Java

　　Recently in the Java source code, but because of their own limited English, so want to use Chinese annotation method of the source of all the methods to rewriteOnce again, the following is a small part of the landlord finishing out. I've managed

Selector Introduction: Selectors provide the ability to choose which tasks are ready to perform. From the bottom, selector provides the ability to ask if the channel is ready to perform each I/O operation. Selector allows a single thread to operate

This week we learned about event handling technology, and Java events are nothing more than keyboard events, mouse events, buttons, and so on.1. Mouse Event: Click the mouse button thing it will call three listener methods:

Design patterns, many people have been used, just do not know its name, generally a very nice system, modular do are very good, so if a new business, just need to assemble each module can meet the new business,From the point of view of the program,

1. Building JSON with GsonInitializationNew Jsonobject ();Add PropertyJsonobject.addproperty ("Name", Boolean/character/number/string);To add a sub-level JsonJsonobject.add ("json_1", jsonobject);Get JSON element propertiesJsonobject.get ("name").

for a novice class has not yet started beginners, now understand the collation of these points of knowledge is still a bit far-fetched, for many big guys to see, these understanding is somewhat superficial, but also need to understand my own

Design patterns are divided into three types: created, structured, and behavioral. whichThe created types are:Singleton, Singleton mode: guarantees that a class has only one instance and provides a global access point to access itAbstract Factory,

Direct Insert Sortpublic class Insertionsort {public static > void Sort (t[] arr) { for (int i = 1, len = arr.length; i = 0 && Cur.compareto (arr[j]) 　　Insert sort (Java implementation)

OverviewThreadpoolexecutor as a java.util.concurrent package to provide the basis for external implementation, in the form of internal thread pool to provide management task execution, thread scheduling, thread pool management and other

1 Packagecom. Class_and_object;2 3 Public classZuoYeA01 {4 5 intA//define two integers6 intb;7 String Fang;8 Public voidJia () {9SYSTEM.OUT.PRINTLN ("Result" + (A +b));Ten } One Public voidJian () { ASYSTEM.OUT.PRINTLN

Types of Java Shift operationsBasics: We know that in Java, the int type occupies 32 bits, can represent a positive number, or it can represent a negative number. A positive number is converted to binary with a maximum of 0, and the binary of

Learning situation: general.Experience: None.Feeling : I feel so naïve, Java 's GUI is not a general "fun". A program I have done run, the program also probably looked at a bit, first said layout, code is really long, grid I still accept the scope,

Development environment: JDK1.7,MYECLIPSE10The framework uses spring. Use the Maven tool (MAVEN's package Baidu can).Four steps to complete, copy and change the parameters can beFirst step: Limit the pictures in spring firstBeanId="Multipartresolver"

1.4 isAlive () method, 1.4isalive Method The isAlive () method is used to determine whether the current thread is in the active state. Thread code: public class TestThread extends Thread{ @Override public void run() { System.out.println(

Ajax obtains json data as undefined -- cause, jsonundefined -- When processing the json value sent from the server, we use two methods: 1. Use the eval () function. Var dataObj = eval ("(" + data + ")"); // converts data to a json object (Note: data

The usage and functions of the SSH framework (summarized after half a year of use by a cainiao ). The SSH framework has changed the way I write the code since I started working on it. I have learned a lot from the beginning and learned a little bit

Lombok plugin, IDE:IntelliJ IDEA First install lombok in the configured plug-in bar, and then use the following pom dependency: 　　 org.projectlombok lombok trueAnnotations: @ ToString   Generate the toString () method. By default, it prints

Time class and its conversion, time class conversion Import java. text. ParseException;Import java. text. SimpleDateFormat;Import java. util. Date; Import java. util. Calendar;   /*** Time class and its conversion*/Public class StringDate {Public

Java operation Json, java operation json1. Use Gson to build Json Initialization JsonObject jsonObject = new JsonObject(); Add attribute JsonObject. addProperty ("name", Boolean/character/number/string ); Add sub-level Json jsonObject.add("json_1",

Nginx speed limit, Note: The syntax for Versions later than nginx 1.1.8 is changed to limit_conn_zone $ binary_remote_addr zone = NAME: 10 m; NAME is the NAME of the zone, please see here