java 7 interview questions

Java interview questions, java questionsCommon Java interview questions: What if the main method is declared as private? Answer: It can be compiled normally, but the system prompts "the

10 classic Java interview questions and classic java questions 1. How does Java's HashMap work? HashMap is a key value for the data structure. Each key has a corresponding value. The key is to identify such a value. Based on the hashing principle, HashMap stores and obtain

Java interview questions, java questions1/** 2 * write a function. It accepts an integer (assuming length) and returns an array. The length of the array is length, 3 * the content in the array is a random value ranging from 0 to (length-1) and cannot be repeated. 4*5 * If the length is 5, the array may be [, 4]. 6*

to the object.ApplicationName. myVariable = "abc ";Another way is to encapsulate all the code into an automatically executed function, so that all declared variables are declared within the scope of the function. (function(){ var a = "abc";})(); In reality, you may use both methods.5. How to iterate through member variables in JavaScript objects? for(var prop in obj){ // bonus points for hasOwnProperty if(obj.hasOwnProperty(prop)){ // do something here }} 6. What is Closure )?A closure all

establishes a dependency between the beans.Simply put, beans are objects that are initialized, assembled, and managed by the spring IOC container.The process of getting the Bean object, first loading the configuration file with resource and starting the IOC container, and then getting the bean object through the Getbean method, you can call his method.Scope of Spring Bean:There is only one shared bean instance in the Singleton:spring IOC container, which is generally the Singleton scope.Prototy

deadlock problems are common when writing multithreaded concurrent programs, but many candidates are not able to write deadlock free code (no deadlock codes?). ), they struggled. Just tell them that you have n resources and n threads, and you need all the resources to complete an operation. For the sake of simplicity here the n can be replaced with 2, and the larger the data will make the problem look more complicated. Get more information about deadlocks by avoiding deadlocks in

Java's current heat has declined, but there are still a lot of people who learn java. Java's post is also a lot of infiltration. So, those classic Java knowledge points, you can see the problem can say 123? Come and have a look.The difference between 1.JDK and JRE What is the difference between 2.final, finally, and finalize?3. The difference between threads and processesHow does the HashMap in 4.

Java interview questions, java questions 1. storage structures used by stacks and queues Chain storage and sequential Storage 2. understanding of time complexity and space complexityTime Complexity: Number of statement executions in an algorithm, which is T (n). When n ch

requirements graphically in various phases of software development; IBMRational Rose is one of the many UML modeling tools in the requirements phase, often used in drawing examples, class diagrams, sequential graphs. 15. Describe the tool class that you exported, and indicate the maximum amount of data POI (combining cell objects and background color applications) Finally here also found some of Baidu Library interview

The PHP interview questions compiled by NLP are correct. it should not be a problem to find 78k. someone always asks me for these questions and asks me to answer them... now let's get it done. if you can do it well, we suggest you give the salary between 6 and 9 ...? Should the level be in progress? This is something I have tried to recruit people around 12 years

1 , what are the aspects of object-oriented features ?　　The object-oriented programming language has 4 main features: encapsulation, inheritance, abstraction, polymorphism, etc.Details:http://www.cnblogs.com/guweiwei/p/6599289.html2 , access modifiers public,private,protected, and what is the difference between not writing (the default)? 　　Defaults to default when members of a class do not write access adornments. The default is equivalent to exposing (public) to other classes in the same packag

From: http://wxdlut.blog.163.com/blog/static/128770158200992373211377/ Programmers must know: C/C ++ interview questions (7) 1. Introduce STL and explain in detail how STL implements vector. Answer: STL (Standard Template Library. It consists of container algorithm iterator. STL has the following advantages: it can easily search data or Sort data and other algor

into a reference type with a reference type, and unpacking the wrapped value type data from the reference type10. Cts:common type System. int32,int16->int; string->string; Each language defines its own type. NET provides a common type through the CTS, and then the translation generates the corresponding. NET type.Cls:common Language specfication Common Language Specification. different language syntax. Each language has its own syntax. NET provides the common syntax through the CLS, and then ge

. There are several ways to pass parameters. What method is used to implement multi-state parameter transfer, and what is the cause if no method is used;Pass value, pass pointer or reference 6. Use a project to describe how to apply the design pattern.Design Patterns are more concerned with expansion and reuse, and these two aspects are often ignored.However, I do not recommend that you abuse the design pattern to make simple problems more complicated. 7