Java
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Final and anonymous inner classes in java learning
Final and anonymous inner classes for java learning 0x00 Preface In the last few articles, I learned that the subclass…… -
Socket network programming for java learning
Socket network programming for java learning 0x00 Preface In the development of some tools, the most inseparable may b…… -
Common collections2 analysis of Java Security
Common collections2 analysis of Java Security Launch: common collections2 analysis of Java Security 0x00 Preface The u…… -
Integration of SSM framework for java learning
Integration of SSM framework for java learning 0x00 Preface The spring, spring MVC and mybatis frameworks that we lear…… -
Urldns chain for Java Security
Urldns chain for Java Security 0x00 Preface When learning Java's deserialization vulnerability, you have to learn one …… -
On the vulnerability of Weblogic T3 protocol in Java Security
On the vulnerability of Weblogic T3 protocol in Java Security The first article from the security guest: a preliminary…… -
Reflection of java learning
Reflection of java learning 0x00 Preface Today, let's briefly record some things about reflection and annotation. Refl…… -
Dependency, association, aggregation, combination
Excerpt from: http://www.iteye.com/topic/632059 rely on It can be simply understood that one class a uses another clas…… -
Java mail
We have used many emails, QQ, 163, Netease, etc. 1、 SMTP protocol should be followed when sending e-mail, and POP3 pr…… -
As you know, Java singleton mode is not singleton mode
When we search the singleton mode, we can see many examples, such as lazy and hungry, as follows: When we write a main…… -
java. lang.NoSuchMethodError: javax. servlet. ServletContext. getContextPath()Ljava/lang/String;
Problem Description: in eclipse 3 This error always occurs when starting Tomcat6 in 7, java. lang.NoSuchMeth…… -
18 ID number verification methods for China’s residents, Java algorithm implementation
public static boolean validate18Idcard(String idcard){ if(idcard == null ) { return false; …… -
Problems caused by cookies containing Chinese
On Friday, after the project test was completed and there was no problem, it went online. After going online, it was f…… -
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HTTP 403, Tomcat configures HTTPS, unable to access, return status code HTTP 403
In order to access the application started by the local machine (Windows system) in the form of HTTPS, after generatin…… -
Loading of Java classes
Keyworked Java class loading, class loading mechanism, classloader, parent delegation model, parent delegation model W…… -
Java uses zxing to generate QR code bar code
1、 Add the Maven dependency of zxing, or download the zxing jar package This example uses zxing3 Version 2.0 Maven de…… -
Three implementations of Java proxy
The Java proxy mode can be implemented in the following ways: 1. Static proxy. 2. JDK dynamic agent. 3. C…… -
Mybatis source code Learning Series
preface A long time ago, we learned Java from a console of Hello world At the beginning, we entered the object-oriente…… -
The Linux system reports an error when the virtual machine starts. This host supports Intel VT-x, but Intel VT-x is disabled
An error is reported when using the virtual machine to start Linux, as follows: The virtual machine is configured to u…… -
Java program questions
Excerpt from: http://www.cnblogs.com/forlina/archive/2011/08/03/2126292.html 1. Complete quick sorting and bubble …… -
Jedis, spring redis data integrated use, version exceptions and solutions.
Recently, there have been some problems in integrating and using redis spring redis spring：3.2. 4.RELEASE jedis: jedi…… -
The of Java 8 — simple and elegant lambda expressions to explore Java 9 module system and reaction flow
After the release of Java 8, words such as lambda expression, stream and so on slowly appeared in our words. For examp…… -
Error Java lang.ClassCastException: com. xx cannot be cast to ResourceBundle
An error occurred: java.lang.ClassCastException: com.xxx cannot be cast to ResourceBundl…… -
The difference between “= =” and equals methods
When writing code, you often use "= =" and equsls. You rarely think about the difference between them. Now let's summa…… -
Explore Java 9 module systems and reaction flows
New features of Java 9, Java modularization, Java reaction flow, reactive, jigsaw Modular system The Java platform mod…… -
Introduction to Axis2 WebService — development environment construction and concept understanding
On the concept of web service, there are various explanations on the Internet, but it is not easy to understand. It ca…… -
A Java recursive program
First of all, I searched some interview questions to do, including one: enter an integer and find the sum of each numb…… -
What does the equals method compare in Java?
We know that whenever we create a new class, if the parent class is not specified, it inherits the object class by def…… -
Two ways of configuring virtual hosts in Tomcat
1. Virtual host configuration based on host name Suppose there is hello. Com in the root folder under Tomcat and wenba…… -
Hibernate operation: could not get next sequence value;
Error message: [2017-09-28 18:51:38,854]-[org.hibernate.util.JDBCExceptionReporter:101] ERROR - Numeric Overflow org.s…… -
java. lang.IllegalAccessError: tried to access field org. slf4j. impl. StaticLoggerBinder. SINGLETON from class org. slf4j. LoggerFactory
Error record: Java lang.IllegalAccessError: tried to access field org. slf4j. impl. StaticLoggerBinder. SINGLETON from……