put method

Get The get method is used to obtain the information specified by the request URI (in Entity format ). If the requestUri involves a data generation process, so the data generated in this process should be returned as an object in the response

Java Collection framework (medium) and java Collection frameworkJava Collection framework (medium) Because the collection framework in Java has a lot of content, it is divided into three parts to introduce the Java Collection framework, the content

Java Collection framework 08 -- HashMap and source code analysis1. Introduction to HashMap First, let's take a look at the inheritance relationship of HashMap.   java.lang.Object ? java.util.AbstractMap ? java.util.HashMap

The Cache-blockingcache can be blockedIn the previous section we mentioned the issue of displaying the use of Ehcache locks, in fact we can also implicitly use the Ehcache lock, that is, through the Blockingcache. Blockingcache is a wrapper class

Background: Thread insecure hashmap     because of the multithreaded environment, using HASHMAP for put operations can cause a dead loop, resulting in a CPU utilization of nearly 100%, so the hashmap can not be used in concurrent situations.  

One, background: thread insecure hashmap becauseIn a multithreaded environment, a put operation using hashmap causes a dead loop, which results in a CPU utilization of nearly 100%, so hashmap cannot be used in the concurrency scenario. Inefficient

1. GETGets the information (in entity format) specified by the requested URI (Request-uri)Request URI design to a data generation process, the data generated by the process should be returned as an entity in the corresponding instead of the source

Transferred from: http://www.importnew.com/16599.htmlMost Java developers are using maps, especially HashMap. HashMap is a simple but powerful way to store and retrieve data. But how many developers know how HashMap works inside? A few days ago, I

Reprinted from: Http://zztu.javaeye.com/blog/173964 This blog is reproduced from: Http://user.qzone.qq.com/33658071/blog/1193889677 HashTables provides a useful method to optimize application performance.HashTables is no longer a new concept in the

http://haohaoxuexi.iteye.com/blog/2119737can be blocked. Cache - BlockingcacheIn the previous section we mentioned the issue of displaying the use of Ehcache locks, in fact we can also implicitly use the Ehcache lock, that is, through the

"Java Source analysis": Concurrenthashmap JDK1.8 Recently has been looking at the source of the j.u.c, understanding the atomic operation, understanding the lock mechanism, understanding multithreading concurrency and so on. But Concurrenthashmap

HashTables provides a useful method for ApplicationsProgramTo achieve the best performance.HashTables is no longer a new concept in the computer field. They are used to accelerate the processing speed of computers. They are processed using today's

The HashMap class in the Java set and the HashMap class in the Java set Jdk1.8.0 _ 144 As one of the most common collections, HashMap inherits from AbstractMap. The HashMap Implementation of JDK 8 is different from that of JDK 7. The red/black tree

recently in the study of HTTP, see the security method of HTTP and idempotent part, not quite understand, especially "POST method is non-idempotent" do not understand, into the search information, found the following two valuable articles, special

Common methods of MapDemo1 map interface/** * java.util * Map interface type parameter: K-type of the key maintained by this map V-the type definition of the map value: Map is an interface, also known as a lookup table, Java provides a set of

For the buffer zone, the most important operation is the read/write operation. The buffer provides two methods to read and write data in the buffer: Get, put, and array. The get and put methods can read and write data in three ways: read and write a

[JDK source code series] ConcurrentHashMap, concurrenthashmap Concurrency is always a high-performance topic, and Concurrent containers are an important concurrency tool in java. So let's analyze the ConcurrentHashMap (Chashmap) in the Concurrent

I. Overview Android provides a LRUCache class that can be easily used to implement LRU algorithm caching. Java provides LINKEDHASHMAP, you can use this class is very convenient to implement LRU algorithm, Java Lrulinkedhashmap is directly inherited

part of Hypertext Transfer Protocol--http/1.1RFC 2616 Fielding, et al.9 method definition (Method Definitions)The following defines a common set of methods for the http/1.1 protocol. Although these methods can be extensible, it is not assumed that

Colleagues today asked me the difference between post and put method, I can not speak clearly, went to see the next RFC2616 document (computer network class reference, haha) ------------ The following is an elaboration of the difference between put