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(); $ } - - public voidTestsendfile ()throwsIOException { -String host = "localhost"; a intPort = 9026; +SocketAddress sad =Newinetsocketaddress (host, port); theSocketchannel sc =Socketchannel.open (); - Sc.connect (sad); $Sc.configureblocking (true); the theString fname = "src/main/java/zerocopy/test.data"; theFileChannel FC =Newfileinputstream (fname). getchannel (); the LongStart =system.nanotime (); - LongNsent

. What is the difference between writing a program in Java and running a program and running it with the C language, and the intermediate and target files that are generated?Java: compiling source files .java-> source files generate. class files, run the. class file in the JVMC: Compile source file .c->. obj file generation. exe fileWhat are the different develop

voidYangintN) { 7 if(n>0){8 //two-dimensional arrays9 int[] y=New int[n][];Ten if(n==1){ Oney[0]=New int[]{1}; A}Else if(n==2){ -y[0]=New int[]{1}; -y[

array8System.out.println ("The 2nd result in the array is:" + );9 }Ten}1 Public classHelloWorld {2 Public Static voidMain (string[] args) {3 4 //define an array to save five students ' scores5 int[] scores = {78, 93, 97, 84, 63 };6 7 //the second score in the output array8System.out.println ("The 2nd result in the array is:" + scores[

COM. demo. service. istudentmanage; public class activator implements bundleactivator {public void start (bundlecontext context) throws exception {system. out. println ("action begin... "); servicereference [] References = NULL; try {system. out. println ("service call ----------------"); // search servicestring filter = "(name = B)"; References = context. getservicereferences (istudentmanage. class. getname (), filter); // call the service if (references. length =

Java Learning (6), loop structure, and java learning loop structure 1. while Loop: Also known as "When Type Loop" While (loop condition ){ // Cyclic operation statement } Key points: ① judge first and then execute ② the number of cycles is not fixed ③ avoid endless Loops Example: enter a positive integer and output it

Chapter 6 painting with White Paper-Canvas canvas (1)Chapter 6 painting with White Paper-Canvas The previous sections detail the use of Android UI components. Through the previous chapter, developers can develop satisfactory UI effects. However, sometimes we need to implement a more beautiful UI effect. At this time, we may not be able to directly use the UI comp

/*** Java obtains 0-9,a-z,a-z range of random numbers* @param length random number* @return String*/public static String Getrandomchar (int length) {char[] chr = {' 0 ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ', ' 6 ', ' 7 ', ' 8 ', ' 9 ',' A ', ' B ', ' C ', ' d ', ' e ', ' f ', '

1. Set add replaceA. If sanitizekeys is true, the key is converted to a UTF-8-encoded string. In case of an exception, if errorhandler is not null, it is called backHandleerroronset function, return false, value is null exit.B. Find sockiopool. sockio to obtain a sockio based on key hashcode. If sockio is null and exits, callback handleerroronsetFunction, returns false. If the input expiry is null, it is set to

Java 0 Basics Run the first programAn overview of 1 JavaCode compilationCompile to run on the computer, compile is to translate the code that people can understand into the form that machine can read2 JavaThe advantagesCompile once and run everywhere. Because Java code runs in a virtual machine, the virtual machine eli

optional, the pattern is not considered, that is, it will be compiled under any film. The variable can be set with a value of us er,use R d e b u g, e ng, o p t i o n a l where eng is the default value.Include $ (build_exec UT ABLE).Build _executable represents the creation of an executable file. Executable path is"a n d r o i d source code directory "3. setting up Linux drivers using Android ADK4. Use JAVA code to directly manipulate device files to

Spring 1/2 (6), spring 1 IStuDAO. java 1 package com.lee.spring008.IOC.DI.MVC;2 3 public interface IStuDAO {4 public void saveStu();5 } IStuService. java 1 package com.lee.spri

For the 0 basic friends, can quickly learn Java, it will be a special sense of accomplishment, but also particularly pleasurable things, but 0 Foundation how to learn Java quickly? This is the 0 basic friend Special distress problem, you are learning

jfinal is based on Java the speed of language WEB + ORM Development Framework whose core design objective is to developFast, less code, learning simple, powerful, lightweight, easy to expand, Restful . In the owning Javawith all the advantages of the language. Ruby , python , PHP the development efficiency of such dynamic language ! jfinal has the following main features:L MVC Architecture, compact design, easy to useL Follow COC principle,

On the Internet to see the blog when inadvertently found that there is a Java concurrent tutorial is also good, there are more than 20 speak concurrent, a day translation 1 does not seem too difficult. Let ' s go!Original address: http://tutorials.jenkov.com/java-concurrency/index.htmlHere is the table of contents: Java