java ee 7 certification

. E: Case Demo An anonymous inner class as required 14. Object-Oriented (anonymous inner class overrides multiple method calls) A: Case Demo Method invocation for Anonymous inner class 15, Object-oriented (anonymous internal class in the development of the application) A: The code is as follows //这里写抽象类，接口都行abstract class Person { public abstract void show();}class PersonDemo { public void method(Person p) {

JDK5 Unable to wake a specified thread before If the communication between multiple threads, you need to use Notifyall () to notify all threads, use while to repeatedly judge the condition 6, Multi-threaded (JDK1.5 new feature mutex) 1. Synchronization Synchronizing using the Lock () and Unlock () Methods of the Reentrantlock class 2. Communication Use the Newcondition () method of the Reentrantlock class to get the condition objec

, nosuchmethodexception {person p=new person ("Xiao Qiang",new Date ()); " Name ")); " Age ")); Date ")); 　　　　(5) Use Beanutils to encapsulate the acquired value into the JavaBean at once.//method of filling all values once with Benutils@Test Public voidSetvalueall ()throwsException, invocationtargetexception {person P=NewPerson (); MapNewHashmap(); Map.put ("Name", "Xiao Qiang"); Map.put ("Age", "24"); Map.put ("Date",NewDate ()); Beanutils.populat

need to create an intermediate table that stores the primary key ID of two tables respectively)Key indicates the corresponding column,The Userdetails attribute is in the role class(4) Also many to many, with the same(5) The Department is self-related, the superior department is many to one, the subordinate department is a pair of many(6) Permissions are self-correlating, same as aboveThree: test, create a table when creating a sessionfactory, write a junit test execution(1) The Discovery table

1, the installation of RZ, sz commandYum Install Lrzsz2. Configure Environment variablesVI. bash_profileDefault path:path= $PATH: $HOME/.local/bin: $HOME/binRevision changed toExport JAVA_HOME=/HOME/P2P/JDK1. 7. 0_79/jreexport CLASSPATH= $JAVA _home/lib/rt.jarpath= $PATH: $JAVA _home/Binexport PATHAnd refresh the configuration through source. Bash_profile3. Open

Why are some java EE/J2EE projects inefficient or at least inefficient) English original post address: http://www.adam-bien.com/roller/abien/entry/why_some_of_the_java 1. Architects are far more proficient in PowerPoint than the popular Java IDE.2. Simply deploy the basic environment (such as applications)ProgramServers and databases). Several DVDs and severa

because it wants to download some files from the Web. So where does it download from? It is downloaded from the MAVEN default remote library (HTTP://REPO1.MAVEN.ORG/MAVEN2). This remote repository has MAVEN's core plug-in and the jar files available for download.But not all jar files can be downloaded from the default remote library, such as the one we developed ourselves. At this point, there are two options: either set up a custom library within the company or manually download and install th

Java EE Learning routeFirst, the Java Foundation1. Initial knowledge of JavaMemoryDatavariables2. Structure Statements1) ConditionsifSwitch2) Cycle for while3) Statement BreakContinue3. Arrays4. Nesting loops5. Final MissionPerpetual calendar2048 Small Games Second, object-oriented 1. Classes and Objects2. Methods3.String ()DateCaldenarMath4. Object-oriented fea

j2ee| Process 1. First to http://java.sun.com/j2ee/1.4/download.html download Java EE SDK 1.4 installation files 2. Then to http://www.caucho.com/download/index.xtp download Resin 2.1.16 3. Install the JDK to the computer! Follow the prompts to the next step can be successfully installed. 4. Extract Resin compression package to just install the Java

. Otherwise, there may be some inexplicable problems.(3) MySQL driver jar package also does not need to be added, because the jar package is also already available in the JBPM project. It is recommended to use the MySQL driver jar package provided in the JBPM project. Native is more reliable, but pro-test using the MySQL official website provided by the drive Jar package is also no problem.(4) Add spring related jar package.　　　　　　(6) Add the relevant jar package for STRUTS2.　　　　　　(

Jeesz is a distributed framework that provides modular, service-based, hot-swappable ideas for project-based Java EE Rapid development platforms with high package security.Jeesz itself integrates Dubbo service control, zookeeper Registration Center, Redis distributed cache technology, FASTDFS Distributed File system, ACTIVEMQ asynchronous message middleware, Nginx load balancing and other distributed techno

+ */ surveytoken.unbind (); the return(surveyid%2) ==0? " Even ":" Odd ";//Returns the even string if it is an even number, or odd string if it is an odd number * } $SYSTEM.OUT.PRINTLN ("Survey object is empty");Panax Notoginseng return NULL; - } the +}The policy of the routed data source is determined in the overridden method: If the survey ID is even, it is saved to the answer table in the main library Lsn_surveypark, and if it is odd, it is

username) { the This. Username =username; * } $ Panax Notoginseng Public voidSetPassword (String password) { - This. Password =password; the } +}12 3DOCTYPE Struts public4"-//apache software foundation//dtd Struts Configuration 2.3//en"5"Http://struts.apache.org/dtds/struts-2.3.dtd" >6 789Ten One A - PackageName= "SANGLP"extends= "Struts-default" > -class= "SANGLP." Loginaction "> the - - - + - Package> + 1 4 5 6 Lt;/head> 8 10 11 Lt;/body>12 1

frame: jQuery1.9.CSS Framework: Bootstrap 4 MetronicClient authentication: Jqueryvalidation Plugin.Rich Text: CkecitorFile Management: CkfinderDynamic tab: JerichotabData table: Jqgriddialog box: JQuery jboxTree structure controls: JQuery ZtreeOther components: Bootstrap 4 metronic3. SupportServer middleware: Tomcat 6, 7, Jboss 7, WebLogic 10, WebSphere 8Database support: Currently only support MySQL datab

Xml:Is the most basic configuration file of the Java EE Project, the portal of the server loading project,Of course, 3.0. You can also configure a series of parameters that your project requires in your code.Web. XML exists in Tomcat conf, and the configuration in the project inherits and overrides the file's configuration. Basic configuration:1. Welcome File Settings: This is the default configuration of

Language="Java"pageencoding="Utf-8"%>2 DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd ">3 HTML>4 Head>5 Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8">6 title>Insert Title heretitle>7 Head>8 Body>9 Hello, this is the first SPRINGMVC program! Ten Body> One HTML>5. Enter http://localhost:8080/springmvc/home.action on the browser to test　　

) , Labels Bean can include properties such as the following:watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvdtaxmduxntc2mq==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/center "width=" 550 "height=" 480 ">2. Context namespace1), Context tags:watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvdtaxmduxntc2mq==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/center "width=" 531 "height=" >. Suppose you don't want to configure the bean in an XML file. The ability to a

. 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152 public class Person {private String name;private int age;private boolean gender;public Person() {super();}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public boolean isGender() {return gender;}public void setGender(boolean gender) {this.gender = gender;}@Overrid

field is null, then the hashcode value is 0.(7) In the case of arrays, each element needs to be treated as a separate domain. The Java.util.Arrays.hashCode method contains 8 basic types of arrays and hashcode computations of reference arrays, as in the previous algorithm.C, finally, the hash code of each domain is merged into the object's hashing code.This is illustrated by an example below. In this example, the person class overrides the Equals () m

;AJAXnbsp;nbsp;nbsp; interactionnbsp;nbsp;nbsp;thatnbsp;nbsp;nbsp;willnbsp;nbsp;nbsp;providenbsp;nbsp;nbsp;thenbsp; nbsp;nbsp;validationnbsp;nbsp;nbsp;logicnbsp;nbsp;nbsp; --ajax Interactive profiling: Look at an AJAX enabled Java EE application: A servlet named Validateservlet validates the form data, but requires that it not refresh the entire page. The steps are as follows: 1, A client event occurs. --T