word questions and answers

TreeMap. If we don't want to repeat, we should use set.(2) Some collection classes allow you to specify the initial capacity, so if we can estimate the number of stored elements, we could use it to avoid re-hashing or resizing.(3) programming based on interfaces, rather than implementation-based programming, allows us to easily change the implementation later.(4) Always use type-safe generics to avoid classcastexception at run time.(5) Using the immutable classes provided by the JDK as key to t

'TOUCH-MT 201109151327/tmp/$baseNameDoneThird question: Write a script that shows the user names and ID numbers for the 3, 7, and 11 users in/etc/passwd.#!/bin/bashFor Lineno in 3 7 11;douserinfo= ' Head-n $lineNo/etc/passwd | Tail-1 | cut-d:-f1,3 'Echo-e "User: ' Echo $userInfo | cut-d:-f1 ' \nuid: ' echo $userInfo | cut-d:-f2 ' "DoneI wrote the following, made a little change, I feel fit my style, but the main frame unchanged.#!/bin/bashway=/etc/passwdFor Lineno in 3 7 11;doecho "User name: '

). In the process of populating the handler, depending on your configuration, Spring will do some extra work for you: Httpmessageconveter: Converts the request message (such as Json, XML, and so on) to an object, converting the object to the specified response information. Data Transformation: Data conversion for a request message. such as string conversion to Integer, double, and so on. Data is initialized: Data is formatted for the request message. such as converting a string into a formatt

Here are 5 interview questions to continue the previous questions and answers about Linux interviews. If you are a tecmint reader, I am very grateful for your support. 1. Write a shell script to get the current date, time, username and current working directory. Answer: The output username, current date and time, and the current working directory command are lo

= "Aaaabbbccccddfgh"; var obj = {};for (var i=0;i10, write a function, clear the string before and after the space. (compatible with all browsers)function Trim (str) {if (str typeof str = = = = = = "string") {return str.replace (/(^\s*) | ( \s*) $/g, ""); Remove front and back blank characters}}other1. What is the process of a complete HTTP transaction? Basic Flow:A. Domain Name resolutionB. 3-time handshake to initiate TCPC. Initiating an HTTP request after establishing a TCP connectionD. ser

: localstorage for persistent local storage, data never expires, and browser shutdown is not lost. Sessionstorage pages in the same session can be accessed and the data is destroyed when the session ends. So sessionstorage is not a persistent local store, it's just session-level storage7. What are the new form elements in HTML5?HTML5 has added a number of form elements that allow developers to build better Web applications. DataList datetime output keygen date month Week time color number range

the subject and finds the associated servlet.67. What is the controller of the Spring MVC framework? The controller provides an access to the application's behavior, which is typically implemented through the service interface. The controller parses the user input and translates it into a model that is presented to the user by the view. Spring implements a control layer in a very abstract way, allowing the user to create multiple-purpose controllers.@Controller AnnotationsThis note indicates th

business objects and control logic with control inversion. It also allows binding of request parameters and business objects in a declarative manner.Dispatcherservlet.The Spring MVC Framework is designed around Dispatcherservlet to handle all HTTP requests and responses.Webapplicationcontext.Webapplicationcontext inherits ApplicationContext and adds some unique features to the Web application that are different from the general ApplicationContext because it handles the subject and finds the ass

Answers are provided to the written examination questions of a large network company. 1. there is a forum where the post data is huge. please briefly describe how to improve the efficiency of searching for posts. In terms of programs, the page cache technology can be used. There is a forum on the front-end interface. there is a huge amount of post data. please briefly describe how to improve the efficiency

, followed by a bubbling event.two · Routed Events (routed event) and Commands (command)The Event and Command are the foundation of the program's internal communication, and Routed Events can initiate multiple controls and communicate with the user in an orderly manner.Commands is the core architecture provided by the. NET Framework to activate and remove high-level tasks.The animation derived from this is the further events. Allows you to use the event schema in a friendly and interactive way,

("title: {0}", Titile);Console.WriteLine ("Author: {0}", author);Console.WriteLine ("Publishing house: {0}", press);Console.WriteLine ("Prices: {0}", price);}}constructor functionClass callbook{static void Main (){Book Book1 = new book ("123456789");//ObjectBook1. Show ();//functionConsole.WriteLine ();Book1. TITLE = "min";Book1. AUTHOR = "Yes";Book1. Press = "Ah";Book1. Price = 12;Book1. Show ();Book1 = new book ("1236547", "Good", "Mountain", "up", 14);//Question 2?????????? No book here.Can

This article summarizes some of the frequently encountered questions about wireless technology and provides detailed answers. I hope this article will help you in your future work. FAQs about wireless technology WLAN = GPRS? Many friends once asked if the laptop equipped with a wireless network card can connect to the AP to access the Internet anytime, anywhere? In view of this incomplete understanding, it

1. Please write out the PHP5 permission control modifier.Answer: Private protected public.2. What are the methods you use to solve traffic problems for large-volume websites?Answer: First, verify that the server hardware is sufficient to support the current traffic.Second, optimize database access.Third, prohibit the external hotlinking.Four, control the download of large files.Five, using different host to divert the main flow of the six, the use of traffic analysis statistics software.3. In HT

[Original] answers to frequently asked questions about the lightweight mobile instant messaging technology MobileIMSDK, mobileimsdk Statement:Currently, the MobileIMSDK is a self-developed open-source project and has been released. I have summarized some common problems related to the MobileIMSDK. I hope it will be useful to those who need it. Thank you. To communicate with the author, see the personal si

Interview Questions and answers for 40 Java sets and 40 Java Sets Provided by Beijing shangxuetang 1. JavaWhat is a collection framework? What are the advantages of a collection framework? Each programming language has a set. The original Java version contains several collection classes: Vector, Stack, HashTable, and Array. With the widespread use of collections, Java1.2 proposes a set framework that includ

Typical questions and answers from Oracle 1. Explanations of differences between cold backup and hot backup and their respective advantages answer: Hot Backup is applicable to databases in archive mode when the database is still working. Cold backup refers to the backup after the database is closed, applicable to all databases. The advantage of hot backup is that the database can still be used during Backup

For questions and answers about linux testing, be professional. -- Linux general technology-Linux technology and application information. For details, refer to the following section. 1. What is linux? 2. linux development history and common versions? 3. What are the advantages and disadvantages of linux? 4. What is the current linux application? 5. How to learn about linux? 6. How to partition and inst

function, and CURL can all achieve this. If PHP and Java are integrated, PHP has built-in this mechanism (If PHP and. NET integration. For example, $ foo = new Java ('java. lang. system ');5. CVS and SVN. SVN is known as the next generation of CVS and has powerful functions. However, CVS is a veteran with a high market share. I have been using SVN for a long time. The question is what tools are used. Well, this may require the following answers: CVS

developers to build better Web applications. DataList Datetime Output Keygen Date Month Week Time Color Number Range Email Url 8. What HTML4 tags are HTML5 discarded?HTML5 discarded some outdated, unreasonable HTML Tags: Frame Frameset Noframe Applet Big Center Basefront 9. What new APIs does the HTML5 standard provide?The application APIs provided by HTML5 are mainly: Media API Text

This article is about the most complete and detailed PHP surface questions (with answers), with a certain reference value, now share to everyone, the need for friends can refer to 1. What does __file__ mean? (5 points)The full path and file name of the file. If used in the include file, the include filename is returned. Since PHP 4.0.2, __file__ always contains an absolute path, and the previous version so