java spreadsheet library

Thumbnailator is a thumbnail build library that is smoother for the Java interface. By simplifying the thumbnail process from the APIs that provide existing image files and image objects, two or three lines of code can generate thumbnails from existing pictures and allow fine-tuning of thumbnail builds while maintaining the minimum amount of code that needs to be written. It also supports batch generation o

Java frameworkspring, OFBiz 　 Persistence Frameworkhibernate, IBATIS 　 Web frameworkstruts, Tapestry, WEBWORK2, Echo aspect-oriented Framework AspectJ, Aspectwerkz, JBOSSAOP 　 Web Services Toolsaxis 　 Portalexo Platform, Liferay, Jakarta jetspeed, Pluto 　 Rule Enginedrools 　 Workflow Engineosworkflow jBpm 　 Jmsopenjms 　 Cmsinfoglue, JBoss nukes, OpenCms 　 Scripting Languages Groovy, Jython 　 Template enginesvelocity, Freemarker 　

1 /**2 * TODO download files to local3 * @authorNadim4 * @date Sep One, 11:45:31 AM5 * @paramFILEURL Remote Address6 * @paramfilelocal Local Path7 * @throwsException8 */9 Public voidDownloadFile (String fileurl,string filelocal)throwsException {TenURL url =NewURL (FILEURL); OneHttpURLConnection Urlcon =(HttpURLConnection) url.openconnection (); AUrlcon.setconnecttimeout (6000); -Urlcon.setreadtimeout (6000); - intCode =Urlcon.getresponsecode (); the

logarithmMath.rint the nearest integer (perhaps larger or smaller than a certain number) from a certain numberMath.Round, return int or long (previous function returns double type)Math.random returns a random number between 0 and 1.Java.math.BigInteger (Large integer):BigInteger bi1=new BigInteger ("1234567890123456890");BigInteger bi2=biginteger.valueof (123L);Bi1=bi1.add (BI2);//b1+b2Bi1=bi1.multiply (BI2);//b1*b2Bi1=bi1.subtract (BI2);//b1-b2Bi1=bi1.divide (BI2);//B1/B2Java.math.BigDecimal (

and naming are compared specifications, this should be improved.In addition, in addition to using the methods above, a "and faku" approach to using JDK5 is provided to resolve this issue:Package Cn.edu.hpu.test;import Java.util.concurrent.executors;import Java.util.concurrent.executorservice;import Java.util.concurrent.locks.lock;import Java.util.concurrent.locks.reentrantlock;import Java.util.concurrent.locks.condition;public class threadtest5{private static lock lock = new Reentrantlock ()

) {E.printstacktrace ();}*/Pointer ptr = pointer.createpointerfromstring (Mgrip);Getplayurl.setparameter (0, Mgrip);Getplayurl.setparameter (1, 10087);Getplayurl.setparameter (2, 123);Getplayurl.invoke ();String url = jnative.getmemoryasstring (Getplayurl.getretvalasint ());url = jnative.getmemoryasstring (Getplayurl.getretvalasint (), 260, true);/*try {url = new String (Url.getbytes (), "utf-8");} catch (Unsupportedencodingexception e) {TODO auto-generated Catch blockE.printstacktrace ();}*/Sys

,booktablemodel model,int Row) {Super (Owner,title, type); Bookmodel=model;rownum=row;booknumlabel=new JLabel ("ISBN:"); booknamelabel=new JLabel ("title:"); bookwriterlabel= New JLabel ("Author:"); Bookpublishlabel=new JLabel ("publisher:"); bookpricelabel=new JLabel ("Price Booktimelabel=new JLabel ("Publication Time:"); booknumtext=new JTextField (10); Booknametext=new JTextField Bookwritertext=new JTextField (10), Bookpublishtext=new JTextField (bookpricetext=new JTextField); Booktimetext=

Cause 1: Jvm.dll does not exist in the given directory.Workaround: (1) Reinstall the JRE or JDK and configure the environment variables. (2) Copy a jvm.dll placed in the directory.Cause 2:eclipse version is inconsistent with JRE or JDK versionWorkaround: Either both install 64-bit, either install 32-bit, not one is 32 bit one is 64 bit.　　　　　　　First determine how many bits of eclipse, or 64, in the Eclipse installation directory in the Eclipse.ini file, under "--launcher.library", if there is win

)};9Arrays.sort (Dogs,Newdogcomparator ());Ten for(Dog dog:dogs) { One System.out.println (dog); A } - } - the}1 Public classDog {2 PrivateString name;3 Private intAge ;4 PublicDog () {5 Super();6 //TODO auto-generated Constructor stub7 }8 PublicDog (String name,intAge ) {9 Super();Ten This. Name =name; One This. Age =Age ; A } - PublicString GetName () { - returnname; the } - Public

)-1;//Week A intHour=c.get (Calendar.hour_of_day);//when at intMinute=c.get (Calendar.minute);//points - intSecond=c.get (Calendar.second);//seconds -String[] weeks={"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}; -SYSTEM.OUT.PRINTLN (year+ "year" +month+ "month" +day+ "Day" + "+weeks[week]+hour+": "+minute+": "+second); - //use time date format mode -DateFormat df=NewSimpleDateFormat ("yyyy mm month DD Day HH:MM:SS SSS E"); inString

What is a data structure :The data structure is the way that the computer stores and organizes it.A data structure is a collection of elements that have one or more specific relationships to each othertypically, a well-chosen data structure can lead to higher operational or storage Efficiency. Data structures are often associated with efficient retrieval algorithms and indexing Techniques. Common data structures, array (array), stack (stack), list of links (Linked list), hash table (hash), queue

) {SetSets.newhashset (); //Create a constraintConstraintNewConstraint() {@Override publicstring checkelement (string element) {//non-null ValidationPreconditions.checknotnull (element); //length limit 5-20, otherwise errorpreconditions.checkargument (element.length ()>= 5 element.length () , element); returnelement; } }; SetConstraints.constrainedset (sets, constraint); //cs.add (null); Error java.lang.NullPointerException//cs.add ("qaz"); Error Java.lang.IllegalArgumentException

blockE.printstacktrace (); } catch(IOException e) {//TODO auto-generated catch blockE.printstacktrace (); } } }; Service.execute (run); }//block HTTP call private static voidSendrequestasync (String event,string username) throwsInterruptedexception, IOException {requestconfig requestconfig =Requestconfig.custom (). SetSocketTimeout (+)//HTTP timeout. Setconnecttimeout (+). Build (); Connection Timeout Closeablehttpasyncclient httpclient =Httpasyncclients.custom (). Setdefaultrequestconfig (Requ

CD hadoop-2.4.1/lib/nativeFile libhadoop.so.1.0.0 to view your own version of HadoopView dependent libraries with the LDD commandLDD libhadoop.so.1.0.0LDD--version native version of GCChttp://blog.csdn.net/l1028386804/article/details/51538611Should be due to the GCC version of the problem, this will be compiled for a long time, so the solution is to comment out the log4j inside, or in the beginning of the installation of Linux after the upgrade and glibcHttp://www.aboutyun.com/thread-12343-1-1.h

The child thread is 10 times, then the main thread 100 times, then the child thread 10 times, and then the main thread 100 times. Cycle 50 times PackageCn.itcast.heima2; Public classtraditionalthreadcomunication { Public Static voidMain (string[] args) {//TODO auto-generated Method StubBusiness Business =NewTraditionalthreadcomunication ().NewBusiness (); NewThread (NewRunnable () {@Override Public voidrun () {//TODO auto-generated Method Stub for(inti = 0; I ) {business.sub (i);

Two ways to create threads traditionally PackageCn.itcast.heima2; Public classTraditionalthread { Public Static voidMain (string[] args) {//TODO auto-generated Method StubThread thread =NewThread () {@Override Public voidrun () { while(true) { Try{Thread.Sleep (500); } Catch(interruptedexception e) {//TODO auto-generated Catch blockE.printstacktrace (); } System.out.println (Thread.CurrentThread (). GetName ()); System.out.println ( This. GetName ());

-based blocking queue, bounded queue1 New Arrayblockingqueue); 2 Array.put ("a"); 3 Array.put ("B"); 4 Array.add ("C"); 5 Array.add ("D"); 6 Array.add ("E"); 7 // Array.add ("F"); 8 System.out.println (Array.offer ("A", 3, Timeunit.seconds)); 　　　　Third type: linkedblockingqueue, blocking queue, no queue1linkedblockingqueueNewLinkedblockingqueue();2Q.offer ("a");3Q.offer ("B");4Q.offer ("C");5Q.offer ("D");6Q.offer ("E");7Q.add ("F");8

deployment script joins a"Coyy" Copy Ueditor.jar ~tomcat/.../lib/Later found that this method still has a problem, if the Tomcat War package has not been extracted by Tomcat, how to move to the Lib directory?If that project persists, a will be better, but only once.D. Manually place a ueditor jar in the Maven repository, unlike a private repository, and other projects are in a local repository.Local Configuration: E:\MavenRepository\com\baidu\ueditor\ueditor\1.1.1\ueditor-1.1.1.jarConfiguration

indexwriterconfig ();04. Set a schema for config Create: Erase the original index file each time and rebuild the new index fileConfig.setopenmode (IndexWriterConfig.OpenMode.CREATE);05. The index writer requires two entry parameters, one is the directory, the other is the configurationIndexWriter writer=new IndexWriter (directory,config);06. Prepare to add content to the index libraryFile File = new file (DataDir);07. A collection of files under a directoryfile[] files = file.listfiles ();for (

http://www.verejava.com/?id=16993076554196/** 知识点: Math 数学运算类*/public class TestMath{ public static void main(String[] args) { //取绝对值 System.out.println(Math.abs(-2)); //取大于小数的最小整数 System.out.println(Math.ceil(1.6)); System.out.println(Math.ceil(1.1)); //取小于小数的最大整数 System.out.println(Math.floor(1.6)); System.out.println(Math.floor(1.1)); //小数部分四舍五入 System.out.println(Math.round(1.6)); System.out.println(Math.ro