java multithreading programming interview questions

());//nio exclusive transmission channel FileChannel fcin = In.getchannel (); FileChannel fout = Out.getchannel (); totlesize = In.available ();//nio Exclusive Transport trolley Bytebuffer buffer = bytebuffer.allocate (4096 ); while ((Eachsize = fcin.read (buffer))! =-1) {//pointer back to 0 and start reading data until the end of the content Buffer.flIP (); fout.write (buffer);//Empty Trolley buffer.clear ();//Set progress bar display content Copyedsize + = Eachsize;jbar.setvalue ((int) (100.0

1. Synchronous, asynchronous, blocking, non-blocking during network programming? Synchronous: The function call does not call the result until it has been obtained, and returns no results.Async: The function call does not call the result and returns the status information until the result is not obtained.Blocking: The current thread hangs before the function call does not get the result. Returned after the result has been obtained.Non-blocking: The cu

not modified, after positioning to the location of the element to be deleted, the program will be deleted elements before the element to copy all the elements, and then one by one back to the linked list, look at the following picture to understand this process: Assuming that the original element in the list is as shown in the previous illustration, now that you want to delete element 3, the list after deleting element 3 is shown in the following illustration: Copyonwritearraylist Concu

Java virtual opportunity automatically leaves. Extension: Thread dump prints the threading information, and the thread containing the daemon is the daemon, possibly: the service daemon, the compilation daemon, the daemon monitoring ctrl+break under Windows, the finalizer daemon, Reference processing daemon, GC daemon. 2, the difference between the thread and the process. A process is the smallest unit in which the operating system allocates resource

can run on multiple processors at the same time. With good design, multithreaded programming improves throughput through more efficient use of idle processor resources. Using multithreading can also help us achieve better throughput in a single-processor system. If a program is single-threaded, the processor is still idle while waiting for a synchronous I/O operation to complete. In a multithreaded program

I can introduce you here, but for each programming model to see what the specific example is, and I can not give you a list of all the code, please understand. In fact, we program as far as possible to stand at a higher level, a lot of truth in fact you will find that you have understood. On the multithreading, we started thinking about two threads (>2 is a mathematical induction?). So what happens to two

The basic course of Java language programming Practice Study Questions Reference answers 1th Chapter Java Programming Overview 1.9 Practice Study Questions 1, the Java running pl

50 Classic Java Programming questions (directory)Title from: http://blog.sina.com.cn/s/blog_60fafdda0100wb21.html "Program 1" Testrabbit.javaTitle: Classical Questions: There are a pair of rabbits, from the 3rd month after birth a pair of rabbits each month, the rabbit long to the third month after the birth o

Feedback on issues with the 2017 object-oriented Programming (JAVA) section on nine-week learning summary1. Blog not written by: Gao Shuping Gao Junmei Fong Mau Wang Ruiqiang Zong Peng Li Xianglong Ma Lun Mitch Mao Provencale--The number of students who do not submit the blog in time is on the rise, please think about the value of Java Learning Blog, and some of

; } public String GetClassID () {return classID; } public void Setclassid (String classID) {this.classid=classid; }}Complement:Studentpxgit log:Programming problem Code Hosting(Results of program operation)(1) Use the stack structure to output several items of an, where an=2an-1+2an-2,a1=3,a2=8(2) write a program to store student English scores in a list in a tree set so that they are automatically sorted by program and output sorted results(3) There are 10 USB drives, there are two import

letter I in the string; intn =0; for(intA =0; A if(' I '= = Str[a]) {n++; }} System. out. println ("(2) The number of occurrences of the letter I in the string:"+ N); System. out. println ("\ n");//(3) Remove substring "my";System. out. println ("(3) Remove substring" my "); System. out. println (S1.substring (S1.indexof ("My"), S1.indexof ("My") +"My". Length ())); System. out. println ("\ n");//(4) converts this string into an array of strings, requiring each array eleme

Java BASIC Programming Questions1. Print out the case1 Public classprog19{2 Public Static voidMain (string[] args) {3 intn = 5;4 Printstar (n);5 }6 7 //Print stars8 Private Static voidPrintstar (intN) {9 //print top HalfTen for(inti=0;i){ One for(intj=0;j){ A if(ji) -System.out.print (""); - if(J>=n-i ji) theSys

In order to select a set of questions for students to participate in the national software competition, the time is 150 minutes. If you have learned Java, you can try to see if it can be made. 1, Programming output calendar. Known2011Year3Month18The day is Friday (2011Year), output calendar. For example, enter3Output: DayIII3. ThuV.Sat. 12345 678910 11 12 13 14

Package com.test;Import Java.io.BufferedWriter;Import Java.io.FileOutputStream;Import Java.io.FileWriter;Import Java.io.OutputStream;Import Java.util.Scanner;public class Demo {public static void Main (string[] args) {/* There are five students, each student has 3 courses of results, from the keyboard input above data (including student number, name, three lessons), calculated* Average results, the original data and the calculated average score are stored in the disk File "stud". */Scanner in=ne

Notes for Java and JSP Programming 1. when the println () method is used for objects of the string type, if the object is null, null is printed instead of nullpointerexception, which may lead to the illusion of reference, subsequent operations on strings may cause problems. 2. nullpointerexception is thrown because the object existence is not verified. In JSP programmin