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discard other tasks after the D.looper, each Looper create a message queue and thread object, not a resource pool; so the answer is AC9. The following understanding of the Android Ndk is correct ( ABCD )A, the NDK is a collection of a series of toolsB, NDK provides a stable, limited functionality of the API header file declarationC, so that "java+c" the development of the way finally become a positive, officially supported the development of the wayD
maintainability and non-repetition of wheel-making. For example, all spring templates (JDBC,REST,JPA, and so on) have the following advantages: they are built in a consistent way, so you can skip these general steps to focus on more important business logic.
Spring MVC is not necessarily the best web framework. There are other, for example, Struts 2,wicket and JSF. That said, spring can also be well integrated with these frameworks (STRUTS,JSF, etc.).
XML files are too bloated, and this
Android interview questions
1. Which of the following statements about memory reclaim are correct? (B)A. the programmer must create a thread to release the memory.B. The memory reclaim program is responsible for releasing useless memory.C. The memory reclaim program allows programmers to directly release the memory.D. The memory reclaim program can release memory objects at the specified time.
2. The follow
briefly summarize below:
TCP multiplexing: TCP connection multiplexing is the reuse of HTTP requests from multiple clients to a single server-side TCP connection, while HTTP multiplexing is the processing of multiple HTTP requests by one client over a TCP connection. The former is a unique feature of the load balancer device, which is a new feature supported by the HTTP 1.1 protocol and is currently supported by most browsers.
Content caching: Caches the content that is often used,
Interview Diary--Alibaba Java interview
Ali's interview is the most stressful one, but also the most test of technology.Did not expect Ali's interview notice is now received, can be said to be belated love it.Interview The remote interv
Interview Questions:. Net remoting
1. What's a Windows Process?
It's an application that's running and had been allocated memory.
2. What's typical about a Windows Process in regards to memory allocation?
Each process is allocated its own block of available Ram space, no process can access another process 'Code or data. if the process crashes, it dies alone without taking the entire OS or a bunch of
Spring, hibernate, Struts interview questions from: http://shwenwen.itpub.net/post/34911/486887
How does hibernate work and why?Principle:1. Read and parse the configuration file2. Read and parse the ing information and create sessionfactory3. Open sesssion4. Create transaction Transation5. Persistent operations6. Submit the transaction7. Disable session8. Disable sesstionfactory
Why:1. For JDBC access
Java provides and supports creating abstract classes and interfaces. Their implementations share the following things:
All methods in the interface are implicitly abstract. Abstract classes can contain both abstract and non-abstract methods.
Class can implement many interfaces, but can inherit only one abstract class
Class to implement an interface, it must implement all methods declared by the interface. However, classes do not implement all
Echo is a language structure and has no return value. The print function is basically the same as echo. The difference is that print is a function and has a return value. print_r is a recursive print, which is used to output the PHP interview questions and answer 1 of the array object.
1. use PHP to print the previous day in the format of 22:21:21
// Echo date ('Y-m-d H: I: S', time ()-60*60*24Echo date ("
First Interview Questions (Java direction, China Rural Credit Cooperative)
1. What are the basic types of Java?
Byte, short, Int, long, float, double, Char, and Boolean.
2. Write a common design pattern?
Http://blog.csdn.net/xuqianghit/archive/2010/07/24/5761816.aspx
3. Explain the polymorphism in
security.Even so far, some people don't even know the basic semantics of SQL syntax.String sql = "SELECT * from Tb_name where name= '" +varname+ "' and passwd= '" +varpasswd+ "'";If we pass [' or ' 1 ' = ' 1] in as varpasswd. User name feel free to see what will become?SELECT * from tb_name = ' random ' and passwd = ' or ' 1 ' = ' 1 ';Because ' 1 ' = ' 1 ' is sure to be true, so you can pass any validation. What's more:Put [';d rop table tb_name;] Incoming in as VARPASSWD:SELECT * from tb_name
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
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Part 2: Spring, hibernate, and struts interview questions
How does Hibernate work and why?Principle:1. Read and parse the configuration file2. Read and parse the ing information and create SessionFactory3. Open Sesssion4. Create transaction Transation5. Persistent operations6. Submit the transaction7. Disable Session8. Disable SesstionFactory
Why:1. The code for JDBC database access is en
Introduction: This is a PHP interview I have encountered. Here I will record the details page, introducing PHP, related knowledge, skills, experience, and some PHP source code.
Class = 'pingjiaf' frameborder = '0' src = 'HTTP: // biancheng.dnbc?info/pingjia.php? Id = 337763 'rolling = 'no'>
Continuous updates. If you have good questions and want to share them or have better explanations or methods, please
Sp. Net interview questions
(To original address http://blog.sina.com.cn/s/blog_524c848901009e7b.html ~ Type = v5_one label = rela_nextarticle author Li Yang's blog http://blog.sina.com.cn/liiyang)
1. Briefly describe the access permissions of private, protected, public, and internal modifiers.
A. Private: Private Members can be accessed within the class.
Protected: protects members, which can be accesse
ASP and net interview questions
1. Briefly describe the access permissions of private, protected, public, and internal modifiers.A. Private: Private Members can be accessed within the class.Protected: protects members, which can be accessed within the class and in the inheritance class.Public: A Public member. It is completely public and has no access restrictions.Internal: accessible within the same name
the application, so hibernate level two caches are Concurrency problems are possible, so an appropriate concurrency access policy is required that provides the transaction isolation level for cached data. The second-level cache is optional and is a configurable plug-in, which, by default, is not enabled by Sessionfactory.When hibernate accesses the data object according to the ID, it is first checked from the session level cache, and if the level two cache is configured, then it is checked from
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