Recent Posts
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JDK installation and configuration tutorial in Linux
JDK can be downloaded on the official website or from a file server. 1. Create a Java folder in the usr Directory: 2. …… -
Example of integrated development of spring boot, spark and Cassandra systems
This article demonstrates an example of using spark as the analysis engine, Cassandra as the data store, and spring bo…… -
Introduction to session and persistence classes in the Hibernate framework of Java
The session object is used to obtain a physical connection to the database. The session object is lightweight, and an …… -
Introduction to some new features of Java 9
Accepted characteristics 1 Jigsaw project; Modular source code Jigsaw project is to modularize java code and divide JR…… -
Experience of escape in Java
It is generally believed that new objects are allocated on the heap, but this is not entirely correct. Through the ana…… -
Summary of frequently asked questions about feign in spring cloud
1、 Feignclient interface, cannot use composite annotations such as @ gettingmapping Code example: The @ requestmappin…… -
Java implementation of XML file student address book
Java realizes the student address book, uses XML file as data storage, and realizes the functions of adding, deleting,…… -
Java 9 distinguishes between opens and exports
order This article focuses on some considerations for migrating to Java 9. Migration type Several precautions Unreadab…… -
Detailed explanation spring boot uses redis cluster to replace mybatis L2 cache
1 . pom. Add dependency to XML 2 . To configure the redis cluster, refer to the official spring data redis documentati…… -
Sample code for integrating fastdfs using spring boot
In this article, we introduce how to use spring boot to upload files to the distributed file system fastdfs. This proj…… -
Detailed explanation of communication examples between threads in Java multithreading
Communication between threads in Java multithreading 1、 Use the while mode to realize the communication between threa…… -
It perfectly solves the problem that ports such as 8080 are occupied when deploying Tomcat on eclipse
Problem Description: When deploying Tomcat in eclipse, the following error occurs. The solution is as follows: Method …… -
Comparison of runnable, callable, future and futuretask in Java
Comparison of runnable, callable, future and futuretask in Java There are several thread related classes or interfaces…… -
Spring boot + mybatis + Vue. JS + elementui implementation of data addition, deletion, modification and query example code (II)
In the last article, I introduced spring boot + mybatis + Vue JS + elementui implements data addition, deletion, modif…… -
Solutions to errors in double quotation marks in JSON parsing
Sometimes when parsing JSON, you will encounter double quotation marks with English inside, resulting in parsing error…… -
Detailed explanation of Java ArrayList capacity expansion examples
This paper mainly studies the relevant contents of the detailed explanation of the example of Java ArrayList expansion…… -
2018 Java technology interview questions sorting
1. Servlet execution process The client sends an HTTP request, and the web server forwards the request to the servlet …… -
Judgment of Java interview question parsing and prevention of SQL injection
This paper mainly studies a common question in Java interview questions, the problem of judging and preventing SQL inj…… -
Method to solve the problem of invalid hibernate 4 execution of save() or update()
Recently, I encountered a problem when writing the online mall project: Hibernate did not have any effect after execut…… -
Java generate graphic verification code tool class
Generate verification code effect ValidateCode. Java verification code generation class ImgFontByte. java ValidateCode…… -
In depth analysis of zuul filter built in spring cloud
preface Spring cloud is written and enabled for zuul by default. What are the functions of these filters? We might as …… -
Java array permutation and combination problem summary
During the interview or written examination, I have encountered the following four hand tearing algorithms for arrange…… -
Java implementation of simple console address book
The sub menus at all levels are controlled through the main menu, and the functions of adding records, finding records…… -
Summary of this escape problem in Java Concurrent Programming
This escape means that other threads hold a reference to the object before the constructor returns Calling methods on …… -
Detailed explanation of the method of using condition class to operate lock in Java multithreaded programming
The function of condition is to control the lock more accurately. The await() method in condition is equivalent to the…… -
Java implementation of fuzzy matching files under a folder and delete function example
This example describes the function of fuzzy matching and deleting files in a folder implemented in Java. Share with y…… -
Java reads the picture from the network and saves it to the local instance
This example shares the specific code that Java reads pictures from the network and saves them locally for your refere…… -
Java implementation uses FreeMarker to perfectly export word documents (with pictures)
preface Recently, in the project, due to the customer's requirements, the page content (such as contract agreement) wa…… -
Detailed explanation of spring boot integration mybatis (annotation method)
Mybatis is an excellent persistence layer framework that supports customized SQL, stored procedures and advanced mappi…… -
Java code implementation of picture overlay effect
This example shares the specific code of Java to realize the display of picture superposition effect for your referenc…… -
Quickly learn about session in Hibernate
Session in Hibernate is a level-1 cache, which can be understood as a process level (thread bar) cache. It always exis…… -
Hibernate implements the analysis of adding, deleting, modifying and querying operation examples through session
Today, I learned how to add, delete, modify and query the database through hibernate. Here is a brief introduction: Fi……