java beginner interview questions

Web Service Interview Questions and answers What is a Web service? Define people and companies have debated the exact definition of Web Services. at a minimum, however, a Web Service is any piece of software that makes itself available over the Internet and uses a standardized XML messaging system.XML is used to encode all communications to a web service. for example, a client invokes a web service by sen

). Loue: A thread can generate a loue object to manage the Message Queue (Message Queue) in this thread ). Handler: You can construct a Handler object to communicate with logoff so as to push new messages to the Message Queue or receive messages sent by logoff from the Message Queue. Message Queue: used to store messages placed by threads. Thread: the UI thread is usually the main thread, and a Message Queue is created for the Android Startup Program. 8. Let's talk about the principles of

without digital certificates.(2) the digital certificate used by the android package can be self-Signed and does not require signature authentication by an authoritative Digital Certificate Authority.(3) To officially release an Android app, you must use a digital certificate generated by a suitable private key to sign the app, rather than using the debugging certificate generated by the ADT plug-in or ant tool for release.(4) digital certificates are valid. Android only checks the validity per

on another thread's message, and waits until the message arrives when it does not get another thread's message.Thread mutex refers to the exclusive nature of the shared process system resources when each individual thread accesses it. When there are several threads that want to use a shared resource, at most one thread is allowed to use at most, and other threads that want to use that resource must wait until the resource is freed by the resource. Thread mutexes can be seen as a special kind of

reflection? This is the need to setaccessible () method to suppress Java access to the check, at that time felt that the front of the problem was asked the confused, the brain is blank. The rest is not very clear, the overall interview or asked a lot of questions, most of me can be very good answer up, this is to let me feel the most depressed an

I recently saw a blog post posted by Lao Zhao, "questions I asked during the interview with. Net/C # programmers". I tried to answer this question and I forgot to add it: What is. Net? What is CLI? What is CLR? What is Il? What is JIT and how does it work? What is GC? How does GC work? What is. net Dot Net is a complete set of platforms proposed by Microsoft in 2000, including the underlying operating sy

. Net interview questions and answer 1) What is the difference between a thread and a process? Both threads and processes define some boundary. The difference is that processes define applications. Program Boundaries with applications, different processes cannot be shared Code And data space, while the thread defines the boundary between the code execution stack and the execution context. A process can co

nested, must have root element, all XHTML elements must be nested within the root element5, to the Web standardization (or site reconstruction) know what the relevant knowledge, briefly describe a few of the Web standards you know?　　Web standardization is divided into structural standardization, performance standardization, behavior standardization. The structure standard language has XHTML and XML, the performance standard language CSS, the behavior standard language w3c,ecmscriptWeb standardi

/details/47017485Extended here: Brief introduction to Binder, http://blog.csdn.net/luoshengyang/article/details/6618363/　　6. What is the difference between HTTP communication and HTTPS communication, and the specific process of HTTPS communication?http://blog.csdn.net/whatday/article/details/38147103　　7. How to implement the source code for such a collection of list,arraylist.　　　　55259978Android Related:　　1. About Android memory optimization, layout optimization.http://blog.csdn.net/guolin_blog/

.x:sorted (iterable,/, *, Key=none, reverse=false), python2.x and sorted are somewhat different, with fewer CMP parameters.Key accepts a function that accepts only one element, the default is NoneReverse is a Boolean value. If set to True, list elements are sorted in reverse order and default to FalseFocus on how key works:key specifies a function that receives a parameter that is used to extract a keyword from each element for comparison. The default value is None.(2). The. Sorted () function s

current variable in the register (working memory) is indeterminate and needs to be read from main memory; Synchronized is the lock of the current variable, and other threads are blocked only if the variable is accessible to the front-thread.(3) volatile does not cause thread blocking, and synchronized can cause thread blocking.(4)volatile can only synchronize the value of a variable between the thread memory and the main memory, while synchronized synchronizes the values of all variables betwee

The interview also summarizes the first and two, this third may be more inclined to the inner monologue and interview skills summary ....First, MonologueBefore interviewing others, now it's your turn to find a job, how to say, each interviewer's views are different, interview the way is not the same, for example, I interview