包含标签:Java 的文章
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Java – annotation based validation framework
I am looking for an annotation - based validation framework that will allow me to validate parameter values Similar to…… -
Java – what is the best way to update entities in JPA?
I am using JPA for some CRUD operations Do you want to update a correct method? By updating the query or by finding th…… -
Multithreading – is there a greendao thread safety best practice?
I've gone with greendao and it's all good so far One thing that doesn't seem to be covered in documents or websites (o…… -
Java uses regular to grab web mailboxes
Use regular to capture online mailboxes This is the website we need to capture. Implementation idea: 1. Using Java net…… -
Demo and summary of shift operator in Java (recommended)
First, there are three kinds of shift operators, and their operation types are only supported: byte / short / char / i…… -
Method of spring framework for processing JSON format data in Java Web project
JSON is a common transfer format, which is a format corresponding to key values. And the data size will be relatively …… -
Explain in detail the basic methods of implementing SHA1 and MD5 encryption algorithms in Java
SHA1 MD5 MD5 (message digest algorithm 5), that is, the fifth edition of message digest algorithm. Message digest is a…… -
An example explains the association query of data in MySQL by Java’s mybatis framework
Mybatis provides advanced association query function, which can easily map the result set obtained from the database t…… -
Java array element deletion and implementation of forward code
No more nonsense, just post the code to everyone. The specific code is as follows: -
Java to find the number of substrings in the string
1. Use indexof method: 2. If the substring is not a string with the same beginning and end, it can also be implemented…… -
Java implementation of single linked list and two-way linked list
This example shares the relevant codes of Java implementation of single linked list and two-way linked list for your r…… -
Preliminary notes on the use of Java’s JSON format conversion library gson
Now there are some open source projects that can convert Java objects into JSON. But most projects require you to add …… -
Give an example to explain the basic usage of Java JSON class library gson
Gson, a Java class library, can convert Java objects into JSON or JSON strings into an equivalent Java object. Gson su…… -
Detailed steps for Java connection to MySQL database
This article mainly takes MySQL as an example to talk about how Java connects to the database. The specific contents a…… -
On overloading of Java methods
Method overloading means that multiple methods with the same name but different parameters can be defined in a class. …… -
Java parsing PHP function JSON_ Encode Unicode encoding problem
During Android development, there is a coding problem when interfacing with the server-side interface. The data obtain…… -
Example of basic usage of JSON conversion library gson in Java
GitHub page for downloading and deploying gson: https://github.com/google/gson Before working with the gson API, you n…… -
Java URL to get PHP JSON data
Main.class import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import…… -
Greedy pattern matching of regular expressions in Java programs
Greedy mode: The quantity indicator defaults to greedy mode unless otherwise indicated. The expression of greedy mode …… -
Detailed explanation of character encoding format in Java
1、 Foreword When analyzing comparable and comparator, the CompareTo method of string class is analyzed. The bottom la…… -
Detailed construction process of java + mybatis + MySQL development environment
Main construction process 1. pom. Mybatis and database dependency are added to the XML file. Here, MySQL is used: 2. C…… -
Using Java and websocket to realize the example code of web chat room
Before introducing the text, let's introduce the background and principle of websocket: background In the browser, onl…… -
Gson is a complete tutorial for realizing the mutual conversion between Java objects and JSON format objects
Gson is a Java library used to realize the mutual conversion between JSON and Java objects. Gson is a hosted https://g…… -
Analysis of Excel instance using POI in Java
This example shares the specific code of Java using POI to operate Excel for your reference. The specific contents are…… -
JSP student information management system
This example shares the source code of JSP student information management system, JSP + servlet + JavaBean + jdbc + MY…… -
Detailed explanation of advanced examples of converting Java objects into JSON objects using gson Library
Common conversion operations for list, map and other structures can basically meet most of our needs, but sometimes th…… -
Simple example code of reading excel from Java Web
Directory structure: Data. Xls data: Background page: Data. java Front page: Index. jsp: Operation results: The above …… -
Example of Java reading excel table documents using Apache POI Library
Apache POI is a free, open source, cross platform Java API written in Java. Apache POI provides Java programs with the…… -
Gson implements JSON serialization and deserialization of Java objects
Download gson from GitHub: https://github.com/google/gson The application of gson mainly includes two conversion funct…… -
On the definition of classes and objects in Java programming
1. What is class? A: classes are objective, abstract and conceptual things. 2. What's the object? A: the object is con…… -
Use the gson library to convert the map key value corresponding structure object in Java into JSON
The storage structure of map is in the form of key / value. Key and value can be ordinary types, JavaBeans written by …… -
Example of Java using dichotomy to find and sort
To realize the dichotomy search, the array needs to be an orderly sequence. The dichotomy search is more efficient tha……