how to prepare for java interview

In the Java Pure Grammar interview, mainly encountered some of the basic interview questions, summarized here!First, to talk about final, finally, finalize the difference. final-modifier (keyword) If a class is declared final, it means that it can no longer derive a new subclass and cannot be inherited as a parent class. Therefore, a class cannot be declared a

Java uses a graph-like approach to garbage collection management, you can eliminate the problem of reference loops, such as having two objects and referencing each other, so that GC can reclaim them as long as they and the root process are unreachable.Memory leaks in Java: Long life-cycle objects that hold references to short life-cycle objects are likely to have a memory leak, even though short life-cycle

Interview Summary (i)--java Basic related knowledgeRecently in the interview, so summarize the interview easy to ask the knowledge points, used for backup viewing.If you need to reprint, please indicate the source.1. Object-oriented features; 1. Simplifying Complex things2. Object-oriented to turn the performer in the

Dark Horse programmer ---- java-based operators, keyboard input, if switch statements, related Interview Questions, ---- javaswitch ------ Java training, Android training, iOS training, and. Net training. We look forward to communicating with you! ------- 1: Operator (master)(1) Arithmetic Operators A: +,-, *,/, %, ++ ,-- Note: Only integers can be obtained for i

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, the key knowledge listed, in order to review, in each content appended to the conten

Record the interview encountered in some of the Java blind area, on the one hand scan their knowledge blind area, on the one hand can also give the back of the interview friends some warning, so as to avoid the interview when there is no known embarrassing situation. Ask the question: Parent class static property,

Java interview questions Basic knowledge:1. simple principles and applications of the Exception Handling Mechanism in C ++ or Java. When a Java program violates the Java Semantic Rules, the Java Virtual Machine will indicate an er

Android development interview: 4. Common basic Java questions, androidjava Follow finddreams blog: http://blog.csdn.net/finddreams/article/details/44403041Because Android is programmed using the Java language, it is necessary for us to fully master the Java foundation for Android development. During the

Spring is undoubtedly the hottest frame in Java, with a wide range of uses, almost every company interview involves spring and database, you can not be familiar with struts, but must not show that spring does not understand. the Nineth article wins the interview to introduce the spring regular test center. The weight of the database will be in the back of five to

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

thread pool manages a set of worker threads, and it also includes a queue that is used to place tasks that are waiting to be executed.Java.util.concurrent.Executors provides an implementation of the Java.util.concurrent.Executor interface for creating a thread pool. The thread pool example shows how to create and use a thread pool, or read the Scheduledthreadpoolexecutor example to learn how to create a periodic task.Java concurrency interview questi

JAVA multi-thread and concurrent basic Interview Q Multithreading and concurrency are one of the questions that the interviewer prefers to ask during the Java technical interview. Here, most important questions are listed from the interview perspective, but you should stil

primitive types in generics. The 2nd difference between them is that you can pass any type with a parameter to the original type List, but you cannot pass list144, write a generic program to implement the LRU cache?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 fu

volatile keyword, in the requirements of concurrent programming ability of the interview is very easy to examine, I will briefly explain to you later.Enter the head node of a single linked list and print out the value of each node from the end of the tail.This is "The sword refers to offer" on the fifth interview problem, linked list is often in the interview of

Big talk programmer interview 10 I like to ask the programmer the interview question Programmer Interview Not complete guide 10 Classic C-language interviewing basic algorithms and code 10 successful interview Skills for programmers Programmers choose 8 criteria for a company Programming D

class) means that 1 creates an object of the static internal class and does not need an external class object, 2. You cannot access an external class object from an object of a static internal class. Java interview questions: October 22, 1234 11. Is a bitwise operator. Is a Boolean logical operator. 12. Differences b

Java Architects interview questions, how to become architectsOften interview some candidates, sorted out my interview using the topic, LU continued to organize a lot of problems, so each time to draw a part to ask. The answer will be gradually released in later articles. Basic Topics State of

JAVA engineer interview questionsZookeeper I went to a company for an interview today. I felt dizzy with my brains. I didn't make a few algorithm questions. The questions were relatively simple. I should have prepared myself, but the status was not good, after the interview, I felt quite dissatisfied. I still had to wa

A bit of resources on the Internet, to organize a number of common Java basic interview knowledge points, hoping to help students who have just started or are learning.1. AbstractAbstraction is about ignoring aspects of a topic that are not related to the current goal, so that you can more fully focus on the aspects that are relevant to the current goal. Abstractions do not intend to understand all of the p

Basic Java Learning (interview cookbook):What is the difference between the "= =" and the Equals method in 1.java?(1) The = = operator is specifically used to compare the values of two variables equal, that is, to compare variables stored in memory for the same value, to compare two basic types of data or two reference variables are equal, can only use the = = op