udemy java 8 course

The flow we choose is DataOutputStream and DataInputStream, and the next time we explain the differences between the various streams in Java.1. We create the object first:1 Private NULL ; 2 Private null;2. You can then use the incoming socket in the constructor method to define the object you just created:1 PublicClienthandlethread (socket socket) {2 This. Socket =socket;3 This. Inittimer ();4 Try {5

(ASCII ox3f) in the generated Gb2312/unocode string. If you write a library, write a file, and so on, you will write the question mark directly. Of course, there will be a cottage way: the direct substitution question mark is a space. But this way, the original question mark will also be killed.When using UTF-8 for HtmlDecode, the beginning of the statement (nbsp;), will be automatically converted into thi

Research on Android multithreading (8) -- Understanding Atomicity in Java and multithreading in android1. What is atomicity? Atomicity is the smallest unit in the world and is severable. For example, if the = 0; (a is not of the long and double types) type, this operation is an atomic operation. For example, a ++ is actually a = a + 1; it is split, so it is not an atomic operation.II. The role of atomic ope

The code looks a bit messy and a little complicated! It's not complicated to try it at one pace! Of course, the premise is to understand the idea of the algorithm!Package Yxd.sf.eightcoins;public class Eightcoins {public static int compareTo (int[] coins, int[] left, int[] right) {int Lefttotal = 0;int Righttotal = 0;int Fakecoin = 0;int coinssize = 0;if (coins.length% 2 = = 0) {coinssize = COINS.LENGTH/2 ;//The current coin is divided into two halve

lock requires all read locks to be freed, a deadlock occurs if there are two read lock views that acquire a write lock without releasing the read lock. Lock get Interrupt Both the read lock and the write lock support the acquisition lock during the outage. This is consistent with the exclusive lock. Condition variable The write lock provides support for the conditional variable (Condition), which is consistent with the exclusive lock, but the read lock do

; public Demo(String name, int age){ this. Name = name; this. Age = Age; } public void say(){ System. Out. println("The name of the website is" + name + ", has been established" + Age + "Year"); } public static void main(String[] args) { demo obj = New demo("Micro School", 3); Obj. Say(); } } Operation Result:The name of the site is the Micro School, has been set up for 3 yearsThe scope of the formal parameter is the en

This article is based on Oracle Java official documentation, after personal practice to organize and accumulate, for reference only. 1 Overview JDK 8 introduces a new date-time APIs, consisting of the main package java.time and 4 child packages: Java.time java.time.chrono java.time.format java.time.temporal java.time.zone Method naming Specification prefix Method Type Use Of

Think in Java (8): Holding object, thinkjava1. Differences between various mapsHashMap: Does not store its elements in any obvious Order (same as HashSet)TreeMap: stores keys in ascending order of comparison results (same as TreeSet)LinkedHashMap: stores keys in the insert Order (same as LinkedHashSet)2. ListIterator is a more powerful sub-type of Iterator. Iterator can only move forward, but ListIterator c