an example. Share with you for your reference, a……