java 8 certification questions

solve the problem of efficiency, the replication algorithm divides the available memory into two equal parts by capacity, then one at a time, when a piece of memory is used up, the surviving object is copied to the second block of memory, then the first block of memory is once clear, and then the object on the second block is copied to the first block. But this way, the cost of memory is too high, each time basically waste the general memory.Then the algorithm was improved, the memory area is n

Regular Interview Questions and answers by a ribaba Java engineer, Baba java 1. Implementation of Spring AOP and IOC Http://blog.csdn.net/tarena_lixy/article/details/7096114 Http://blog.csdn.net/kiss_vicente/article/details/6901295 Http://blog.csdn.net/it_man/article/details/4402245 2. Distributed message queue and distributed cache Message Queue: RabbitMQ, Kafka

the Java threading model. The start () method is used to start the newly created thread, and start () calls the run () method internally, which is not the same as calling the run () method directly. When you call the run () method, only the original thread is called, no new thread is started, and the start () method starts the new thread. For more discussion please click here7) What is the difference between runnable and callable in

Core Java Questions and Answers (1-33), answers1-33Preface Http://www.journaldev.com/2366/core-java-interview-questions-and-answers.What are the important features of Java 8? Java

("Too big, a little bit smaller");}else{System.out.println ("Congratulations on your guess right");Break}System.out.println ("remaining" + (10-A) + "Second Chance");}while (true);}}　　4. use a double loop to print all the primes between the 2~200. public class Text {public static void Main (string[] args) {for (int i = 2; i Boolean A = true;for (int j = 3; J if (i%j==0) {A = false;Break}}if (a) {System.out.println (i);}}}} An int array is known to arr = {12,4,22,11,24,9}, finding the ma

Java basic set classic Training Questions, java basic set classic Question 1: 10 random strings are required, each string is not repeated, and the characters (a-zA-Z0-9) in each string are also different, each string is 10; Analysis: * 1. When you see this question, you may think of many methods in your mind, such as determining whether the generated string conta

50 Java Thread Surface questionsHere are some popular interview questions about Java threading, which you can use to prepare for the interview.1) What is a thread?A thread is the smallest unit that the operating system can perform operations on, which is included in the process and is the actual operating unit of the process. Programmers can use it for multiproce

Transferred from: http://www.importnew.com/10980.htmlIn this article we are going to discuss the different types of face questions in a Java interview, which allow employers to test the candidate's Java and common object-oriented programming capabilities. The following sections are divided into two chapters, the first of which will discuss object-oriented program

In this article we are going to discuss the different types of face questions in a Java interview, which allow employers to test the candidate's Java and common object-oriented programming capabilities. The following sections are divided into two chapters, the first of which will discuss object-oriented programming and its features, common

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 multithreading Basics to meet the future problems. (Proofing Note

interview will ask the following questions. How to solve the producer-consumer problem in Java, of course there are a lot of solutions, I have shared a blocking queue implementation method. Sometimes they even ask how to make the Philosopher's meal a problem.6) How will you solve a program that will lead to deadlocks in Java?This is my favorite