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vue.js--Loop (Java, jstl tag Library, database)

over the element after the first element in the list collection (excluding the first element):b> BR>Part of the LoopC:foreachItems= "${requestscope.list}"var= "keyword"Varstatus= "id"begin= "1">${id.index} ${keyword}BR> C:foreach> Body> Iv. Database CycleCURSOR Mycur is SELECT name FORM t_student; BEGIN -Opens open mycur; LOOP FETCH mycur into V_name; Exit exit when no data is Mycur%notfound; --print display; END LOOP; END; vue.js--L

Java Common class Library time operation Class--date, Calendar, DateFormat, SimpleDateFormat, and instance operations

class Datedemo07{public static void Main (String args[]) {DateTime DT = new DateTime (); SYSTEM.OUT.PRINTLN ("System date:" +dt.getdate ()); System.out.println ("Chinese Date:" +dt.getdatecomplete ()); System.out.println ("Timestamp:" +dt.gettimestamp ());}};Summary:1, DateFormat can be used directly, but it is an abstract class, you can specify the locale according to the locale to get different date and time display effect. 2, SimpleDateFormat class is DateFormat subclass, generally speaking

Java class Library--jpinyin of Chinese characters to pinyin

Original: http://blog.csdn.net/stuxuhai/article/details/8932715"Jpinyin Main Features"1, accurate, perfect font;Unicode encoding from the 4e00-9fa5 range and 3007 (0) of the 20,903 Chinese characters, Jpinyin can convert all the Chinese characters except the 46 allogeneic words (the non-standard pinyin);2, pinyin conversion speed fast;After testing, the conversion of Unicode encoding from the 4e00-9fa5 range of 20,902 Kanji, Jpinyin takes about 100 milliseconds.3, multi-pinyin format output supp

Java example of asynchronous execution of multiple HTTP requests (requires Apache HTTP class library)

Import Java.util.concurrent.countdownlatch;import Org.apache.http.httpresponse;import Org.apache.http.client.config.requestconfig;import Org.apache.http.client.methods.httpget;import Org.apache.http.concurrent.futurecallback;import org.apache.http.impl.nio.client.CloseableHttpAsyncClient; Import org.apache.http.impl.nio.client.HttpAsyncClients; public class Asyncclienthttpexchangefuturecallback {public static void main (final string[] args) throws Exception { Requestconfig requestconfig =

Java Dependency Injection Library Framework Dagger source Analysis (i)

be injected and the keys associated with them.Look up @Inject-annotated constructors. If there ' s no @Inject-annotatedconstructor, use a default public constructor if the class have otherInjections. Otherwise treat the class as non-injectable.Find the annotated constructor, if there is no already annotated constructor, and this class has other annotations, use a constructor of the default public type.Otherwise, this class is not to be annotated. Copyright NOTICE: This article for Bo Master ori

Java third-Party library summary

1. OKHttp, useful HTTP serviceWebsite address: http://square.github.io/okhttp/1) Get HTTP file contents1Okhttpclient client =Newokhttpclient ();2 3String run (string url)throwsIOException {4Request Request =NewRequest.builder ()5 . URL (URL)6 . Build ();7 8Response Response =Client.newcall (Request). Execute ();9 returnresponse.body (). String ();Ten}2) Send POST request1 Public Static Finalmediatype JSON2= Mediatype.parse ("Application/json; Charset=utf-8 ");3 4Okhttpclient client =Newokhttp

"Open source Java Game Framework Libgdx theme" -11-Core Library-Actor class

PublicFirsrtactor () { - This. Init (); - } - Private voidinit () { +Texture=NewTexture ("Badlogic.jpg"); - } + @Override A Public voidDraw (Batch batch,floatParentalpha) { atBatch.draw (texture,0,0); - } - -}1 PackageCom.mygdx.useactor;2 3 ImportCom.badlogic.gdx.ApplicationAdapter;4 ImportCom.badlogic.gdx.Gdx;5 Importcom.badlogic.gdx.graphics.GL20;6 ImportCom.badlogic.gdx.graphics.g2d.SpriteBatch;7 /**8 * Game main class, using actors9 * @authorJack (L

031113_ "11th: Java Common Class Library" _ Comparator (comparable, Comparator)

binarytree{Class node{//Declaration of a Node classprivate comparable data; Save the specific contentPrivate Node left; Save ZuoziPrivate Node right; Save Right subtreePublic Node (comparable data) {This.data = data;}public void AddNode (Node newNode) {Make sure it's on the Zuozi or right subtree.if (NewNode.data.compareTo (this.data) if (this.left==null) {This.left = NewNode; Set the new node directly to Zuozi}else{This.left.addNode (NewNode); Continue judging down}}if (NewNode.data.compareTo

Java Multi-Threading and concurrency Library Advanced application-Tool class Introduction

Java.util.concurrent.LockLock is more object-oriented than the synchronized in the traditional threading model, similar to the lock in life,The lock itself should also be an object. Code fragments executed by two threads to achieve the effect of a synchronous mutex, they must use the same lock object.Lock replacement synchronized  classOutputer {lock lock=NewReentrantlock (); Public voidoutput (String name) {intLen =name.length (); Lock.lock (); Try{ for(inti = 0;

Java Multi-Threading and Concurrency Library Advanced application-callable and future application

executor = Executors.newfixedthreadpool (10); CompletionserviceNewExecutorcompletionservice(executor); for(inti = 0;i){ Final intSeq =i; Completionservice.submit (NewCallable() {@Override PublicInteger Call ()throwsException {thread.sleep (NewRandom (). Nextint (5000)); returnseq; } }); } for(inti = 0;i//waiting to get results Try{System.out.println (Completionservice.take (). get ()); } Catch(Exception e) {e.printstacktrace (); }; }

Java Core Class Library-io-io overview

. According to the function of the Division: node flow and packaging flow.four basic streams : Byte input stream, byte output stream, character output stream, character input stream BYTE stream Character Stream Output stream OutputStream Writer Input stream InputStream Reader The four basic streams are abstract classes : The other flows are inherited from the four main classes.We cannot create four base stre

Using the struts tag library, the JSP page reports: Java. Lang. classnotfoundexception: COM. opensymphony. xwork2.util. textutils

My solution is: Don't use xwork-2.1.6.jar, for xwork-2.1.2.jar! The struts tag library is introduced in the JSP page: Write a simple form, JSP error after running result: Java. Lang. classnotfoundexception: COM. opensymphony. xwork2.util. textutils Literally, we already know the cause: the textutils class cannot be found. Take a lookCodeNo error. OK. The code is correct. That's anot

Java Core Class library-io-merge stream

Merge stream/Sequential stream (Sequenceinputstream):is to combine multiple input streams into a single Stream object.1 Public classSequenceinputstreamdemo {2 Public Static voidMain (string[] args)throwsException {3 //To create a sequential stream object4Sequenceinputstream in =NewSequenceinputstream (NewFileInputStream ("Stream.txt"),5 NewFileInputStream ("Stream2.txt"));6 7 byte[] buffer =New byte[1024];8 intLen =-1;9 while(len = in.read (

Java Core class library-io-byte array stream/memory stream

Memory Stream (Array stream):The data is temporarily present in the array and will be retrieved from the array later.1. Byte memory stream: Bytearrayinputstream/bytearrayoutputstream2. Character Memory stream: Chararrayinputstream/chararrayoutputstream3. String stream: Stringreader/stringwriter (storing data in an array)BYTE memory stream: Public classBytearraydemo { Public Static voidMain (java.lang.string[] args)throwsException {//byte array output stream: program-to-memoryBytearrayoutputstrea

Java Core Class Library-io-wrapper flow overview and buffering flow principle

, Len)); - } -Bin.close ();}BufferedWriter and BufferedReader Public Static voidMain (string[] args)throwsIOException {//OutputBufferedWriter out =NewBufferedWriter (NewFileWriter ("Stream.txt",true)); Out.write ("Hoe wo Day Copse"); Out.newline ();//line BreakOut.write ("Sweat wo xia tu"); Out.close (); //inputBufferedReader in =NewBufferedReader (NewFileReader ("Stream.txt")); Char[] buffer =New Char[1024]; intLen =-1; while(len = in.read (buffer))!=-1) {System.out.println (New

Java Programming (14.1)-----The preliminary design of library Management system internal function chapter

= new Scanner (system.in);d o {int choice = 0;do {System.out.println ("\ n---------------\ n"); System.out.println ("1. New book "); System.out.println ("2. Delete the book "); System.out.println ("3. Changes to the book "); System.out.println ("4. View all Books "); System.out.println ("5. Find books "); System.out.println ("6. Borrowing "); System.out.println ("7. Return "); System.out.println ("8. View Leaderboard "); System.out.println ("9. Exit system "); System.out.println ("\ n----------

(Dark Horse Java multi-threading and Concurrency Library advanced application) 02 Traditional timer Technology Review

Code Listing 1: PackageCn.itcast.heima2;ImportJava.util.Calendar;ImportJava.util.Timer;ImportJava.util.TimerTask; Public classTraditionaltimertest { Public Static voidMain (string[] args) {NewTimer (). Schedule (NewTimerTask () {@Override Public voidrun () {System.out.println ("Outer:boom!"); } },10000,3000); while(true) {System.out.println (Calendar.getinstance (). Get (Calendar.second)); Try{Thread.Sleep (1000); } Catch(interruptedexception e) {//TODO auto-generated Catch blockE.prints

Spark2.2.0 Java introduces Mllib library in Pom.xml

Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"xsi:schemalocation= "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" >Spark2.2.0 Java introduces Mllib library in Pom.xml

(Dark Horse Java multi-threading and concurrent Library advanced application) 05 The concept and function of shared variables in thread scope

;ImportJava.util.Random; Public classThreadscopesharedata {Private Static intdata = 0; Static Long[] seed =New Long[] {12345612, 654321 }; Private StaticHashmapNewHashmap(); Public Static voidMain (string[] args) {NewThread (Newthreadscopesharedata.myrunnable () {@Override Public voidrun () {//TODO auto-generated Method Stubdata =MyRunnable.rd.nextInt (); System.out.println (Thread.CurrentThread (). GetName ()+ "has put data:" +data); Threaddata.put (Thread.CurrentThread (), data

Common library of Basic Java Knowledge (1)

)); System.out.println (s); }}The date of the above System.out.println (new date ()) output is not a habit, and the following will make you more vulnerable:DateFormatimport Java.text.dateformat;import java.util.Date; public class Formatdemo {public static void main (string[] args) {//TODO auto-generated method Stub Date d = new date (); DateFormat f = dateformat.getdateinstance (); //get the default date formatting instance DateFormat ff = dateformat.getdatetimeinstance ();

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