java 8 multithreading interview questions

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

. 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

piece of data, which applies to data that is often read but rarely updated* Transactional: This strategy is a fully transactional cache strategy, can be used in JTA environment 7, hibernate inside the sorted collection and ordered collection what is the difference Sorted collection is sorted in memory through the Java comparerThe ordered collection is the 8, hibernate, and why they are sorted in the databa

(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

after the software is released. 7. String S = new string ("XYZ"); several string objects are created. A: Two. One character object and one character object reference the object. 8. How much is math. Round (11.5? Math. Round (-11.5) and so on A: math. round (11.5) = 12; math. round (-11.5) =-11; the round method returns a long integer closest to the parameter. After the parameter is added to 1/2, the floor is obtained. 9. Short S1 = 1; S1 = S1 + 1; wh

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

Java Basics 1. What are the features of object orientation? 1. Abstraction: Abstraction is to ignore those aspects irrelevant to the current target in a topic, so that you can pay more attention to the aspects related to the current target. Abstraction is not intended to understand all the problems, but to select a part of the problem. Abstract: Process abstraction and data abstraction. 2. Inheritance: Inheritance is a hierarchical model that connects

Java Basics 1. What are the features of object orientation? 1. Abstraction: Abstraction is to ignore those aspects irrelevant to the current target in a topic, so that you can pay more attention to the aspects related to the current target. Abstraction is not intended to understand all the problems, but to select a part of the problem. Abstract: Process abstraction and data abstraction. 2. Inheritance: Inheritance is a hierarchical model that connects

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

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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

construct character data. 8. What are the similarities and differences between runtime exceptions and general exceptions? An exception indicates an abnormal state that may occur during the running of the program. An exception indicates an exception that may occur during common operations on the virtual machine. It is a common running error. The Java compiler requires that methods must declare and throw pos

1. What is Java ee?A: Java EE is a multi-layer (Multi-diered), distributed (distributed), and component-based enterprise-level application model (enterpriese application model) proposed by Sun ). In such an application system, different components can be divided by function. These components can be located on different computers and at the corresponding level (Tier. The hierarchy includes the Client layer (

the Extract method,Here is the implementation of the Extract method:Private E Extract () { finalthis. Items; = Items[takeindex]; NULL ; = Inc (TAKEINDEX); --count; Notfull.signal (); return x;}It is similar to the Insert method.In fact, from here we should understand the implementation of the blocking queue principle, the fact that it and we use object.wait (), object.notify () and non-blocking queue implementation of the producer-consumer thinking similar, but it here

I. Application of the factory model in development Interview Questions:Write a simple calculator. Code implementation: Abstract An operation class: Package COM. qianyan. calcuator; public abstract class operation {// number one private double num1; // number two private double num2; Public double getnum1 () {return num1;} public void setnum1 (double num1) {This. num1 = num1;} public double getnum2 () {return num2;} public void setnum2 (double num2)

character data is changing. Typically, you can use stringbuffers to dynamically construct character data.8. What are the similarities and differences between runtime exceptions and general exceptions?An exception indicates an abnormal state that may occur during the running of the program. An exception indicates an exception that may occur during common operations on the virtual machine. It is a common running error. The

Requirements: Compile a function to intercept a string. The input is a string and number of characters, and the output is a string truncated by bytes. However, make sure that no half of Chinese characters are cut, for example, "my ABC" 4, it should be cut to "my AB", input "my ABC Han DEF", 6, the output should be "I abc" instead of "I ABC + Han ". Basic knowledge: First, let's take a look at the basic units:1. bit is a binary bit. For example, 100011 is 6 bits.2. bytes (byte), which is the most

The following questions will be used:4Tables. For details about the fields in these four tables, refer to the following content: Employees (employee_id number (6) Not null, first_name varchar2 (20), last_name varchar2 (25) not null, email varchar2 (25) not null, phone_number varchar2 (20 ), hire_date date not null, job_id varchar2 (10) Not null, salary number (8, 2), commission_pct number (2, 2), manager_

The dashed box represents the interface, the solid wireframe represents the entity class, The thick wireframe represents the most commonly used entity classes, the dashed arrows indicate the implementation of the interface, and the implementation arrows indicate that the class can make objects of the class that the arrows refer to. Collection: Allows only one object to be placed in each location. It includes a list of "holding a set of objects in a certain order", and a set that "only allo