Core java - Interview Questions and Answers for 'Nucleus' - 3 question(s) found - Order By Newest Frequently asked these days as there are major changes in Java 8. Q1. What are new features introduced with Java 8 ? Core Java
Ans. Lambda Expressions , Interface Default and Static Methods , Method Reference , Parameters Name , Optional , Streams, Concurrency. Sample Code for Lambda Sample Code for interface default Sample Code for Optional Sample Code for Streams Sample Code for java.time Sample Code for Predicate Sample Code for Consumer Sample Code for MapMerge Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve Asked in 14 Companies expert frequent Related Questions Difference between final and effectively final ? Why is effectively final even required ? What is StringJoiner ? Why can't we have diamond problem with interfaces ? What is the use of Optional ? Name few "Optional" classes introduced with Java 8 ? What was the driving force to introduce default methods in Interfaces wef from Java 8 ? Is it ok to use optional everywhere just to get over nullpointerexception ? What is concurrent interface ? What is the @FunctionalInterface annotation ? Frequently asked in face to face interviews. Q2. Write a program to print fibonacci series. Core Java
Ans. int count = 15; Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve Asked in 66 Companies basic frequent Related Questions What are the steps to be performed while coding Junit with Mocking framework ? What is a Sequence File? What different level of logging you use while coding ? Have you ever encoded the response before sending it back from the service? If Yes , Which encoding was used ? What are the different type of encoding you have used ? How does encoding affect using Reader / writer classes or Stream classes in Java ? What is the difference between html encoding and url encoding ? Does spaces get's encoded in html encoding ? Q3. What is a class and object ? Core Java
Ans. Class is a template using which objects are created in memory. It's kind of a mold using which objects with body / state are made. Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve Asked in 4 Companies basic frequent Related Questions Difference between == and .equals() ? Why is String immutable in Java ? Explain the scenerios to choose between String , StringBuilder and StringBuffer ? Why Char array is preferred over String for storing password? What are different ways to create String Object? Explain. Why do we need Inner classes ? Cant we just work with outer classes wherever we implement Inner classes ? What are different ways of object creation in Java ? Differences between abstract class and interface ? What is a String Pool ? What are different types of classes ?
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Frequently asked these days as there are major changes in Java 8.
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