Java

1 Importjava.sql.Connection;2 ImportJava.sql.DriverManager;3 ImportJava.sql.ResultSet;4 Importjava.sql.SQLException;5 Importjava.sql.Statement;6 ImportJava.util.ResourceBundle;7 8 Public classConnnectionutils {9 Ten Private StaticString

There are three types of Java collections: List,set,map. List and set inherit the collection interface. Difference (list can add duplicate objects and sort by index position; Set does not have these two characteristics ).Map is the value inside the

/** * @author Stone * */public class Letter {private string name;public letters (String name) {this.name = name;} Public String GetName () {return name;}}/** * A plant that produces a letter object (Singleton factory) * @author Stone * */public

From the beginning of the holiday, we began to learn about the Java language continuously. First of all, from the language editing environment and previously learned C language will be a little different, the Java language learning has a lot of new

/** * 缓存池 * @author xiaoquan * @create 2015年3月13日 上午10:32:13 * @see */publicclassCachePool {    private staticCachePool instance;//缓存池唯一实例    privatestaticMap cacheItems;//缓存Map        privateCachePool(){        cacheItems = newHashMap();    }    /**

Package com.util; Import Java.io.File; /** * Delete Folder * @createTime DSC 20, 2010 15:38 * @version 2.0 */ Public class DeleteFolder { //Delete folder //param FolderPath folder complete absolute path public static void

1 Public classStack {2 Private intmaxsize=2;//stack capacity, initially 2, (for expression evaluation, operand stack)3 Private intTop=-1;//stack Top pointer4 Private int[] Data=New int[MaxSize];//Data5 //empty sentence6 Public

Through a period of project practice, I found that the enumeration in Java is very different from the enumeration in. NET, which initially caused me to enumerate some errors in Java and partially flawed applications, in fact, or because I would

Now in the Java API design, advocating interface-oriented programming, that is, in the design of the API, parameter transfer and return is recommended to use interfaces, rather than specific implementation classes, such as the input parameter type

Transferred from: http://www.cnblogs.com/zhxhdean/archive/2011/03/25/1995431.htmlThe data types in Java can be divided into two categories:1. The basic data type, also known as the original data type. Byte,short,char,int,long,float,double,booleanThe

Write a small thing, to repeat the number, use a bit array, although Java has provided a bitset, but preface, and wrote a simpleThe principle is not written, a lot of online1 ImportJava.util.Iterator;2 ImportJava.util.function.BiConsumer;3 4 Public

Development OpenAM Java Client after the Agent installation is complete, you can log in with your own Agentsample app. The main point here is how to get ssotoken after SSO, as well as the relevant Session information. Complete code on Github.The

Sometimes you need to sort the list by using the sort () method of the collections, instead of sorting it yourself. PackagemyTest;Importjava.util.ArrayList;Importjava.util.Collections;ImportJava.util.Comparator;Importjava.util.List; Public

Character Directly from the video inside, did not understand the relationship between these character sets, and did not go to check, this time just in the video. Integer types and binary conversions Learn several types of integral

Java NIO basics and javanio Basics Java introduced the java. nio class library in JDK1.4, opening the door for Java to enter the backend Server and middleware development. In general, nio represents New I/O, but in essence, we can understand it as

Object-Oriented Programming (2) -- objects and classes, object-oriented programming objectsConcepts of objects and Classes Object: a specific thing; Class: abstract) First, there are specific objects, then abstract the image parts of each object,

Webwork learning path (6) Action call, webworkaction Along the way, we finally need to begin a summary of core webwork business classes. webwork re-wraps the web parameters passed by the client to execute the Business Action class and feedback the

Solve IntelliJ garbled problem, intellij garbled Chinese characters are garbled in the IntelliJ console. During compilation, the compiler compiles Chinese characters into non-UTF-8 and causes garbled characters. I encountered an error when parsing

Simple and interesting java questions 1. Question: How many three numbers can be composed of 1, 2, 3, and 4 distinct numbers without repeated numbers? What is it? public class TestTN {            public  static  void  main(String[] args)

Introduction to distributed cache memcached, win7 environment installation, Common commands set, get, delete, stats, memcachedwin7Introduction to distributed cache memcached, win7 environment installation, Common commands set, get, delete, stats 1.