Java Interview Questions for Freshers and Experienced - Set 1

Veröffentlicht am: 08 Juli 2024
auf dem Kanal: Dilip IT Academy

669

1. What is Call By Value and What is Call By Reference?

2. Exception Handling with Method Overriding.

What is te contract between Super class and Sub Class overiden Methods.

Case 1: If SuperClass method doesn’t declare any exception and then which type of Exceptions declared at Sub Class method level.

Case 2: If SuperClass method declare any type of exception and then which type of Exceptions declared at Sub Class method level.

3. what needs to be done if we want to use custom object as key in HashMap?

4. What is the difference between intermediate and terminal operations on Stream?

5. Difference Between map() And flatMap() In Java Stream API?

6. why String is immutable in Java, reason behind it?

7. HashSet internal implementation

8. Write a program for finding only duplicate characters in Given String.

9. what is try-with-resources and an example.

10. Why Array index started from 0 , why not from 1 in Java?

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