In the following code, we solved the previous problem using low coupling. Now theReportServiceclass only expects anIReportWriterimplementation, and that class would be responsible for generating the report. We can inject as many supported report types, without touching any of the other classes. pub...
Most of the companies has tie up with different resource firm where they hire the resource on contract basis first and then make full time employment offer for them OR companies now a days also started giving more preferences to certified resources by default , it gives them the confidence that...
These questions for Java interviews are prepared by the subject experts and can be practiced by the students and developers to practice, learn, and get selected by the top IT companies.We have categorized these questions into 3 sections. Let's practice the interview questions and answers on ...
This core Java question is followup of previous question and expecting candidate to write Java singleton using double checked locking. Remember to use volatile variable to make Singleton thread-safe. check 10 Interview questions on Singleton Pattern in Java for more details and questions answers 12....
- Best practice for user defined key class is to make it immutable, so that hashCode() value can be cached for fast performance. Also immutable classes make sure that hashCode() and equals() will not change in future that will solve any issue with mutability. For example, let's say I ...
JPA (Java Persistence API) MCQs: This section contains multiple-choice questions and answers on the various topics of JPA (Java Persistence API). Practice these MCQs to test and enhance your skills on JPA (Java Persistence API). List of JPA (Java Persistence API) MCQs ...
Get Ready for your Java Interview with 200+ Java Interview Questions for Beginners 评分:4.6,满分 5 分4.6(8720 个评分) 63,063 个学生 创建者in28Minutes Official 上次更新时间:12/2024 英语 英语[自动], 土耳其语 [自动], 您将会学到 You will be able to Answer questions on Java Platform, Wrapp...
Java Collections Framework are the fundamental aspect of java programming language. It’s one of the important topic for java interview questions. Here I
Exceptions are an essential topic that every Java developer should be familiar with. This article provides answers to some of the questions that might pop up during an interview. 2. Questions Q1. What Is an Exception? An exception is an abnormal event that occurs during the execution of a pr...
privatestaticbooleanisPalindromeString(Stringstr){if(str==null)returnfalse;intlength=str.length();System.out.println(length/2);for(inti=0;i<length/2;i++){if(str.charAt(i)!=str.charAt(length-i-1))returnfalse;}returntrue;} Copy