object lock

Multithreading in Java is a preemptible mechanism rather than a time-sharing mechanism. A thread can run, run, block, or die in the following states. A preemptible mechanism means that multiple threads are running, but only one thread is running.

One, thread safetyWhen multiple threads execute the same piece of code, each execution result is the same as the result of single-threaded execution, and there is no two semantics for the execution result, which can be called thread-safe.When it

Multithreaded programming, the most critical and most concerned about the problem should be synchronization, which is a difficult and core. from JDK's earliest versions of synchronized, volatile, to JDK 1.5 in the Java.util.concurrent.locks package

strengthen the article1. Thread Mutex lockA, multi-threaded mutex shared "Basic data type Data" resource, the lock (with the Synchronized keyword) must be an object, the basic data type of the variable can not be used as an object lock, at the same

Java's process synchronization is implemented through synchronized (), and it should be explained that the Java synchronized () method is similar to the mutually exclusive block of memory in the operating system concept. In the type of object in

Summary of 40 Java multithreading issues and 40 Java Multithreading Preface I personally think that the more you learn, the more complicated and complex the knowledge, the more you need to make a profound summary so that you can remember deeply and

ObjectiveJava Multi-threaded classification has written 21 multi-threaded articles, 21 Articles of a lot of content, personally think, learning, the more content, the more miscellaneous knowledge, the more need to carry out a profound summary, so as

Article transferred from May to Cangjie http://www.cnblogs.com/xrq730/p/5060921.htmlObjectiveJava Multi-threaded classification has written 21 multi-threaded articles, 21 Articles of a lot of content, personally think, learning, the more content,

[Java concurrent programming practice] -- synchronized, asynchronous ynchronized In our practical application, we may often encounter such a scenario: multiple threads read or write the same data, access the same file, and so on. If we do not

Reprint Please specify source:http://blog.csdn.net/ns_code/article/details/17229601If a thread waits for a notification, but the thread waits for a condition that is not satisfied, the thread is given an early notification, and if the condition is

Original link: Https://mp.weixin.qq.com/s/5OK2aNJ1fdnrvul8PT_ZiQThis article mainly summarizes the problem of multithreading, so it lists 40 multi-threading problems.These multithreading problems, some from the major sites, some from their own

Multi-threaded synchronization relies on the object lock mechanism, the SYNCHRONIZED keyword is behind the use of blocking to achieve mutual access to shared resources.The following is a simple example of comparative analysis. The work of the

Author Multithreading total: http://www.cnblogs.com/xrq730/category/733883.htmlOriginal address:ObjectiveJava Multi-threaded classification has written 21 multi-threaded articles, 21 Articles of a lot of content, personally think, learning, the more

Transferred from: http://zy19982004.iteye.com/blog/1626916I. State diagram of a threadTwo. Initial state Implement runnable interface and inherit thread can get a thread class, new one instance comes out, the thread enters the initial state

Summary A multi-threaded program created by a developer sometimes generates an error value or produces other strange behaviors. Odd behavior occurs when a multi-threaded program does not use a synchronous serialization thread to access key code.

wait and consumer y are important components of Java synchronization. Combined with the synchronized keyword, you can create many excellent synchronization models. synchronized (this) {} is equivalent to public synchronized void method (){.....}

1. What is the use of multithreading?A question that may seem a little ridiculous to many people: I can use multithreading, and what's the use of it? In my opinion, this answer is even more nonsense. The so-called "know the reason why", "will use"

ObjectiveJava Multi-threaded classification has written 21 multi-threaded articles, 21 Articles of a lot of content, personally think, learning, the more content, the more miscellaneous knowledge, the more need to carry out a profound summary, so as

A summary of multithreading problems1. What is the use of multithreading?A question that may seem a little ridiculous to many people: I can use multithreading, and what's the use of it? In my opinion, this answer is even more nonsense. The so-called

ObjectiveJava Multi-threaded classification has written 21 multi-threaded articles, 21 Articles of a lot of content, personally think, learning, the more content, the more miscellaneous knowledge, the more need to carry out a profound summary, so as