multithreading interview questions java advanced

(); IProduct product=factory.createproduct (); Product. Productmethod ();} 6. Create a list by handwriting, define list, generics. (1) List list=new ArrayList (); (2) List (3) Student s=new Student (); (4) List.add (s); 7. Security: The difference between Hassmap and hasstable. That's not safe. Why. How to facilitate hashmap. Threading aspect: Threads have several states. Talk about the security problem of multithreading; ask for threads and sync.Wri

is responsible for finding and loading classes of class files at runtime. 55. Can a Chinese character be stored in a char variable? Why? It can be defined as a Chinese character. Because java uses unicode encoding and a char occupies 16 bytes, it is okay to put a Chinese character. 56. What are several implementation methods for multithreading? What are the implementation methods of synchronization?

methods.A class can implement many interfaces, but only one abstract class is inheritedClasses can not implement all methods of abstract classes and interface declarations, and of course, in this case, the class must also be declared abstract.An abstract class can implement an interface without providing an interface method implementation.The variables declared in the Java interface are final by default. An abstract class can contain non-final variab

Java Questions Answers 1. What is the difference between an applet and an application? A Java application is made up of a main () method declared as public static void that accepts a string array argument, along with any other classes that main () CILS. it lives in the environment that the Host OS provides. A Java a

rivate static final int avg=4;private static final int mallcount=400;private static int mcurrencount=0;public static void main (string[] args) {//delay counting !//int times = mallcount/avg;//for (int i = 0; I -------------------executorcompletionserviceusually get results with get (), the method forms a block.and take () to get the result of a task that has ended------------------Getresultrightnow/** * Get non-blocking results * * @author Lean @date: 2014-10-7 */public class Getresultrightnow

"Declaration" Source: Power node Java Institute, reprint Source: Script House (The answer to a small number of questions was slightly altered by me) 1, what is the thread local variable. A thread-local variable is a variable within the thread itself, owned by the thread itself, and not shared among multiple threads. Java provides a ThreadLocal class to support t

1. What is acitsag startup mode? For such a question, I will write an example myself. I will observe it to understand it. Activty supports four startup modes. Launchmode: Standard: each time a new activity window is started (New Operation) Singletop: if it is a target activity at the top of the stack, It will be opened directly. Otherwise, a new activity window (new) will be opened ). Singletask and singleinstance are basically the same. The difference is that if the root activity is set to sing

I was also reading the interview book while learning the video. The record is as follows: 1. LostAfter learning the 2010java high-tech video from Teacher Zhang Xiaoxiang for so many days, he looked at generics, reflection and other things and turned his mind away. He just learned that none of the Main Lines dragged me. That is to say, I am eager to know what major technologies will be required for future development and what is the core of

This is the topic discussed during the last interview and is recorded.Spring Why use Spring? What are the benefits of IoC? What are the benefits of scalability? How to instantiate a Bean? What is the difference between ApplicationContext and BeanFactory? How can I read external files through Spring? Can Bean IDS be repeated in the Spring configuration file? What is automatic assembly and type check in Spring? Can ApplicationContext be loaded

This is the topic discussed during the last interview and is recorded. Spring Why use spring? What are the benefits of IOC? What are the benefits of scalability? How to instantiate a bean? What is the difference between applicationcontext and beanfactory? How can I read external files through spring? Can bean IDS be repeated in the spring configuration file? What is automatic assembly and type check in spring? Can applicationco

1.mysql Date (days) group BY2.servlet life cycle3. Different ways to define string = = and equals4.js string defines a new method5.public Private protected Default Difference6. Multi-threaded scenarios and solutions7. Talk about your knowledge of database affairs.Understanding and usage of IOC AOP in 8.spring9. About Spring's management of beans10. How to use spring-managed beans in code11.hibernate How to define relationships between tables12.hibernate How to execute custom SQL13. Please descri

Horse Soldier Big Data Architect (1)Link: http://pan.baidu.com/s/1qYTW1m0 Password: LXJDSpring CloudLink: Http://pan.baidu.com/s/1bzG9vK Password: zy2bLink: Http://pan.baidu.com/s/1qXF3eGG Password: 19u9Design and practice of micro-service architectureLink: Http://pan.baidu.com/s/1slNiP5N Password: u6euBEIJING-PK Education Linux Big Data video sharingLink: http://pan.baidu.com/s/1c2Aci6c Password: m7bnStill Academy ~ Internet architect CompleteLink: http://pan.baidu.com/s/1mhJFca0 Password: 25at

executing the Wait,sleep,join method will throw interruptedexception, if the normal state, we can through isinterrupted () =true, To stop the thread from using the return method.(vii) Start and run methods for threadsNote that for a thread to run, only the Start method is executed, this method is the native method, the Run method is where we define the task, and a separate call to the Run method is the same as invoking the normal method. The Start method can only be called once, and more than o

Controller: When the user clicks the Submit button in the Web page, the controller accepts the request and invokes the appropriate model to process the request. The corresponding view is then called according to the result of the processing to display the results of the processing. MVC process: First the controller accepts the user's request, invokes the corresponding model for business processing, and returns the data to the controller. The controller invokes the corresponding view to

(intx = 0; x ) { - //Invoke function - intnum =getrandom (start, end); - //Output Results - System.out.println (num); in } - } to + /* - * Write a function two explicit: return value type: int argument list: int Start,int end the */ * Public Static intGetrandom (intStartintend) { $ //think back to the random numbers we talked about between 1-100.Panax Notoginseng //int number = (int) (Math.random () * +) + 1;//(int) (Math.r

. 28th, Programming question: Calculate 2 times 8 in the most efficient way? Programmers with a C background are particularly interested in asking such questions. 2 29th, two object values are the same (x.equals (y) = = true), but can have different hash code, this sentence is correct? No, there's the same hash code. 30th, when an object is passed as a parameter to a method, this method can change the property of the object and return the result