java pocket guide

can ignore the operation of the reservations variable. Listing 4 shows an example of a complete stop producer-a thread in consumer issues:Listing 4. Stop producers--examples of threads in consumer issuespublic class Producerconsumerstop {class SampleconsumerHide and not expose a thread that can be stoppedIn order to ensure that a thread that can be stopped is not stopped by other code, we will normally stop the thread from hiding behind the threads owner, leaving the other code in the system un

; }publicvoidsetproductprice (double Productprice) {this.productprice=productprice ; }} 4. Test codepackagecom.favccxx.favsoft.main;importcom.favccxx.favsoft.pojo.hiorder;import com.favccxx.favsoft.pojo.hiproduct;importcom.thoughtworks.xstream.xstream;publicclass Mainorder{publicstaticvoidmain (String[]args) { Stringxmlbody= "5. Run the above test class to output the details of the order. You can convert an XML object to a Java object in just a few si

Java build tool-ant Application Guide (1) This article uses the latest ant 1.5.1 For example, this article introduces the installation and configuration, basic applications, and some advanced topics of this excellent build tool. The latest ant is a http://jakarta.apache.org/ant. Ant is a Java-based build tool. Theoretically, it is similar to make in C, but

Java build tool-ant Application Guide (3) Call ant in your own program Ant's task is actually a piece of functional code. A large number of built-in tasks of ant are of great significance for developing Java applications. Why cannot we use them directly? Although it is not complicated to call ant tasks in a program, we know that ant tasks are actually

{Private StaticAtomicintegerfieldupdateratomicintegerfieldupdater. Newupdater (User.class, "old"); Public Static voidMain (string[] args) {User Conan=NewUser ("Conan", 10); System.out.println (A.getandincrement (Conan)); System.out.println (A.get (Conan)); System.out.println (Conan.getold ()); } Public Static classUser {PrivateString name; Public volatile intOld ; PublicUser (String name,intOld ) { This. Name =name; This. Old =Old ; } PublicString Ge

hump-type name.4. Finally connect all the words together to get an identifier.Example:Prose Form Correct Incorrect------------------------------------------------------------------"XML HTTP Request" XMLHttpRequest XMLHttpRequest"New Customer ID" Newcustomerid Newcustomerid"Inner stopwatch" Innerstopwatch Innerstopwatch"Supports IPV6 on IOS?" Supportsipv6onios Supportsipv6onios"YouTube Importer" Youtubeimporteryoutubeimporter*Asterisking indicates yes, but not recommended.Note: in English, some

Java Gradle Getting Started Guide dependency management (add dependencies, warehouses, version conflicts)@gzdaijieThis article is the author original, reproduced please indicate the source: http://www.cnblogs.com/gzdaijie/p/5296624.htmlDirectory1. Add a Dependency package name1.1 Dependency Types1.2 Declaration dependent1.3 Adding Java Dependencies1.4 Finding a d

Search for dependent module dependencies in Mavenhttp://mvnrepository.com/artifact/org.apache.spark/spark-mllib_2.10/1.0.0 Dependencies { Compile (group: ' Org.apache.spark ', Name: ' spark-core_2.11 ', version: ' 2.3.0 ') { Exclude group: ' Javax.servlet '//, module: ' Servlet-api ' Exclude group: ' Io.netty '//, module: ' SERVL Et-api ' } //compile (group: ' Cn.com.duiba.nezha-alg ', Name: ' Alg-common ', version: ' 1.1.2-snapsho T ') //compile (group: ' Cn.com.duiba.nezha-alg ', Name: ' A

Specific domain language (domain-specific languages,dsl) has become a hot topic; Many functional languages are popular, mainly because they can be used to build DSLs. In view of this, in the final article of the Scala Guide series for Java developers, Ted Neward continues to discuss a simple calculator DSL to demonstrate the power of functional languages in building an "external" DSL, and in this process to

Scala has not only introduced functional concepts to the JVM, it has also provided us with a modern perspective on object-oriented language design. In this part of the Scala guide for Java developers, Ted Neward describes how Scala leverages features (trait) to make objects simpler and more easily built. You will learn that there are similarities and differences between features and the traditional polarity

plugin: ' Eclipse '> Gradle EclipseLs-al found out. ProjectSimilarly, discovering Gradle Java can also be performed:: Compilejava Up-to-date:p rocessresources Up-to-date: Classes Up-to-date: JavadocThe result is that the Javadoc document is compiled and generatedSummaryApply plugin: ' java ' Apply plugin: ' eclipse ' sourcecompatibility = 1.5version = ' 1.0 ' jar { manifest { attributes ' I Mplem

data type of the return value. such as: Callstaticintmethod2, call the instance method using the CALLXXXMETHOD/V/A function, XXX represents the returned data type, such as: Callintmethod3. Get the ID of an instance method, use the Getmethodid function, pass in the method name and method signature4, obtained with the ID of a static method, using the Getstaticmethodid function, passing in the method name and method signature5. Get the constructor method ID, using the "6. Get a class instance of t

information ============"); for (Constructor constru:constructor) {System.out.println (constru.tostring ()); } System.out.println ("======== gets member construction method information ends ============");}}Results:Ditto======== Get method information ============public java.lang.String com.pb.Reflect.classinfo.Person.getGender () public void Com.pb.Reflect.classinfo.Person.setGender (java.lang.String) public int com.pb.Reflect.classinfo.Person.getAge () public void Com.pb.Reflect

-name "*.txt" | Xargs grep "Main" in the/root/temp directory, in the normal file, in the file with the extension txt, find the line containing the main stringLsof-l Show All socket handlesSED file content lookup and replacementVim text editor, often familiar. Start by recording the most commonly used, for example, Flip screen: Ctrl+u (D), 2gg,3dd,3dw,yy,/Find,? find.10, learn to analyze the wrong ideasLearn to reproduce the false simulations, which can be solved by simulating the recurrence. Sim

Example: randomly generate some numbers and find out the number of digits. This kind of problem can be used in the mind of the data structure you understand, to see which is the most suitable for the structures. The above topic can build two heaps, a large root heap and a small Gan, the smaller elements placed in the large root heap, the larger elements placed in the small Gan, if the two heap is unbalanced, can be removed from one of the heap elements into another heap. The last me

Tools-maven, you can choose to use your own installed maven via maven home directory (I If you want to modify the path of the user profile and the local repository , you can override the users settings file and native repository settings . 1.6idea in configuration JDK1. in idea, open File---Project Structure, or click the shortcut icon in the top right corner of the idea.2. Enter platform Settings, SDKs, and create a new JDK that points to the JDK installation path (that is, the java_home path

are one by one corresponding. The following is a description of the corresponding relationship between Java and JNI data types in the JNI specification documentation:Basic data type:Reference type:Attention:1, JNI if written in the C + + language, all reference types derive from Jobject, using the inheritance structure attributes of C + +, using the appropriate type. As shown below:Class _jobject {}; Class _jclass:public _jobject {}; Class _jstri

Java parsing XML Guide using dom4jThe beautiful Life of the Sun Vulcan (http://blog.csdn.net/opengl_es)This article follows "Attribution-non-commercial use-consistent" authoring public agreementReprint Please keep this sentence: Sun Vulcan's Beautiful Life-this blog focuses on Agile development and mobile and IoT device research: IOS, Android, HTML5, Arduino, Pcduino , Otherwise, the article from this blo

Java:Database: Myslq,oracle,sql server,db2,sybaseOracle-related books: Oracle Learning ManualsHow data is saved: memory (the fastest non-recoverable access), hard disk/file (permanent save, not easy to share), network (shared), database (shared persistent Save access slowest Delete and change)Javase:jdkVariable data type (special data type: String custom class Array collection frame (List set Map)I/O stream (read and write Data 6 common input and output objects) network programming (Socket Progr

() { public void Run () { CalLock21 (); } }); T1.start (); T2.start (); } private void calLock12 () { Synchronized (obj1) { Sleep (); Synchronized (OBJ2) { Sleep (); } } } private void CalLock21 () { Synchronized (OBJ2) { Sleep (); Synchronized (obj1) { Sleep (); } } } private void sleep () { try { Thread.Sleep (100); } catch (Interruptedexception e) { E.printstacktrace (); } } } Reference types in JavaThe JAVA.LANG.REF package c