java multithreading programming interview questions

word key that needs to be counted, then take advantage of Java's own indexof () Find the first occurrence of the word position,//statistics plus 1, and the previous statistics of the string truncated, in the remaining fields to match. int times = 0;while (true) {int index = Str.indexof (key), if (Index! =-1) {times++;str = str.substring (index + key.length ( ));} Else{return Times;}}}Operation Result:Source Code 3:Package Com.yue.day11;import Java.util.scanner;public class Yanghuitri {/** * Pri

); System.out.println ("Please enter the lower limit of the number:"); int low = Scanner.nextint (); System.out.println ("Please enter a number cap:"); int high = Scanner.nextint (); if (Low>high) {System.out.println ("you entered the wrong data, please re-enter!") "); System.out.println ("Please enter the lower limit of the number:"); low = Scanner.nextint (); System.out.println ("Please enter a number cap:"); high = Scanner.nextint ();} SYSTEM.OUT.PRINTLN (all primes between low+ "-" +high+ ")

Topic: Java Multithreading _ Programming model ResearchAuthor: KagulaDate: 2007-12-27 Objective: To explore a simple way of working, and realize the coding of multithreading. Reading objects: Understanding Java Common multithreaded concepts of readers. Applicable to:

Programming | Multithreading no matter how much I like Java however, from the actual development point of view, Java Multithreading does not have C + +. Table Now: 1.Java no global variable; 2.

example:What exactly is boxing and unpacking, boxing is that the compiler performs a boxing operation after the underlying type is changed to the corresponding object type, and the reverse is the case. The following blog is a special introduction to Java Boxing and unpacking to share with youHttp://www.cnblogs.com/dolphin0520/p/3780005.html= = and equals I used almost every day, before this I did not care too much about the differences, and later loo

) {Integer a = Integer.parseint (num);Long sum = 0;Long subsum = 0;for (int i=1;iSubsum = Subsum*10+a;sum = sum+subsum;}return sum;}}Operation Result:3. Procedure 3Package Tong.yue.hong;Import Java.util.Scanner;/** Title: If a number is exactly equal to the sum of its factors, this number is called the "end number", that is, the non-repetition factor other than itself and equal to itself. Programming to find all the finished numbers within M.* For exa

coalition, which is China Unicom saw Java in the mobile phone market and Java's proprietary openness and standards. Java welcomes competition because it is the only way to maximize the technology in the field. 　 Q:In the recent years of development, many programming languages have faded away, while the Java language

java.util.scanner;/* * Title: Decomposition of a positive integer factorization. For example: Enter 90 and print out 90=2*3*3*5. Program Analysis: The decomposition of n factorization, should first find a minimum prime number k, and then the following steps to complete: (1) If the prime number is exactly equal to N, then the decomposition of the factorization process has ended, printing can be. (2) if nOperation Result:2. Procedure 2Package Tong.yue.hong;import java.util.scanner;/** * Title: Us

, and the duplicate char is stored in ArrayList. We use the Collections.sort () function to sort the characters in the ArrayList, so the same characters must be contiguous. It then loops through the elements in the TreeSet collection, looking for the first and last occurrence of the element in ArrayList, the number of occurrences = The last occurrence-the number of occurrences of the first occurrence of +1.Second, the source codeProgram 1:Operation Result:Program 2:Operation Result:Program 3: O

hundreds, 10 digits, single digit numbers are 1, 2, 3, 4. But must satisfy each one on the number is different, according to the permutation combination principle altogether has the 4*3*2=24 species. * @author Tong * */public class Pailiezuhe {public static void main (string[] args) {int count = 0;for (int i = 1; I Operation Result:3. Procedure 3Package Tong.yue.hong;import java.util.scanner;/** * The bonus awarded by the Enterprise is based on the profit commission. * Profit (I) less than or e

JAVA programming (17) ----- prepare file copy software process input stream output stream NIO progress bar bottom copy Multithreading Using NIO to copy files at the underlying layer (byte) multi-threading technology elementary applications run programs without blocking Package com. lovo. homework01; import java. awt.

Java Multithreading programming attention problems Multi-threaded concept ask Niang, most of them are stereotyped. Programmers who are not very rich in programming experience are more difficult to digest. The author analyzes the problems that should be paid attention to in Java