Float is single precision floating point decimal number while Double is double precision decimal number. Java is used by approx 10 Million developers worldwide to develop applications for 15 Billion devices supporting Java. What's the purpose of Static methods and static variables? /A << Ans: Break is used after each case (except the last one) in a switch so that code breaks after the valid case and doesn't flow in the proceeding cases too. In this list of Basic Java interview questions, we have covered all commonly asked basic and advanced Core Java interview questions with detailed answers to help you clear the job interview. Java Output Program MCQ Questions and Answers: Here learn quiz questions for Java Output Program, this section contain most important objective questions for Competitive Exam like Gate exam. 10 List out the types of operators used in Java. /F8 8 0 R If an application has multiple classes in it, is it okay to have a main method in more than one class? Depending upon the parameters, appropriate one will be called: Q48. What will be the output of Round(3.7) and Ceil(3.7)? In this Java Interview Questions blog, I am going to list some of the most important Java Interview Questions and Answers which will set you apart in the interview process. Ans: The best way to persist data for future use is to use the concept of serialization. Q52. What is the difference between double and float variables in Java? Introduction To Java; Java Network Programming; Java File Input Output 14 0 obj If you put any number of successive spaces within the quotes, you get that number of spaces in the output. Top 10 Java Files Interview Questions and Answers. 4 0 obj >> For loops are used when number of times to execute the statements is known to programmer. Ans: In java, main() method can't return any data and hence, it's always declared with a void return type. Java 8 - MCQ set 1 (25 questions, 55 marks) Java 8 - MCQ set 2 (25 questions, 55 marks) Note : Each set consists of 25 questions Set 1 consists of 5 EASY level difficulty questions 1 mark each. Ans: In Java, if we define a new class inside a particular block, it's called a local class. Ans: In Java, there are no destructors defined in the class as there is no need to do so. Input Output Java Programming Questions and Answers with explanation for placement, interview preparations, entrance test. Ans: If we want certain variables of a class not to be serialized, we can use the keyword transient while declaring them. Q92. Q5. Simply reassigning to the parameter used to pass the value into the method will do nothing, because the parameter is essentially a local variable. Q36. Ans: In the above example, two objects of Java.Lang.String class are created. %PDF-1.4 Q63. Q26. What's the significance of packages? Q19. Q100. In case of native method based development, we define public static methods in our Java class without its implementation and then implementation is done in another language like C separately. Does Importing a package imports its sub-packages as well in Java? Core Java Multiple Choice Questions Here Coding compiler sharing a list of 40 Java Objective Questions and Answers for freshers and experienced Java developers.We hope that these Java MCQ Questions will help you to crack your next Java interview.All the best for your future and happy Java learning. By using Java.Lang.Runnable Interface. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. Q55. Q34. Ans: Private members of a class aren't accessible outside the scope of that class and any other class even in the same package can't access them. You will get solution and explanation of each question. Questions and answers - MCQ with explanation on Computer Science subjects like System Architecture, Introduction to Management, Math For Computer Science, DBMS, C Programming, System Analysis and Design, Data Structure and Algorithm Analysis, OOP and Java, Client Server Application Development, Data Communication and Computer Networks, OS, MIS, Software Engineering, AI, Web Technology and â¦ Ans: No, Java class main method can have only void return type for the program to get successfully executed. If main method is declared as private, developer won't get any compilation error however, it will not get executed and will give a runtime error. Ans: Multi threaded applications can be developed in Java by using any of the following two methodologies: 1. << After creation of this string object, all built-in methods of String class can be used on the string object.