java coding interview questions

Before I resigned, I gave my company a set of interview questions. What do you think is difficult ?? Oracle Database assessment: 1. Write a jdbc connection to the database and add, delete, modify, and query data code (simply write it ). Answer: PublicstaticvoidMain (String [] args ){ //TODOAuto-generated method stub Connection cn =Null; CallableStatement cstmt =Null; Try{ // Do not do this here, because th

Summary of the interview questions of Spring and SPRINGMVC Application scenarios, AOP principles, benefits of AOP in 1.Spring. A: Aop--aspect oriented programming is programming for facets and is used to encapsulate crosscutting concerns in the following scenarios: Authentication permissions, Caching cache, context passing content delivery, error handling Errors handling lazy loading lazy loading, debuggin

Android interview questions 1. Whether the process of android dvm is the same concept as that of Linux: A: dvm is a dalivk virtual machine. Every android application runs in its own process and has a dalivk Virtual Machine instance. Every dvm is a process in linux. Therefore, it can be considered the same concept. 2. What types of android animations are available? What are their characteristics and differen

the reuse of the cell without confusion. After the data is configured, by updating the constraint, the frame of the last control can be determined only by determining the height that the cell actually needs, and caching it, the next time it is acquired, the judgment exists, and if it exists, it returns directly. Therefore, it is calculated only once.20. How does the UITableView calculate the content height? Why does the proxy method that gets the row height call the data bar several times when

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

, concurrent programming common design patterns, classic multithreading problems such as producer consumers, philosophers dining, A reader or a simple bounded buffer problem. Just knowing the basic concept of threading is far from enough, you must know how to deal with the concurrency problems such as deadlock, race condition, memory conflict and line Cheng. With these tips, you can easily handle multithreading and concurrent interviews. It's normal for many

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,

problem. Just knowing the basic concept of threading is far from enough, you must know how to deal with the concurrency problems such as deadlock, race condition, memory conflict and line Cheng. With these tips, you can easily handle multithreading and concurrent interviews. It's normal for many Java programmers to go to the interview before the interview. Becau

, readers, or simple bounded buffer issues. Just knowing the basic concept of threading is far from enough, you must know how to deal with the concurrency problems such as deadlock, race condition, memory conflict and line Cheng. With these tips, you can easily handle multithreading and concurrent interviews. It's normal for many Java programmers to go to the interview before the

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