java code review interview questions

original types, and to use the standard placeholders that are used in the JDK.7. Write a generic program to implement LRU caching?This is the equivalent of an exercise for people who like Java programming. To give you a hint, linkedhashmap can be used to implement a fixed-size LRU cache, which moves the oldest key-value pairs out of the cache when the LRU cache is full. Linkedhashmap provides a method called Removeeldestentry (), which is used by the

Linked list is often in the interview, this article refers to some other articles, together with the small series of their own summary, the basic algorithm has been tested and optimized.Algorithm Daquan (1) There are also some list problems in the single linked list, which will be sorted out in the future.* REFS:* http://blog.csdn.net/fightforyourdream/article/details/16353519* http://blog.csdn.net/luckyxiaoqiang/article/details/7393134 easy to handle

Logical Thinking interview questions-java backend interview-,-java backend(-1) Preface I recently participated in an interview and was very interested in the pen questions. I will retur

Java exception architecture diagram and several interview questions, java architecture diagram questions 1. java exception Architecture The pink ones are checked exceptions, which must be captured by the try {} catch Block or dec

one, you can use a separate technology to address the demand for dynamic web page presentation, but the best way is to take the advantages of both. jsp is oriented by web page designers, servlet is guided by programmers. At present, most Java Development in China is Java Web development. clarifying their responsibilities allows two teams with different expertise to cooperate with each other, and reduce mut

different ways to create objects in JavaA few common questions about Java collectionsWhen classes are loaded and initializedTwo stack implementation queue two queue implementation stackUpdated on 2017/3/12Java Collection.sort () Sort by Time listSingle sign-on principle and simple implementationUpdated on 2017/3/13Aqs detailedJava's concurrent PackageJava Concurrency Toolkit java.util.concurrent User Guide

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

inherit interfaces? Can an abstract class implement (implements) interfaces? Can an abstract class inherit a concrete class (concrete Class)? Is there a static main method in the abstract class?Interfaces can inherit interfaces. Abstract classes can implement (implements) interfaces, and abstract classes can inherit concrete classes. There can be static main methods in an abstract class.Note: As long as you understand the nature and role of interfaces and abstract classes, these

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*7 *

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

, and sleep is typically used to pause execution.4) block queues with Java implementation.This is a relatively difficult multi-threaded interview problem, it can achieve a lot of purposes. First, it can detect whether the candidate can actually write programs with Java threads, and second, can detect the candidate's understanding of the concurrency scenario, and

project, a transaction is made into a service layer through AOP, which enables a business logic operation to be controlled in one transaction if it includes several database operations. 10.Hibernate How it works and why you use it. Principle:1. Read and resolve configuration files2. Read and parse mapping information, create Sessionfactory3. Open session4. Create transaction transaction5. Persistent operation6. Submission of services7. Close session8 off Sessionfactory Why to use:1. The encaps

equals (object) method, then each object in both objects is called hashCodemethod must produce the same integer result, if two objects are not equal according to the equals (object) method, they hashCode do not require unequal calling methods, but for hash tables, the performance is best unequal. Therefore, we'd better rewrite.As mentioned earlier, the String class overrides the Equals () method, but the string class also overrides the Hashcode () method, which is the hashcode () generated from

Summary and Induction of JAVA interview questions of Niuke Network (1), Niuke javaPreface Today, I saw an article on explaining the Spring framework in the Nuggets. The article mentioned Niu Ke's interview questions. As a result, I downloaded the Niuke web app and found that

: The above can solve the POST request garbled problem. There are two garbled methods for GET request Chinese parameter:Modify the Tomcat profile add code to match the project code as follows: Another way to re-encode parameters: StringuserName =newString (Request.getparamter ("UserName"). GetBytes ("Iso8859-1"), "Utf-8") Iso8859-1 is the t

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.

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

Java Interview Review outlineEggEmail:[email protected]Weibo: HTTP://WEIBO.COM/XTFGGEFBlog: http://blog.csdn.net/zhangerqingThis chapter mainly introduces the face of the upcoming Java interview, we should from which aspects to review