common java interview questions

InC/C ++In the interview process of programmers, many interview questions seem simple, but they need profound basic skills to give a perfect answer. Enterprises require the interviewer to write the simplest strcpy function to see how technically the interviewer has achieved. Can we really write a strcpy function? We all think we can, but the strcpy we write may o

separately, which belongs to the salvage function operation.Interview question: Please explain the difference between ArrayList and Vector.· These two classes are subclasses of the List interface;· The Vector class is provided at JDK 1.0, and the method of operation provided is synchronous, so it is thread-safeThe Operation class;· The ArrayList class is provided at JDK 1.2, and the method provided is asynchronous, so it belongs to the non-linearProcess-safe Operation classes.If later in develo

create threads, how to create threads better (such as inheriting the thread class or calling the Runnable interface), and then gradually ask about concurrency problems like the Java memory model encountered in the process of Java concurrent programming, JDK1.5 introduces higher-order concurrency tools, common design patterns for concurrent programming, classic m

Java Collections Interview QuestionsIn Java, collection interview questions is mostly asked by the interviewers. Here are the list of mostly asked collections interview questions with a

Java Multithreading interview QuestionsMultithreading and synchronization are considered as the typical chapter in Java programming. In game development company, Mulithreading related interview questions is asked mostly. A List of frequently asked

Source: Old Money high-availability architectureGuidance: Redis-related knowledge is a frequently asked topic during a programmer's interview. As a veteran technical interviewer who has hit hundreds of thousands of people in the Internet technology industry, the author summarizes the frequently asked questions in the interview process. is well worth reading. Auth

This article mainly shares several JavaScript interview questions. I hope this article will help you to pass the interview smoothly. For more information, see the relevant coders. 1. What are the two methods for creating JavaScript objects? This is a very simple problem if you have used JavaScript. You have at least learned one way. However, based on my experien

tables and indexes into smaller, easier-to-manage partitions.46. You have just compiled a PL/SQL package with error reporting, how do I display an error message?Answer: SHOW ERRORS47. How do I collect various status data for a table?Answer: ANALYZEThe ANALYZE command.48. How to start the session level traceAnswer: Dbms_session. Set_sql_traceALTER SESSION SET sql_trace = TRUE;The different points of the 2 tools, import and Sql*loaderAnswer: These two Oracle tools are used to import data into a d

Follow Finddreams Blog: http://blog.csdn.net/finddreams/article/details/44301359In the previous article we have learned some basic questions about the Android written test, "Android development interview by--2." Common Android Basic pen questionsBut as an experienced developer, just know the basic problem is not enough, your resume said there are more than two ye

The PHP interview questions compiled in this article mainly come from two methods: one is the string and file operation example, and the other is the examples of several commonly used sorting algorithms. Let's take a look at them. The PHP interview questions compiled in this article mainly come from two methods: one is

Multithreading and concurrency issues are one of the questions that interviewers prefer to ask in a Java technology interview. Here, the most important questions are listed from the interview point of view, but you should still have a solid grasp of

common Linux commands is: Command [Option] [parameter] Command Option [parameter] Command [Option] [parameter] Command Option Parameter A: The correct syntax for Linux commands is: Command [Option] [parameter]. Q.11: Make a difference. Vi Vim Cd Nano A: cd is different from other commands. Vi, vim, and nano are both editors used to edit documents, while cd is used to switch directories. That's all. How many

understand the process of solving the problem, and find out what the individual has done, how to do, and what has been harvested. This is the accumulation of experience. The company ultimately needs to contribute to the work of the staff, so the need for experienced people to help solve the problem, then the ability to solve problems and thinking is very important. For students who do not have much experience, such as a new graduate or an intern, then they need a good foundation and some person

The Java Collection framework is the foundation of the Java programming language and is an important knowledge point in the Java interview. Here, I've listed some important questions and answers about the Java collection.What is a

Regular Interview Questions and answers by a ribaba Java engineer, Baba java 1. Implementation of Spring AOP and IOC Http://blog.csdn.net/tarena_lixy/article/details/7096114 Http://blog.csdn.net/kiss_vicente/article/details/6901295 Http://blog.csdn.net/it_man/article/details/4402245 2. Distributed message queue and dis

wrapper type , which means that the wrapper type can be converted directly to the base data type , as shown in the following code:int m=100; Integer im=int N=im; The appeal code directly assigns m to the wrapper object IM, which is automatically boxed and then directly assigns the IM to the basic data type N, which is the automatic unpacking. Although the code on the surface is simple and convenient, however, in essence, the container still uses new to create the object, while unpacking is s