java utility class

See this topic is not most people are dismissive, indeed almost every Java program ape has written the JSON tool class, and many people have used json-lib.jar encapsulation of similar functions, but I use the regular to support the XML and JSON, reduce the introduction of the jar package. Basically meet the needs. Of course, if you need more powerful features, it's best to use json-lib to achieve it. Take a

Java Utility ClassThe 1.File class provides methods for managing files and directories whose objects represent a file or directory. It provides several ways to manipulate a file or folder. The list () method and the Listfiles () method can play a role in locating a specific file.The 2.Object class, which is the ancesto

(Reproduced: http://www.hollischuang.com/archives/1606)GitHub Address: Https://github.com/liufeiSAP/javaStudy.gitIn Java, there are a number of more useful class libraries, and they usually define a series of methods with common functionality. This article summarizes the most common Java utility classes and their most

Package Com.eabax.plugin.yundada.utils;import Java.text.parseexception;import Java.text.simpledateformat;import Java.util.arraylist;import Java.util.calendar;import Java.util.date;import Java.util.gregoriancalendar;import Java.util.linkedhashmap;public class Timeutil {/** * resolves all months between a date * * @param begindatestr * @param enddatestr * @return */public static arraylist　　Java Time Tool

= =).toLowerCase (): Converts a string to lowercase characters.toUpperCase (): Converts a string to uppercase characters.Equalsignorecase (): Compares whether two strings are the same (case insensitive).4) StringBuilder and StringBuffer classYou need to use StringBuilder or stringbuffer when you need to do frequent concatenation of strings.5) Date class and SimpleDateFormat classThe date class is used to m

Org.apache.commons.lang.StringUtilsAs a supplement to the Lang package in the JDKCheck if charsequence is empty, null, or blank spaceCharsequence (Charbuffer, Segment, String, StringBuffer, StringBuilder) IsBlank (charsequence) can check for null, NULL, and space IsEmpty (charsequence) can only check for null and NULL There are also Isnotblank (CS) and Isnotempt (CS) String interceptionSubstring/left/right/mid-null-safe Substring ExtractionsString completionLeftpad/rightpad/center/

;" +integer.tooctalstring (10));SYSTEM.OUT.PRINTLN ("16 binary 10 corresponding data----->" +integer.tohexstring (10));}/*** 5.valueOf* Convert basic data types to corresponding packaging----> boxing* Xxxvalue 8 package types are available.* Convert XXX type to corresponding basic data type---> Unboxing */@Testpublic void Test05 () {int num=3;Integer i=integer.valueof (num);Num=i.intvalue ();}/*** 6. Classic Face Test* because integer.valueof (num) caches data between -128~127* If our data is in

JAVA utility -- javamail and utility -- javamail Before implementing javamail, you must first set up an email server.James needs to use the Tomcat server when developing WEB programs, but the Tomcat server does not support Mail processing. Therefore, to send emails, you need to configure a separate Java Mail server, ja

C # log class, utility. NET Log Action class System logs are frequently used by both Web applications and Windows Forms applications. Log can help us to track the operation of the monitoring system, timely detection of errors, output mode information. There are many ways to log logs, such as using text files, XML files, databases, and so on. Logging with a text

Nestedgridview Nested GridView Used Nestedlistview Nested use of ListView Osutils Android System Toolbox Otherutils The main is to add HTML to the string Reflectutils Reflection Tool class that provides some basic Java reflection functionality Regexutils Regular Expression tool

to the frequency of word occurrence descending sort!2, in descending order by the frequency of letters!The Squid project provides a number of resources toassist users design,implement and support squid installations. Browsethe documentation and support sections for more infomation#!/bin/shword= "thesquidprojectprovidesanumberofresources Toassistusersdesign,implementandsupportsquidinstallations.please browsethedocumentationandsupportsectionsformoreinfomation "#A = ' echo $word |egrep-o ' [a-za-z

When using. Net to develop certain arcgisengine interfaces for parameter passing, some interfaces defined earlier in MS [ifontdisp, ipicturedisp] are sometimes used.These interfaces have been replaced by new types in. net. How can we perform type conversion? A static object is provided in the engine. Net API to facilitate this common type conversion?Process descriptionA static OLE object is provided in the ESRI. ArcGIS. Utility. comsupport package of

JSON utility class for converting objects and JSON strings to each otherImport Java.beans.introspectionexception;import Java.beans.introspector;import java.beans.PropertyDescriptor; Import Java.lang.reflect.field;import java.math.bigdecimal;import java.math.biginteger;import java.util.ArrayList; Import Java.util.list;import java.util.map;import java.util.set;/** * JSON