saml implementation in java

I remember just beginning to learn Java, one encounter multithreading situation is synchronized, relative to us at that time synchronized is so magical and powerful, at that time we give it a name "sync", Also become our solution to multithreading situation of the hundred test bad medicine. But as we learn, we know that synchronized is a heavyweight lock, which, as opposed to lock, looks so unwieldy that we think it is less efficient and slowly abando

In Java container Study Notes (1), I have outlined the basic concepts and interface implementation of collection, and summarized the implementation and usage of an important subinterface list and its sub-classes. This article mainly summarizes the usage of the Set interface and its implementation classes, including has

Java implementation of common encryption algorithm (i.)--one-way encryption algorithm MD5 and SHAexcerpt from: http://www.blogjava.net/amigoxie/archive/2014/06/01/414299.html1. Java Security Architecture 1.1 Introduction to Java Security architectureJava provides classes and interfaces for the security framework. The J

Java Web intrusion detection and simple implementation-general Linux technology-Linux programming and kernel information, the following is a detailed description. In Java Web applications, especially website development, we sometimes need to add an intrusion detection program for applications to prevent malicious refreshing, prevent Unauthorized users from repeat

A deep understanding of the implementation principles of HashMap in Java HashMap inherits from the abstract class AbstractMap. The abstract class AbstractMap implements the Map interface. The diagram is as follows: Map in Java The interface allows us to use an object as the key, that is, we can use an object as the key to find another object. Before discussi

Atitit. java parses the implementation of the SQL parser interpreter, atitit. javasql Atitit. java parses the implementation of the SQL parser Interpreter 1. parsing the essence of SQL: Implementing a 4gl dsl programming language compiler 1 2. parse the main SQL process, lexical analysis, and then perform syntax ana

() method that is currently executing.Back to top of pageImplementing a Java Thread monitoring agentThis section describes how to implement a Java Thread Monitoring agent (agent) based on the Java thread switching monitoring model.The thread monitoring agent is a JVMTI-based C language implementation that captures thr

Interpreting the implementation of the android Log Mechanism: (2) Java domain output log Tian haili @ csdn Android provides a user-level lightweight Log Mechanism. Its implementation runs through Java, JNI, local C/C ++ implementation, Linux kernel driver, and Othe

recursive call, the system opens up stacks for each layer's return point and local amount. Too many recursive times cause stack overflow and so on. ① Baidu Entry-recursion 1. Realize the effect 2. Implementation analysis When we don't know how many children a node has, we have to loop through the query, where we use recursive implementations. When using recursion, pay special attention to the need to have an export, to avoid the death cycle. A simpl

Java Day one article June 21 First introduce some optimistic lock and pessimistic lock:Pessimistic lock: Always assume the worst case, every time to take the data when they think others will change, so every time when the data are locked, so that other people want to take this data will block until it gets the lock. Traditional relational database in the use of a lot of this locking mechanism, such as row locks, table locks, read locks, write locks, e

Read/write locks in Java concurrent packages and their Implementation Analysis 1. Preface Usually used locks such as ReentrantLock in Java concurrent packages are usually exclusive locks. These locks can be accessed by only one thread at a time, the read and write locks can be accessed by multiple read threads at the same time. However, when the write thread acc

Https://www.cnblogs.com/qjjazry/p/6581568.html2600433554963791First introduce some optimistic lock and pessimistic lock:Pessimistic lock: Always assume the worst case, every time to take the data when they think others will change, so every time when the data are locked, so that other people want to take this data will block until it gets the lock. Traditional relational database in the use of a lot of this locking mechanism, such as row locks, table locks, read locks, write locks, etc., are in

Today, I suddenly wanted to see the dynamic proxy of JDK, because I used to know a little about it, and I just wanted to test it, the following interfaces and classes have been written soon:Interface Class: UserService. java Copy codeThe Code is as follows: package com. yixi. proxy; Public interface UserService { Public int save (); Public void update (int id ); } Implementation class: UserServiceImpl. java

The IOC (inverse of control) can be translated as "controlled inversion", but most people are accustomed to calling it "dependency injection". In spring, the implementation class, parameter information, etc. can be configured in the corresponding configuration file by IOC, so when the implementation class or parameter information needs to be changed, only the configuration file needs to be modified, and thi

First introduce some optimistic lock and pessimistic lock:Pessimistic lock: Always assume the worst case, every time to take the data when they think others will change, so every time when the data are locked, so that other people want to take this data will block until it gets the lock. Traditional relational database in the use of a lot of this locking mechanism, such as row locks, table locks, read locks, write locks, etc., are in operation before the lock. Another example of

the perspective of APP app1, we regard integration with external app app3 based on the requirement-response mode as a "synchronous service" activity, the notification is regarded as an "Asynchronous receipt" activity. That is to say, in request-response and notification, our reference point application app1 becomes a service provider (service endpoint) and receives messages from the client. In this article, you will learn how to implement these two modes in such applications (assuming that they

second is to modify and maintain a large amount of work. Using the Java reflection and tagging mechanism, [3] the author proposes aA support Class (Persister) for Java bean persistence. This paper mainly expounds the design and implementation of object-oriented query method of Persister class.1 Persistence support classAdd, modify, and delete business data for c

() {} } class Girl extends person{public String toString () { C15/>return "I ' m a Girl"; } public void Speak () {} public void Sing () {} }When these three classes are loaded into the Java virtual machine, the method area contains information about the respective classes. Girl and boy method tables in the method area can be represented as follows:Figure 3.Boy and Girl method tableAs you can see, the method table for Girl and boy contains meth

Web in Java Web applications, especially web development, we sometimes need to add an intrusion detection program to the application to prevent the malicious refreshing of the function, to prevent illegal users to repeatedly send data to the Web application. Of course, intrusion detection can be implemented in many ways, including software, hardware firewall, intrusion detection strategy is also a lot. Here we mainly introduce the

independently, such as f/t, without the need for additional client calls, such as s/a. 2.1 Creation type (creational Patterns) Used to create objects, put the work of creating objects in another object, or defer them to subclasses. 2.1.1 Single case (Singleton) Ensure that a class has only one instance and provides a global access point.It is important to note that the use of singleton under multiple ClassLoader causes a singleton instance to be available under all types of loaders, because