java spreadsheet library

: blocking queuesNote the way to use the blocking queue itselfThe Put method is used to deposit elements to the end of the queue, and if the queues are full, wait;The Take method is used to fetch elements from the first team, and if the queue is empty, wait;The Offer method is used to deposit elements to the end of the queue, and if the queues are full, wait for a certain amount of time, and if the time period is reached, false if the insertion is not successful;The poll method is used to take e

static Boolean bbhouldsubthread = Www.yyzx66.cn/false;public static void Main (String [] args){Executorservice ThreadPool = Executors.newfixedthreadpool (3);Threadpool.execute (New Runnable () {public void www.egouyuLe.cn Run (){for (int i=0;i{Lock.lock ();Try{if (!bbhouldsubthread)Subthreadcondition.await ();forwww.yinb666.cn (int j=0;j{System.out.println (Thread.CurrentThread (). GetName () + ", j=" + j);}Bbhouldsubthread = false;Subthreadcondition.signal ();}catch (Exception e){}Finally{Lock

Http://topic.csdn.net/u/20100721/09/e066d629-f81e-4564-a939-16a7db165422.html Linux dynamic library loading error The solution is to package G ++-FPIC-I/usr/Java/jdk1.6.0 _ 19/include/-I/usr/Java/jdk1.6.0 _ 19/include/Linux/-shared-O libkeyboard_encrypt_64.so-C keyboard_encrypt.c Changed G ++-FPIC-I/usr/Java/j

Project Reference from: http://www.java1234.com/a/yuanchuang/swing2/Project video and code download address: Link: Http://pan.baidu.com/s/1pLpQw2J Password: CNCVConstruction of the project development environment: Http://pan.baidu.com/s/1ntzhAmH#list/path=%2F One, function (1), User login(2), Book category management(3), book Management(4), exit Second, tools (1), Java Programming: Eclipes (1.8 soon version)(2), Sql:mysql(3), Jdbc:jar (Mysql-connector

; private static String port= "1521"; private static String DbName; private static String Sql; private static Connection conn=null; private static PreparedStatement st=null; private static ResultSet res=null; private static int dml_res; Construction Method: Oracletools (String host,string username,string password,string dbname); MYSQLTools (String host,string username,string password,string dbname); Member Methods: EXECUTE_DQL (); //Database Query method Execute_dml (); //Database operation me

Basic knowledge of vegetable chicken crawl PitBecause of the keygen of something I will only build under WIN!! So only this is the worst!!Before has been the android under the call so file with JNI, now try Java in the win platform to call the DLL first or the old routine, directly in the DLL popped a message box the concrete flow is as follows: Define a method in Java, implement this method in C + +, pop t

Recently, in order to increase the matching rate of queries, the CMS system needs to add pinyin search fields. On the internet, it found the java open-source class library of pinyin4j, which provides conversion of Chinese to Chinese pinyin (and supports polyphonic words, I looked at his demo and decided to use it. Because in actual use, I need to consider the different arrangement and combination of polypho

First, write a Java file that contains the native method public class Myjni {public native void display (); Public native double sum (double x, double y); public static void Main (string[] args) { }}Next, compile this Java file into an. h fileJavah Myjni After executing this command, a MyJni.h file is produced in the directory Third, write a. c file that introduces just the header file #i

How is the decoration mode used by the java io library reflected?Overview There are about 85 classes in the I/O package of java, which is really complicated. Otherwise, these classes can be divided into the following four parts.Input stream output stream Byte stream InputStream OutputStream Stream Reader Writer In short, the corresponding four parts are neat, wit

Thumbnailator application description for Java thumbnail generation library, Thumbnailator is a library for generating thumbnails with smoother Java interfaces. The scale-down process is simplified by using the API to provide existing image files and thumbnails of image objects. Two or three lines of code can generate

When you start the daemon thread: Sbin/start-dfs. SHThe following error alert appears:WARN util. nativecodeloader:unable to load Native-hadoop library for your platform ... using Builtin-java classes where applicableWorkaround:Download the corresponding version below the URL (I'm using hadoop-2.5.2)Http://dl.bintray.com/sequenceiq/sequenceiq-binAfter downloading, unzip to the native directory of Hadoop, ove

Geotools is a Java class library that provides many standard classes and methods to process spatial data. At the same time, this class library is built on the OGC standard and is an implementation of the OGC idea. OGC is an international standard, so geotools will surely become the main tool for open-source space data processing in the future. Most open-source so

Java Basic Class Library:(a), enter the relevantMain (string[] args): setting input parametersInput class; Scanner:scanner sc=new Scanner (system.in);(ii) System-related classes1,system class: Gets the environment variables and system properties of the current running platform2,runtime class; Get the parameters of the JVM(c), Common class1,object class: Cloning Method (clone) is simply a simple copy of an o

【Core JavaLearning notes Java SE8 Stream library stream from iteration to streamIf you want to calculate how many long words are in a text (letter >12). Iterative type:getlist();//虚构方法，获得一个Listlong0;for(String w:words){if(w.length()>12) count++;} Flow type:getlist();//虚构方法，获得一个Listlong count = words.stream().filter(w->w.length12).count(); The benefits of a streaming expression relative to an iterati

Jpinyin is a kind of Java open source class library of Chinese characters to pinyin, and has made some improvements on the basis of pinyin4j function."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 conversi

The first step is to find Backtrace:keyword first, and then find the local pc 0000088b/system/lib/libndk_04.so (sayhello+98) where the library file should be wrong. 08-13 17:08:28.041 I/debug (163): BackTrace:08-13 17:08:28.041 I/debug (163): #00 pc 00021fc0/system/lib/libc.so (tgkill+12)08-13 17:08:28.041 I/debug (163): #01 pc 00013081/system/lib/libc.so (pthread_kill+48)08-13 17:08:28.041 I/debug (163): #02 pc 00013295/system/lib/libc.so (raise+10)0

) {Integer ID= (Integer) hit.getsource (). Get ("id"); String name= (String) hit.getsource (). Get ("name"); String function= (String) hit.getsource (). Get ("Funciton"); List.add (NewEsbean (ID, name, function)); } } returnlist; }The third step is to write the entity class Esbean Public class esbean{private String reg_id; Private String organization; Omitting setter and getter methods; Public Esbean (String reg_id,string organization) {Super(); this. reg_id=reg_id; this. organiz

1 The Main method runs the parameters of the Java program:The following is a detailed explanation of why the main method uses this method to sign the 1.public modifier: the Java class is called by the JVM and, in order for the JVM to be free to invoke the main () method, exposes the method using the public modifier. 2.static modifier: When the JVM invokes this main method, it does not first create the objec

() {intData=Threadlocal.get (); System.out.println ("B from Thread" + thread.currentthread (). GetName () + "" +data); } }}The above example needs to be modified to use this kind of internal static class is not scientific ah.Java Thread: Atomic (atomic) JDK 1.5 new featuresJava Concurrency Programming: the use of thread pools PackageThread;ImportJava.util.concurrent.ExecutorService;Importjava.util.concurrent.Executors;ImportJava.util.concurrent.TimeUnit; Public classThreadpooltest { Public S

Click to enter _ more _java FAQ-base Class Library1, Java.math package has what functionThe Java.math package provides a mathematical class in Java. Includes basic floating-point libraries, complex operations, and arbitrary-precision data operations. Main classes such as:?The classes in math are described below: arbitrary length shapingBigInteger, the arbitrary length of the non-variable shaping. Because the base type has a limited length of sha