Java

MySQL:"com.mysql.jdbc.Driver" jdbc:mysql://localhost:3306/dbname?useunicode=true& CHARACTERENCODING=GBK; (Abbreviated: Jdbc:mysql:///dbname ... Oracle:"Oracle.jdbc.driver.OracleDriver" "jdbc:oracle:thin:@ host Name: Port number: Database

1. Download the Org.apache.commons.httpclient.jar file.2. Use HttpClient to access the Web site (URL).3. Use multithreading to test the number of concurrency. The Java.util.concurrent package implements concurrency.The code is as follows:1

Today turned to see Sytem.class source code, found Getenv () method, immediately before the light, so check the information to understand the following:Method definition: Public Static string getenv (string name) { = getSecurityManager ();

Java Core Volumes1. Simplicity2. Object-oriented: focus on chairs rather than tools3. Network skills: HTTP/FTP, remote Method invocation (distributed)4. Robust: Java pointer model (without corrupting data structures and rewriting memory)5. Security:

/** * * function Description * Full half-width of strings * * @author Hailan */public class Sbcchange {//public static void main (string[] args) {////string qjstr = "full-width turning half-angle DAO Zhe 4 ";//system.out.println (Qjstr.length ()

Optimization is an endless work, on the path of AOP, we go very far, but there are a lot of work, we did not do, for example, the business of the AOP package into a container, the service part of the AOP transformation into an interface-oriented, so

"Is it hard to learn Java?" "Is programming studious?" "People often talk about these problems, and it's easy and difficult to program them." The key is how you learn, learning programming, the key is to have perseverance to persist in the mentality,

To sort a single field or multiple fields in JavaImport Java.util.arraylist;import java.util.collections;import java.util.comparator;import java.util.List;/** * @ date:2015 June 19 Morning 10:11:44 */public class Collectiontest {/** * Main

Java programming language Set collection method demoImport Java.util.collection;import java.util.comparator;import Java.util.hashset;import Java.util.Iterator;import Java.util.set;public class Hashsetdemos {public static void main (string[] args) {//

In my previous blog > I showed you how to do an Excel import that reduces IO read and write, and here I share specific code implementations:I'll share it in the order of this picture.Check that the Excel data is duplicated code://2. Look for

/*explanation URLhttp://wenku.baidu.com/link?url=1xofQsF1043cyk06D7L_OWOJUna67Lx3GNK9Qg6HbADlRH_ Tmnlx-3evvlrtvuvqa9c442x576vsalq8ytp8v7o9p7c_vtibm7gd_08wye3*/ PackageQuickSort;/*** Quick Sort *@authorAdministrator **/ Public classQuickSort

simulates the Trim method in a string to remove spaces at both ends of a stringpublic class Stingtrimdemo {//simulates a trim method, removing a space on either side of a string ", public static void main (string[] args) {//TODO auto-generated met

thread Pool2.1 Thread pool related class structureExecutorExecutorserviceAbstractexecutorserviceThreadpoolexecutor2.2 Introduction to various classes2.2.1 Interface ExecutorInterface Executor is a simple standardized interface for defining custom

Working on the tag support for this blog, I ' ve cut a little sample code out of a Java servlet, and I ' m showing it below. I was looking at the HttpServletRequest, and is curious about the difference between request.getPathInfo() ,

2. Student.java ImportJava.util.Date;PublicClassStudent{PrivateIntIdPrivateString name;PrivateIntAgePrivateDate birth;PublicStudent (){}Public Student (int ID, String name,IntAge, Date birth){This.id =IdTHIS.name =NameThis.age =AgeThis.birth

Public platform application development: methods, techniques and cases-Liu Feng, Java language version, and Liu Feng language version His own blog: http://blog.csdn.net/lyq8479 Author profile: Liu yunqiang, the network name "Liu Feng", senior public

Grouping recursion: calculates the maximum, minimum, and recursive arrays of array elements. // Divide and conquer recursion, calculate the maximum value of the array element, the minimum value/*** Save the generated maximum value, and the minimum

Suffix expression construction for text expression Calculation import java.util.ArrayList;import java.util.List;import com.potato.calculate.utils.SimpleUtils;public class BBB {public static void main(String[] args) {List list_a = new ArrayList

Java Design Pattern -- Chain of Responsibility (responsible Chain) PatternIf several objects are organized in a certain hierarchy, for example, as a class responsibility chain, the client code may not have to know which class it will use in advance.

Java object-oriented basic String class Two instantiation methods of the String class A. Direct assignment   Public class Stringlei {public static void main (String args []) {String name = "zhangsan"; System. out. println ("name:" + name );}} B. Use