How do I stop a thread pool?

The java.util.concurrent.ExecutorService interface in the Java Concurrency Toolkit defines methods for thread pool task submission, getting thread pool status, and thread pool stop. In JDK 1.8, the shutdown(), shutdown Now (), shutdown() + awaitTermination(long timeout, TimeUnit unit) methods are generally used for thread pool stopping.   1. ...

Posted on Thu, 28 Nov 2019 18:02:33 -0800 by uniboy86

I. BIO of I/O model

BIO of I/O model Basic introduction Java BIO is the traditional Java IO programming, and its related classes and interfaces are under the java.io package BIO (blocking I/O): synchronous blocking. The implementation mode of the server is to connect one thread at a time. That is, when the client has a connection request, the server needs to star ...

Posted on Thu, 28 Nov 2019 13:31:50 -0800 by Gnub

Getting Started with JavaWeb - Installing Tomcat Server in a Windows Environment

Summary: This article mainly studies how to download and install Tomcat server in a Windows environment. download Get the installation package Recommend downloading Tomcat on the official website: https://tomcat.apache.org/ This download is the latest version of 9.0.29. You can also download the historical version in the following link: https:/ ...

Posted on Thu, 28 Nov 2019 12:05:45 -0800 by waseembari1985

Assignment operators in C + + and java

#include <iostream> using namespace std; class BankAccount{ private: double balance; public: BankAccount(double openingBalance){//Initial balance balance = openingBalance; } void deposit(double amount){//Deposit money balance = balance + amount; } void withraw(double amount){ ...

Posted on Thu, 28 Nov 2019 10:32:05 -0800 by mithras

Android plays video comprehensively

1 Overview As a code Porter developed in C language, it is not easy to write an Android program. It took two days to read n posts. It felt that each post was incomplete, such as how to pass parameters before each function and how to display the results. So I wrote this blog, hoping it would be useful for Android beginners. The ...

Posted on Thu, 28 Nov 2019 09:49:18 -0800 by brad_fears

Getting echarts pictures in java background

Getting echarts pictures in java background Usage scenarios Selenium ChromeDriver Prepare an html Background code Usage scenarios In recent projects, you need to save the echarts line chart displayed in the page to word to generate a briefing Using Selenium and ChromeDriver Selenium compile group: 'org.seleniumhq.seleni ...

Posted on Thu, 28 Nov 2019 09:18:22 -0800 by kevinlcarlson

Common interface of Java written test: implementation and use of compatible interface

This article introduces the Comparable interface and how to use it to compare size and sort custom objects The following is the declaration and function of the compatible interface. You can see that it can make the inherited classes compare. You only need to call the compareTo method of the implementation class public interface ...

Posted on Thu, 28 Nov 2019 07:21:03 -0800 by AshrakTheWhite

Introduction to annotations and best practices for Java core knowledge points

Introduction to Java annotations Annotation, translated in Chinese, means annotation and annotation. Annotation in Java is an important point of knowledge, but it is often a bit difficult for beginners to understand. I personally think one of the main features of a bad technical document is to introduce professional terms with professional term ...

Posted on Wed, 27 Nov 2019 18:18:08 -0800 by adamhhh1

Source Code Analysis for Android Systems: Exploring Handler Extended Knowledge

The following classes are explained: Messenger, IdleHandler, Looper.Observer, MessageLogging 1. Messenger Messenger can be translated as a messenger, through which Message objects can be passed in different processes, and by placing the data we need to pass in Messenger, we can transfer data between processes. Messenger is a lightweight IPC sch ...

Posted on Wed, 27 Nov 2019 18:02:38 -0800 by pramodv

I. sparse array

Sparse array Basic introduction When most of the elements in an array are 0, or an array with the same value, a sparse array can be used to hold the array. As shown in the figure below: Processing method of sparse array: The record array has several rows and columns and different values; The columns and values of elements with different value ...

Posted on Wed, 27 Nov 2019 10:32:02 -0800 by El Zagna