java architect interview questions

multithreaded programs, multiple threads are executed concurrently to improve the efficiency of the program, and the CPU does not go idle because a thread needs to wait for resources. Multiple threads share heap memory, so creating multiple threads to perform some tasks is better than creating multiple processes. For example, Servlets is better than CGI because Servlets supports multithreading and CGI does not support it.How does the volatile keyword work in

rewrite the aof file, the performance impact of this persistence is minimal, but the aof file will continue to grow, aof file over the General Assembly to affect the recovery speed of master restart. Master should not do any persistent work, including memory snapshots and aof log files, in particular, do not enable memory snapshots to persist, if the data is more critical, a slave open aof backup data, the policy is synchronized once per second. Master calls bgrewriteaof rewrite aof file, a

many occurrences in the array are greater than half @Test public void Test () {int[] num = {1,2,2,2,2,2,2,4,2,4,6,4,2,6,8,2,7,7}; SYSTEM.OUT.PRINTLN (Morethanhaft (num)); } public int morethanhaft (int[] num) {int result =-1; int times = 0, for (int i=0;iTopic Eight:Determines whether an array is the stacking order of another stack @Test public void Test () {int[] num = {1,2,3,4,5};//int[] num1={1,2,3,5,4}; int[] num2={2,1,5,3 , 4}; stackTopic Nine:Draw 5 cards from poker, 0

Today, I found the java interview programming questions in the Forum and thought about it. I found that I forgot my original programming basics. Question: How many equals 2x8 in the most efficient way? Along with the targeted thinking, I thought of 2x8. Later I thought that this efficiency was definitely not the best. think of the concept of a computer system,

1. String S1 = ' 123 ';String s2 = new string ();2. The difference between two ways of implementing multithreadingInheriting the thread and implementing the Runnable interface3. Single-column design mode What's the difference between lazy and a hungry man? * * *Lazy style Features: lazy loading. Delayed loading in multi-threaded security problems, through the addition of synchronization to solve, plus synchronization efficiency is low, with a double-judge method to solve the low efficiency. The

You can only manipulate a type to invert without a generic typeThe code is as follows: Packagecom.swift.fanxing;Importorg.junit.Test; Public classRenyireverse {@Test Public voidTest () {intarr[]=New int[] {1,10,6,9,2}; Reverse (arr); } Public voidReverseint[] arr) { for(inti=0;i) { inttemp=Arr[i]; Arr[i]=arr[arr.length-1-i]; Arr[arr.length-1-i]=temp; } for(intX:arr) {System.out.println (x); } }}Generic functionality can

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Editor's note:The IOS/Android devcamp and cmdn mobile developer club cool summer carnival will be held in Crowne Plaza Beijing, New Yunnan, on March 13, July 27 and July 28. In order to achieve no harm, no goods, this Conference is mainly for iOS and Android first-line technology and developers. During the period before the opening of the Conference, we will interview some important lecturers and mysterious developers to provide some excellent content

The PHP Global Developers Conference will be held in Beijing from May 14, 2016 to 15th, before the meeting, one of the speakers of this event, Link home network platform architect Yi LV teacher to carry out a text interview, the text in bold part for the DevLink reporter, the fine part of the Yi LV teacher. Yi Lv Teacher Hello, can you first introduce your own technology history? Good. I taught myself s

do not feel mysterious, can go to analyze the underlying causes of abnormal faults, I deliberately summed up a system of learning programs, this knowledge is systematically passed through a small program case to everyone.Performance tuning:Application Framework Source code interpretation:Distributed architecture:Micro-service Topics:Team Collaboration Development:Shopping mall Project Combat:To help you get out of this midlife crisis, take the path to a raise.This time we recommend a free learn

This section contains questions about XML in Java, JDBC interview questions, regular expression interview questions, Java errors and exceptions, and serialized faces .125) What is the d

IT Industry Classic interview questions, 121 sets of face questions Resource size: 580.80KBResource type:Publisher: EyelifeRelease Date: 2 days agoTag: Famous Enterprises, computerResource score: 10Download Number: 8574.33/347 Person rating 1 2 3 4 5 Comments Collection report sharing--> Comment Share Collection report upload Using the

Latest Android interview questions and Android interview questions Recently, I want to change my job for some reasons. I want to sort out some questions that I think are worth recording during the interview and give them a referen

Summary of vue interview questions and vue interview questions What is the underlying principle of vue? Communication between vue components? How many methods are used to determine the Data Type in JS? The most common judgment method is typeof. Method for judging known object types: instanceof Constructor: constructor

Spring Interview Questions and Answers, Spring interview questions Spring Overview 1. What is spring? Spring is an open source development framework for java Enterprise applications. Spring is mainly used to develop Java applicati

Android interview questions (2) and android interview questions 1. What is the difference between int and Integer? Java provides two different types: The reference type and the original type (or the built-in type ). Int Is the original data type of

Unity comprehensive interview questions (including answers) and unity interview questions 1. What is a collaborative program? Enable another logic processing when the main thread runs to assist in the execution of the current program. The coroutine is like multithreading, but not multithreading, the Unity coroutine che

What does the scea test (Sun Certified architect) take? (including real questions and test sites) Favorites Scea certificate is a software system. Developers with this certificate can design the structure of the J2EE program and skillfully use the characteristics of J2EE to build a flexible and scalable system, secure Architecture. To pass the scea exam, developers must be able to understand and communicate

Android interview questions (3) and android interview questions 1. Describe the lifecycle of an Activity. Activity lifecycle methods include:OnCreate (), onStart (), onReStart (), onResume (), onPause (), onStop (), onDestory ();Visible life cycle: from onStart () to onStop () called by the System ()Foreground

(Various companies interview original questions) online has done a set of CC ++ integrated test questions, also to test your level (2), cc integrated test questions I have read the last 10 questions and sent them to me. The following is a question, and I have some understan