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(); T3.sayhi ();Obj3 inherits Obj2,obj2 inheritance Obj1. When our Obj3 instance object accesses Sayhi, we go to Obj3 's instance object and look for the Sayhi method (not found), then go to the OBJ3 prototype (not found), then go to the parent OBJ2 prototype (not found), and then go to the OBJ1 prototype (found). The path to finding is the prototype chain. This is a learning record, not a tutorial. You can point out mistakes, but don't be mean. Original link: http://haojima.net/zh

, we put a test.properties file into our class directory, we use the ClassLoader to read the contents of it.The content of our configuration file is simple:User=rootpassword=123456The code is as follows:The operating result is:User:rootpassword:123456PostscriptThis article introduces the basics of reflection and the source of reflection . Class class, and tells about getting Class class object in four ways, but also introduced the class loader some knowledge, about reflection this article first

make sure you can use MongoDB, the window does not turn off. If you want to connect MongoDB , then open a new window. MongoDB defaults to the installation method and does not add this service to Windows services. We open the service every time by using the mongod command. This service can be found through Task Manager If we need to use this command to open the service every time, it will be very troublesome. We can add this mongd service to the list of services in Windows by command. us

Swift In OC, we need to use self for the code block, we can pay the self to other variables directly, and then make the empty after use in the block, or like the following weak reference self to avoid circular references:__weak typeof(self) weakSelf = self; So what do we do to this in swift? Very simple, look at the following code//这里用gcd举例不好，毕竟系统的块不会造成循环引用，这里就勉强的学一下怎么改吧dispatch_async(dispatch_get_global_queue(0, 0)) {[unowned self] () -> Void in self.view //添加自己的代码 } You j

00, on the back of the pack on the way programmers learn01, Back Pack 2--why to learn GTK02, the back of the luggage 3-- GUI Overview03, the back of the luggage 4-- About GTK04, the back of the luggage 5-- GTK Environment Setup (Linux)05, the back of the luggage 6-- GTK environment Setup (Windows)06, Embark on the journey a simple blank window07. embark on a journey 2-- The addition of the control08. embark on a journey 3-- Horizontal layout of layout

Android multimedia-learn to use the system camera in step 5 To take a photo with a system camera and return the photo, follow these steps:[1] Permission [2] Start the camera with intent Intent intent = new Intent (); intent. setAction (MediaStore. ACTION_IMAGE_CAPTURE); // implicitly start the System camera [3] set the image storage location and name File = new File (Environment. getExternalSto

One step to learn remoting: start with simple I. What are the advantages and disadvantages of remoting?Advantages:1. allows us to conduct distributed development2. Fast TCP channel remoting3. Although it is remote, It is very close to the local call object.4. The object state can be maintained.5. There are no application restrictions. You can use the console, winform, IIS, and Windows Services to host remot

mutex, the calling thread obtains ownership of the mutex object. Otherwise, the calling thread does not obtain ownership of the mutex. To determine if the caller created the mutex, see the Return Values section. Lpname [in] Long pointer to a null-terminated string specifying the name of the mutex object. The name is limited-MAX_PATH characters and can contain any character except the backslash path-separator character (\) . Name comparison is case sensiti

I used the simplest method of using the JDK command wsimport-keep-p package path- d code to store the location wsdl URL Blue is the command, Pink is the storage location , Orange is the URL C:\Program files\ibm\sqllib\java\jdk\bin>wsimport-keep-p com.demo.client -D C:\Users\IBM_ADMIN\Documents\MyWorking\WebService\WSDL2JAVA Http://ws.webxml.com.cn/WebServices/MobileCodeWS.asmx?WSDL Parsing WSDL ...[WARNING] Ignoring soap port "MOBILECODEWSSOAP12": it uses non-standard SOAP 1.2 binding.Yo

. Interprocess communication: Shared memory Multithreading for multitasking 19, process and thread of the difference and contact 20, the basic operation of the thread 21. Introduction of thread stack size usage 22. Thread Private Data 23. Thread Pool Multi-tasking synchronization and mutual exclusion 24. What is synchronization and what is mutual exclusion? 25. Thread synchronization and mutual exclusion: mutual exclusion lock 26. Thr