java interview questions for 7 years experience

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A summary of the classic Java surface questions of Ali years

of reflection, how to optimize?Definition of reflection mechanism:is in the running state, for any one class, can know all the properties and methods of this class, any object can be invoked through the reflection mechanism of a class of any method, the dynamic acquisition of class information and the function of dynamic call class object method is called Java reflection mechanism.The effect of reflection:1. Dynamically create an instance of the clas

20-Way Java interview required questions

. After creating an array or an object in the heap, you can also define a special variable in the stack that is equal to the first address of the array or object in the heap memory, and this variable in the stack becomes the reference variable of the array or object. The reference variable in the stack can then be used in the program to access an array or an object in the heap, which is equivalent to a name that is an array or an object.2 0. Can i cast int to a variable of type byte?What happens

2018 Java Thread Top interview questions, how much do you know?

Is it difficult or difficult to interview? It depends on the interviewer's background (gas field + skills), mentality and cognitive and communication skills. Interview can be understood as a chat and negotiation, in the process of psychological, ideological collision and game. In fact, you just need to figure out a logic: "Why does the interviewer ask?" What answer does he want to hear? "Then the targeted p

Interview Questions for Java engineers [social recruitment], java engineers

Interview Questions for Java engineers [social recruitment], java engineers Http://blog.csdn.net/jackfrued/article/details/44921941 1. What are the features of object orientation?2. What are the differences between access modifiers public, private, and protected?3. Is String the most basic data type?4. Is float f = 3.4

Java GC Interview Questions

JVM virtual machine" Basic can answer this degree, in fact, to this extent I have been more than expected. Also less than 10%.4. In addition to 3, can also be clear serial, parallel (collation/Not defragment), CMS, such as the role of the collector can be the age, characteristics, advantages and disadvantages, and can explain the control/adjustment of the collector selection method.Analysis: The 4th with the above 2 questions.Finally introduce your own background, in a modest listed software co

Java Collections Interview Questions

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 Questions

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

Java Architects share their experience, from yards to architects I spent eight years

have what kind of technical knowledge system, this is not only a junior programmer who has just entered the workplace, but also after 35 years of work began to confuse the old programmer, Must face and want to understand the problem. In order to help people less detours, I summed up a Java programmer's work 2-5-year roadmap for growth.For the above figure in the technology I deliberately tidy up a bit, the

Some questions about the Java interview

(throughput) collector? The throughput collector uses a parallel version of the new generation garbage collector, which is used for medium-sized and large-scale data applications. The serial collector is sufficient for most small applications, which require about 100M of memory on modern processors. 41. In Java, when can objects be garbage collected? This object can be recycled when the object becomes inaccessible to applications that currently use t

JAVA multithreading and concurrent basic interview questions and Answers __java

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

Java Algorithm interview questions: What are the methods for sorting? List. Use JAVA to implement a fast sorting. Select bubble quick set to sort by at least four methods, java Algorithm

Java Algorithm interview questions: What are the methods for sorting? List. Use JAVA to implement a fast sorting. Select bubble quick set to sort by at least four methods, java Algorithm Package com. swift; import java. util. arra

It value-added services, customer case (a)----------Qingdao, Shandong, 2 years. NET experience, turn Java development for half a year

Customer Overall Situation: 2 years. NET development experience, in 2014 just turned Java half a year, a few questions about Java is not very clear, just to Jsp/servlet/javabeanSpring, SPRINGMVC, mybatis a bit of a basic understanding.The main use of the above-mentioned foun

It took me 7 years to grow into Ali Java architect, what about you? (with Learning route map)

Preface: I spent seven years, step by step to the present, halfway also have learned about other technologies, but also want to transfer other languages, but finally insisted on the Java this road, I hope that my experience can help to later people, if you have the help, you can point like attention.Guide:1. The architect should not write code2, why the system is

It took me 7 years to grow into Ali Java architect, what about you? (with Learning route map)

Preface: I spent seven years, step by step to the present, halfway also have learned about other technologies, but also want to transfer other languages, but finally insisted on the Java this road, I hope that my experience can help to later people, if you have the help, you can point like attention.Guide:1. The architect should not write code2, why the system is

40 Java Collection interview questions and Answers

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

Summary and Induction of JAVA interview questions of Niuke Network (1), Niuke java

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

Interview Questions and answers for 40 Java sets and 40 Java Sets

Interview Questions and answers for 40 Java sets and 40 Java Sets Provided by Beijing shangxuetang 1. JavaWhat is a collection framework? What are the advantages of a collection framework? Each programming language has a set. The original Java version contains several collec

Java study _ Java interview questions

First, let's talk about the differences among final, finally, and finalize. Second, can Anonymous Inner Class (Anonymous internal Class) be extends (inherited) other classes, or implements (implemented) interface (interface )? Third, the difference between Static Nested Class and Inner Class is that the more you say, the better (the more general the interview questions are ). Fourth, the difference between

JAVA Architect interview questions, how to become architect __java

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. B

Java Practice Questions: solving a two-time equation, judging leap years, judging the standard body, three numbers to take the maximum value

standard weightNote:The meaning of the standard body weight: Height-weight (kg) and 100 (110) Subtract, the difference is more than 3 is thin, less than 3 is overweight, between 3 and 3 is the standard. Scanner sc=new Scanner (system.in); System.out.println ("Please enter gender (male or female):"); String Sex=sc.next (); System.out.println ("Please enter height:"); int height=sc.nextint (); System.out.println ("Please enter weight (kg):"), int weight=sc.nextint (), int a=height-

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