(Str.matches ("\\s"));} }View Code
\s: Represents a space that is not arbitrary;
\w: denotes any digit in the alphanumeric underline of letters (including uppercase or lowercase);
4. Boundary Matching:
^: written before the regular, indicating the beginning of the regular;
$: Written at the end of the regular, indicating a regular end;
5. Digital Specifications:
?: Indicates that the regular specification can only occur 0 or 1 times;
public class Dem
?[ 13578]|1[02])-(0?[ 1-9]| [12]\d|3[01]) | (((1[6-9]| [2-9]\d) \d{2})-(0?[ 13456789]|1[012])-(0?[ 1-9]| [12]\d|30)] | (((1[6-9]| [2-9]\d] \d{2}) -0?2-(0?[ 1-9]|1\D|2[0-8]) | (((1[6-9]| [2-9]\d] (0[48]|[ 2468][048]| [13579] [26]) | ((16| [2468] [048]| [3579] [26]) (xx)) -0?2-29- )) $"); return(Bvalid Date.compareto ("1753-01-01") >=0); //merging the date validation expressions for common year and leap years, we get the final validation date format as YYYY-MM-DD for the regular expression://([0-
comes with the parsing XML, using fewer parsers.Sax is similar to pull, which works with large documents and requires only parts of the document, while the DOM is for small documents, random access, and changes to the document.Let's see how it's used in the code.Program directory StructureXML file that needs parsing file.xmlParsing objectsPackage Com.dzt.xml_parser.domain;public class Person {private int id;private String name;private short Age;private Stri
Syntax
android:name="string" />
Contained in:
Description
Adds an action to an intent filter. An
element must contain one or more
elements. If it doesn ' t contain any, nointent objects'll get through the filter. See Intents and Intent Filters for details on Intent Filters and the role of actionspecifications within a filter.
Attributes
andro
Effect:Want to see an example of, interested in can read a previous articleAndroid Viewpager Fragment Implementation tabSome key codes:public class Serializeactivity extends Activity implements Serializable {Button btnlist, btnparcelable, Btnserialze; Private final String TAG = "Serializeactivity";p ublic final static string list_key = "ArrayList";p ublic final static Strin G Par_key = "parcelable";p ublic final static String Ser_key = "serializable";
follows:
After the modification, the execution results are the same. It only applies the javascript Object form. Now that it is in the ASP. net mvc environment, we should think of a Model. We can write the passed parameters as a Model.
This mainly solves the problem of the Controller's Action parameters. If there are many parameters, the more parameters the Action carries. In case of method overloading, You have to match multiple actions. If you use the Model, you do not need to care about the
. ").Css (" color "," red "); return false ;}} background code: using System; using System. collections. generic; using System. linq; using System. web; using System. web. UI; using System. web. UI. webControls; using SS. upload; using WFC. fenxiao; namespace wanfangcheng {public partial class Upload: BasePage {// file size: 1024 kb private long size = 1024; // file type private string type = ". jpg |. jpeg |. png |. gif |. bmp "; // Save the name strin
(); Convert a JSON object to a JSON characterOrvar last=json.stringify (obj); Convert a JSON object to a JSON characteralert (last);In the above several methods, in addition to the Eval_r () function is JS self-contained, several other methods are from the Json.js package. The new version of JSON modifies the API to inject json.stringify () and Json.parse () two methods into the Javascript built-in object, which becomes the object.tojsonstring (), and the latter becomes the
(); If you are reading the river label start, instantiate the river if (tagname.equals) {isriver=true; River=new River (); /** navigates to the river Start node **/river.setname (Attributes.getvalue (NAME)); River.setlength (Integer.parseint (Attributes.getvalue (LENGTH))); }//Then read other node if (isriver) {if (Tagname.equals (INTRODUCTION)) {xintroduction=t Rue }else if (tagname.equals (IMAGEURL)) {ximageurl=true; }}
null);/*============= ========== inserting test data =======================*/insert into user (Userid,name,password) VALUES (' admin ', ' Administrator ', ' Admin ');5.2 Database connectionspublic class DatabaseConnection {private static final String Dbdriver = "Com.mysql.jdbc.Driver";p rivate static final Strin G Dburl = "Jdbc:mysql://localhost/struts?useunicode=truecharacterencoding=utf-8";p rivate static final String DBUSER = "root";p rivate stat
myclosure = {println ' Hello world! '} Execute our closuremyclosure () #output: Hello world!The following is a closure for receiving parameters:def myclosure = {String str--println str}//execute our closuremyclosure (' Hello world! ') #output: Hello world!If closure only receives one parameter, it can be used to refer to this parameter:def myclosure = {println It}//execute our closuremyclosure (' Hello world! ') #output: Hello world!Closure to receive multiple parameters:def myclosure = {String
(URL) method is the most efficient!! aspx or non-ASPX (HTML) resources that can be redirected to the same or not the same server Server.Transfer methods and Server.Execute methods are the most flexible!! However, you can only go to the same application directory, and it may cause undesirable results to occur Server.Execute method consumes the most resources.TEXT.ASHX Code: void ProcessRequest (HttpContext context) { context. Server.Transfer ("/default.aspx");} Defaul
1. new project, go to the official website to download the zip package, unzip, open the releases file, put the latest jar package, test into the Project Libs directory, the introduction of the package. 2. Through 1, it can be used , very simple , the following is a demo of their own, using it to provide a variety of different methods to complete from the server to obtain a JSON data:Package Com.http;import Com.loopj.android.http.asynchttpclient;import Com.loopj.android.http.asynchttpresponsehand
Package tread;/*** producer consumer mode: Traffic Signal Method * Wait (): Wait, release lock; * notify (); * Wait and consumer y must be used together with sychronized; * Sleep (): Sleep With lock: **/public class movie {private string PIC; private Boolean flag = true; // signal lamp // flag = T: production, consumer waiting, notification consumption after production is complete: // flag = F: consumer consumption, producer waiting, notification production after consumption is complete; Public
other places to SQL * Plus. For example, the following script:Select deptno, empno, enameFrom EMPWhere empno = '000000 ';If it is copied to SQL * Plus for execution, an error occurs. This command can solve this problem15). Set the output of dbms_outputSet serveroutput on buffer 20000Use dbms_output.put_line ('strin _ content'); you can output information in the stored procedure and debug the stored procedure.If you want to display the output of dbms_
. What is generally final type MSG. What = 2; handler. sendmessage (MSG );}}}
The layout file is not pasted, mainly a button and a button. Paste the Download text class
Package COM. example. demodownload; import Java. io. bufferedreader; import Java. io. ioexception; import Java. io. inputstreamreader; import java.net. httpurlconnection; import java.net. URL; public class httpdownloader {// download the file based on the URL, provided that the content in the file is text, and the return value o
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