synchronized method

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

Each Java object can be used as a lock that implements synchronization, which is called a built-in lock or a monitor lock. The thread acquires the lock automatically before it enters the synchronization code block, and the lock is automatically

"This article goes from" http://www.cnblogs.com/dolphin0520/p/3920385.htmlThe following information can be found in the text descriptions of these three methods:1) The Wait (), notify (), and Notifyall () methods are local methods and are final

First of all, the thread is able to read my previous blog. Familiar with the thread life cycle diagram and text descriptionGood to begin with:There are several ways to implement a thread in 1.java?A: There are two ways to implement this. Each is

1.. What is the difference between NET and C #For:. NET generally refers to the. NET Framework framework, which is a platform, a technology.C # is a programming language that can be based on. NET platform applications.2. The rules for the number of

In the Java Pure Grammar interview, mainly encountered some of the basic interview questions, summarized here!First, to talk about final, finally, finalize the difference. final-modifier (keyword) If a class is declared final, it means that it

1. Can a ". Java" source file contain more than one class (not an inner class)? What are the restrictions?Can I include more than one class (not an inner class) in a ". Java" source file? What are the restrictions?This is OK, a ". Java" source file

Two ways to collaborate between threads: Wait, notify, notifyall, and conditionIn the front we will have a lot of questions about synchronization, but in reality, there is a need for collaboration between threads. For example, the most classic

Whether an object needs to be thread-safe depends on whether it is accessed by multiple threads .When multiple threads access the same variable state amount , it is possible to make an error if the correct synchronization rules are not used.

1, the state of the thread1.1 Create threads in two ways, interface and thread classes. The advantage of using the interface: Better embody the object-oriented idea, can avoid the limitations of Java's single inheritance;Enhance the robustness of

Main memory and working memoryJava Virtual machine in the process of executing a Java program, it manages the memory divided into a number of different data regions, including the method area, heap, virtual machine stack, local method stack, program

Wait ()/notify ()/notifyall () in the 1.Object classWait (): leave the current thread in the waiting state and release the held object lock until another thread calls this object's thread notify ()/notifyall () method, and the current thread is

Multithreading in JavaFirst of all, before the beginning of the thread to say a problem, we know that the implementation of multi-threading principle is the CPU in different threads to do the switch operation, and a mention of multi-threading, the

In the previous blog, we explained the Java thread's memory model, see: Java Concurrent programming 2_ thread safety & memory model, and then the previous article addressed the issue of thread safety in the case of multi-threaded shared

What's the difference between collection and collections?Collection is an interface collection that provides a set of common interface methods for manipulating collection objects, designed to provide a uniform interface method for a variety of

Tag: Hose ack Time decides to synchronize trace information about comparisonOriginal link Java concurrent programming: two ways to collaborate between threads: Wait, notify, notifyall, and conditionIn the front we will have a lot of questions about

1. What are the aspects of object-oriented features?2, access modifier public,private,protected, and do not write (default) when the difference?3. Is String the most basic data type?4. Float f=3.4, is it correct?5, short S1 = 1; S1 = s1 + 1; Is it

Producers and consumers are multi-threaded classic problem, the core of producer and consumer problem is the synchronization problem, the core of synchronization problem is to ensure the integrity of the same resource by multiple threads concurrent

Java Sync LockThread synchronization is a breach of data that prevents multiple threads from accessing a data object.For example: Two threads Threada, threadb all manipulate the same object Foo object, and modify the data on the Foo object.Package

Write a multithreaded program that implements two threads, one of which completes the increment of an INT member variable of an object, that is, adding 1 each time, another thread completes the subtraction of the object member variable, that is,