java plotting library

It seems difficult to obtain Mac information in Java. But I saw a Java library, and it feels pretty good. Write it down first. Who has studied how to give me a speech and promote each other's progress ;) 1) third-party Java library. (Try this: http://netresearch.ics.uci.edu/

Java calls C + + dynamic-link library using JNIUse JNI to connect DLL dynamic-link libraries and invoke functions in themFirst C + + write good correlation function, file name is test.cpp, use g++ compile as DLL file, instruction is as follows:g++-shared-wl,--kill-at,--output-def,test.def-o test.dll test. CPPThis creates both the Test.def and Test.dll files at the same time as the path.By the way,. lib file

traversevar: sets a variable name to store values that are traversed from an array or collectionBegin , end: Specifies the start, ending position, and all of the default traversal that needs to be traversedStep: The number of skips per traversal, the default value is 1Varstatus: Specifying a loop state variableIndex: The indexed value in the original collection, starting from 0Count: Current loop count, starting from 1,First: Whether it is the current loopLast: Whether it is the final of the cu

The purpose of the Java Container class library is to "save the object" and divide it into two different concepts: Collection. A sequence of independent elements that obey one or more rules. The List must save the element in the order in which it was inserted, and Set cannot have duplicate elements. The queue determines the order in which objects are produced, usually in the same order in which the

Countdownlatchclass Waitingtask implements Runnable {private static int counter = 0;//count PrivateFinal int id = counter++;p rivate static random rand = new random;p rivate final countdownlatch latch; Waitingtask (Countdownlatch latch) {this.latch = latch;} The Task @Overridepublic void Run () {try {///Call Countdown () is not blocked when the call is generated. Only the call to await will be blocked until the count reaches the 0//waiting for the problem to be solved by calling await () on thi

Java Compression Class Library _ support encryption decompression. zippublic static void Unzip (File zipfile, String dest, String passwd) throws Zipexception {ZipFile zfile = new ZipFile (ZipFile); First create the ZipFile point to the. zip file on the diskZfile.setfilenamecharset ("GBK"); Set the file name encoding to be set in the GBK systemif (!zfile.isvalidzipfile ()) {//verify that the. zip file is val

()) { return-1;//source file not found, return-1 } //If the destination path does not exist, the path is createdFile OutputFile =NewFile (destfile); if(!Outputfile.getparentfile (). exists ()) {Outputfile.getparentfile (). Mkdirs (); } String openoffice_home= "C:\\Program Files (x86) \\OpenOffice 4";//here is the OpenOffice installation directory, in my project, in order to facilitate the expansion of the interface, not directly written li

Reprinted fromStupid BLOG:Http://www.mkv8.com /? P = 42 The following describes how to use the java jcifs class library to access the shared file code on network peers.Related Class Library: http://www.mkv8.com /? P = 48 1 public class UploadDownloadUtil2 {34 /**5 * Copy files from the shared directory to the local device6 * @ param remoteUrl: file path in the s

The following error is reported:Workaround:1. Increase Debugging informationAdd the following information in the hadoop_home/etc/hadoop/hadoop-env.sh file2. Perform another operation to see what errors are reportedThe above information shows that 2.14 GLIBC library is requiredWorkaround:1. View the libc version of the system (LL/LIB64/LIBC.SO.6)Display version is 2.12The first solution, using the 2.12 version of glibc, to recompile HadoopThe second so

After writing debugging for a long time, the boundary does not merit rationale, specific see JDK class library, the following is only the basic implementation:Import java.util.iterator;/** * Class Name: Mylinkedlist Description: LinkedList Basic Implementation */public class mylinkedlist Private node Basic implementation of Java class library linklist

This is a concurrent class library developed by Rice University, not very popular, but it's more useful, GitHub addressThe following is a brief introduction:PCDP is a shared-memory, pedagogical, parallel programming framework. PCDP ' s design, implementation, and APIs emphasize simplicity to make it straightforward to use for programmers new to Parallel programming. PCDP supports task parallelism, loop parallelism, actor parallelism, bulk synchronizat

Good things to share to recommend, here to recommend a Java platform under the open-source diagram of the library Jfreechart, related resources (source code, demo source, development Guide) has been uploaded to the CSDN resources, need to download them yourself.Jfreechart's charting capabilities are very powerful, covering almost any chart you want, and it's cool to draw. Look at the main jfreechart:Before

requests Support for URL parameter substitution and query parameters The returned result is converted to a Java object (the returned result can be JSON, protocol buffers) Support for multipart requests and file uploads Specific use of documentationAnnotations on function and function parameters declare the request methodRequest MethodEach function must have an HTTP annotation to indicate how the request was requested and the URL

is the full path and method of the Java class, separated by an underscore.Note: If the project calls out-of-the-box DLL files, we must know the declaration of the method in C, and create the corresponding package structure in the Java program, if the path does not correspond, run the Java program will be error, personal lessons. (I did the project to adjust the

= -5.28f; System.out.println ("Absolute value of" + F1 + "is:" + math.abs (F1));System.out.println ("Absolute value of" + F2 + "is:" + math.abs (F2));Double D1 = 3.324; Double D2 =-9.324;System.out.println ("Absolute value of" + D1 + "is:" + math.abs (D1)); System.out.println ("Absolute value of" + D2 + "is:" + math.abs (D2));Long L1 = 3L;Long L2 = -4l; System.out.println ("Absolute value of" + L1 + "is:" + math.abs (L1));System.out.println ("Absolute value of" + L2 + "is:" + math.abs (L2));}}I

(x) {x.notify ()//or wait () }2. Traditional timer Technology Review (jdk1.5 ago) Public classTraditionaltimertest {Static intCount = 0; Public Static voidMain (string[] args) {//Execution starts in 10 seconds and executes every 3 seconds NewTimer (). Schedule (NewTimerTask () {@Override Public voidrun () {System.out.println ("Bombing ..."); } }, 10000,3000); /*** Required: 2 seconds, 4 seconds interval to perform scheduled tasks*/ classMytimertaskextendstimertask{@Overr

Bouncy Castle is a lightweight, open-source cryptographic package for the Java platform. It supports a large number of cryptographic algorithms and provides the implementation of JCE 1.2.1. Since bouncy Castle is designed to be lightweight, it can be run from J2SE 1.4 to J2ME (including MIDP) platforms. It is the only complete cryptographic package that runs on MIDP.Also available in the C # version of theAddress: http://www.bouncycastle.org/csharp/

The difference between Collection and collections in Http://www.cnblogs.com/dashi/p/3597937.htmlJava 1, Java.util.Collection is aCollection Interface (a top-level interface of a collection Class)。 It provides a common interface method for basic manipulation of collection objects. The collection interface has many specific implementations in the Java class Library.The meaning of the collection interface is to provide a maximum unified operation for a v

parameters in the Update method in the Observer interface:O: The object that specifically represents the observable class that issued the notification. That indicates which of the observers sent the notification. ARG: The content that needs to be observed. the object to be observed by the observer is the class that inherits from the observable. You must call the Super.setchanged () method and the Notifyobservers (XXX) method when sending notifications. This design pattern is a mechanism of

System.out.println ("Modify failed.") "); Operator.printallbook (); } else if (choose = 3) {printmenu (); Break ' Else {System.out.println (' input illegal. "); }} void Findboo () {Scanner scan = new Scanner (system.in); Operator Operator = new Operator (); String name = ""; int id =-1; while (true) {System.out.println ("Please enter the way to find the book: 1, Number/2, title/3, Return to the main menu"); int choose = Scan.nextint (); if (choose = = 1) {Sy