Multithreading executes tasks. The difference between Thread class, Runable interface and Callable interface

Mode 1: Implementation principle: Create a new Thread class TestThread, inherit the Thread class, rewrite the run method, instantiate the TestThread object in the main Thread, call the start() method of the object, and start a new Thread. The new Thread will automatically execute the code block of the run method. When the new Thread executes t ...

Posted by kishan on Wed, 04 May 2022 09:32:22 +0300

Study Notes [Multithreading - Section 4: Simple Foundations and Security Issues of synchronized]

thread synchronization Thread asynchronous model Each thread executes its own and has nothing to do with each other. For example, there are two threads, one is for the younger brother to eat, and the other is for the elder sister to watch TV. Neither one affects the other. thread synchronization model In my understanding, there is some kind o ...

Posted by xzazx on Tue, 03 May 2022 07:27:00 +0300

Optimizing business code with FutureTask

brief introduction FutureTask: a cancelable asynchronous calculation. FutureTask provides the basic implementation of Future. You can use FutureTask to execute tasks asynchronously and call its get method to get the returned results. Objectives of this chapter Demonstrates the code of paging query users in general. Use FutureTask to o ...

Posted by Vebut on Tue, 03 May 2022 02:51:09 +0300

java multithreading to create a thread

java multithreading to create a thread Today, let's introduce several ways to create threads. I believe you will soon be able to say two ways after learning java, inherit the Thread class or implement the Runnable interface. But today, in addition to these two ways, we also introduce the creation methods of other two threads. 1, Inherit ...

Posted by ysu on Tue, 03 May 2022 02:23:37 +0300

String thread safety

What is the difference between String StringBuffer and StringBuilder? The Java platform provides two types of strings: String and StringBuffer/StringBuilder, which can store and manipulate strings. Among them, String is a read-only string, which means that the content of the string referenced by String cannot be changed. The string objects rep ...

Posted by JayVee on Mon, 02 May 2022 09:03:49 +0300

Java thread interrupt

Java thread interrupt What is a thread interrupt ​ An interrupt is an indication to a thread that it should stop what it is doing and do something else (usually end the thread). For example, 360 is performing anti-virus scanning. When we click "stop detection", it is a thread interrupt. How a thread responds to an interrupt request ...

Posted by JamieWAstin on Mon, 02 May 2022 02:59:29 +0300

Talk about multithreaded producer consumer model

Producer consumer model In the thread world, the producer is the thread of production data, and the consumer is the thread of consumption data. In multi-threaded development, if the processing speed of the producer is very fast and the processing speed of the consumer is very slow, the producer must wait for the consumer to finish processing b ...

Posted by Mightywayne on Sun, 01 May 2022 14:28:50 +0300

JUC and contract the source code. Read reetrantlock lock()

JUC and contract the source code. Read reetrantlock lock() From the top level of the code, the default implementation of ReetrantLock is NonfairSync. The lock () method of NonfairSync is as follows, which is very simple /** * Performs lock. Try immediate barge, backing up to normal * acquire on failure. */ final void lock() { if (compareAnd ...

Posted by Aro on Sun, 01 May 2022 03:07:12 +0300

Analysis of thread false wakeup problem

  I haven't written a blog for a long time. Recently, I encountered a stumbling block in the learning process: the problem of data inconsistency caused by false wake-up in multi-threaded communication. After reading a lot of information,I also went to some bloggers' articles for advice, and found that everyone's explanations didn't get the poi ...

Posted by astaroth on Sat, 30 Apr 2022 16:29:19 +0300

Implementation of Java design pattern observer pattern and asynchronous processing mode

Observer mode structure There are four roles in the structure of observer mode: (1) Observable: a topic is an interface that specifies the methods to be implemented for a specific topic, such as adding and deleting observers and notifying observers to update data. (2) Observer: an observer is an interface that specifies the method used by a ...

Posted by dayo on Sat, 30 Apr 2022 02:39:42 +0300