java class diagram tool

-points that are said here can be n threads, or the n execution steps of a 1-line thread. When using multiple threads, you only need to pass the Countdownlatch reference to the thread.Other methodsIf there is a parsing sheet thread processing is slow, we cannot let the main thread wait, so we can use another await method with the specified time, await (long time, timeunit unit): This method waits for a certain period, The current thread is no longer blocked. Join also has a similar approach.Note

The following code mainly calls 2 common functions of the tool class, Singletonlist and EmptylistString[] init = {"One", "one", "three", "one", "one", "three"}; List List = new arraylistThe list that they return is immutable. Singletonlist has only one element and is final. private static Class SingletonlistFor Emptylist public static final List empty_list =

this.totalcount;}/*** Total Pages taken*/Public long Gettotalpagecount () {if (totalcount% pageSize = = 0)return totalcount/pagesize;Elsereturn totalcount/pagesize + 1;}/*** Data Capacity per page*/public int getpagesize () {return pageSize;}/*** Records in the current page*/Public Object GetResult () {return data;}/*** Take the current page number, page number starting from 1*/public int Getcurrentpageno () {return start/pagesize + 1;}/*** Do you have the next page?*/public Boolean hasnextpage

Encapsulates common reflection-related methodspublic class Reflectutil {/** * gets class through Classpath * * @author lhy Java Reflection Tool Class encapsulation

//the tool class can be implemented by automatically generating the corresponding Java entity class given a specified database table name. Package com.iamzken.utils; Import Java.io.BufferedWriter; Import Java.io.File; Import Java.io.FileWriter; Import java.io.IOException; Import Java.net.URL; Import java.sql.Connect

The example is how to convert a Student object to a JSON string, and in practice we can convert any Java class to a JSON string, and the implementation is very simple, you just need to create an Gson instance, then pass the object that will be converted to the JSON string, and invoke the instance's ToJ Son method. Import Com.google.gson.Gson;Import Java.util.Calendar;public

1. The tool class method for using the INT data when transferring data using the TCP protocolConvert Int data to byte arraypublic static byte[] Inttobytearray (int data) {Byte[] result = new BYTE[4];Result[0] = (byte) ((Data >>) 0xFF);RESULT[1] = (byte) ((Data >>) 0xFF);RESULT[2] = (byte) ((Data >> 8) 0xFF);RESULT[3] = (byte) (Data 0xFF);return result;}Converts a 4-byte array of bytes into Int datapubli

!"); System.out.println ("Session connected!"); /*sftp.setfilenameencoding ("UTF-8"); Sftp.*/Channel= Sshsession.openchannel ("SFTP"); Channel.connect (); SFTP=(CHANNELSFTP) channel; //determine if the current upload path exists Try{Vector//the first path does not exist and will error if(Vector = =NULL) { //Sftp.rmdir (dirpaht);Sftp.mkdir (DIRPAHT); } }Catch(Exception e) {e.getmessage (); Sftp.mkdir (DIRPAHT);

Sequenceinputstream can be seen as an ordered set of multiple inputstream objects. When the data of an inputstream object is read, it automatically retrieves the next inputstream object for reading until all the inputstream objects are read. With this feature, we will compile a file splitting and merging tool. Instructions for use: Sequencedemo [Option] [filepath] [number] Option: -C: indicates the file to be merged. -S: indicates the file to be spli

Package COM. yanek. util; import Java. io. ioexception; import Java. io. inputstreamreader; import Java. io. linenumberreader; public class tool {/*** @ Param ARGs */public static void main (string [] ARGs) {system. out. println (executecommond ("ipconfig");}/*** run the con

Package Com.gordon.utils;import Javax.servlet.http.cookie;import Javax.servlet.http.httpservletrequest;import javax.servlet.http.httpservletresponse;/** * Cookie Tool class * */public class Cookieutil {/** * Add cookie * * @param response * @param name * @param value * @param maxAge */public static void Addcookie (HttpServletResponse response, String name, Stri

=null; Bufferedoutputstream Outbuff=null; try {file sourcefile = new File (SourcePath); File TargetFile = new file (TargetPath); if (!targetfile.exists ()) {Targetfile.getparentfile (). Mkdirs (); }//Create a new file input stream and buffer it inbuff=new bufferedinputstream (new FileInputStream (sourcefile)); Create a new file output stream and buffer it outbuff=new bufferedoutputstream (new FileOutputStream (targetfile)); Buffer arra

= (endTime.getTime()- new Date().getTime()) / md;// 计算差多少天 System.out.println(endday);if (day 7 day >= 0) { if(minute>=0)System.out.println("即将开始");else {System.out.println("已结束");}} else if (day > 7) {System.out.println("预备中");} else {System.out.println("已结束");} }/*** 时间比较* * 如果第一个时间大于第二时间返回1* 等于返回0* 小于返回-1* * @param firstTime* @param secondTime* @return*/public static int compare(Date firstTime,Date secondTime){long diff =firstTime.getTime()- secondTime.getTime() ;if(diff>0){return 1;}else i

generateverify Code (int verifysize) {return Generateverifycode (verifysize, verify_codes);} /** * Generate verification code using the specified source * * @param verifysize * CAPTCHA length * @param sources * Verification code word mnemonic * @return */public static String Generateverifycode (int verifysize, string Sources) {if (sources = = NULL | | sources.length () = = 0) {sources = Verify_codes;} int codeslen = Sources.length (); Random rand = new Random (System.currenttimemillis ()); Stri

calculations are performed by calling Digest () to obtain ciphertext byte[] md = Mdinst.digest (); //Convert ciphertext to 16 binary string form int j = md.length; char str[] = new char[j * 2]; int k = 0; For (int i = 0; i //i = 0 byte byte0 = md[i]; //95 str[k++] = md5string[byte0 >>> 4 0xf]; //5 str[k++] = md5string[byte0 0xf]; //F } //Returns the encrypted string return new String (str); } catch (Exception e) { return null; } } } Tr

Java 8 enhanced tool class Arrays notes, java8arrays Make notes at willArrays tool categories are divided into two categories: Single-thread and multi-threadAll of the following statements with a subscript range are headers without tails.Single thread:1. binarySearch: The subscript of the key in the search array: binar

; } /*** meta-conversion ingredient *@paramv *@return */ Public StaticBigDecimal Dollar2penny (String v) {returnMul (V, "100"); } /*** Formatted amount * Thousands separator convenient to view amount specific size big_num_fmt = "#,###,###,###,###,###,# #0.00" * Exact two decimal places. 0.99 * 1111111.985-1,111,111.99 *@paramv *@return */ Public Staticstring FormatNumber (String v) {returnFormatNumber (V,big_num_fmt_comma); } /*** Formatted amount *@paramv *@paramconstan

Words don't say much, the code is as followsPackage Com.study;import java.lang.reflect.field;import Java.util.hashmap;import java.util.map;/** * PackageName Com.study * Description please write Description. * USER:YH * time:2016/11/29 16:57 */public class maputil{/** * JavaBean Turn Map * @param object JavaBean * @return Conversion result MAP * @throws Exception */public static map　　A tool

1. How do I get rid of marshaller formatting?： Jaxbcontext context = Jaxbcontext.newinstance (Entity. Class); Marshaller Marshaller = Context.createmarshaller (); //XML format Marshaller.setproperty (Marshaller.jaxb_formatted_output, true); //Remove the default headers that generate XML Marshaller.setproperty (Marshaller.jaxb_fragment, true); //non-escape character handling Marshaller.setproperty (Characterescapehandler. Class.ge

("Configuration file path" +filepath); Properties Properties = new properties (); try {inputstream in = new Bufferedinputstream (new FileInputStream (FilePath)); Properties.load (in); } catch (Exception e) {System.err.println ("Get resource profile [" +fullfilename+ "] Error occurred!");} return properties; /** * Gets the value of Global.properties by key name, String type * * @param key * @return Return String * * public static string Getprop (String key) {RET Urn Pps.getproperty (key); }/** *