Must-Know Stream             API Concepts for              Java 8 Interviews

10

In Java 8, a functional interface is one with a single abstract method, often used in conjunction with lambda expressions to enable functional programming.

1

Functional interface

Looking for Java 8 Interview Questions  to prepare for?

Default methods

2

Introduced in Java 8, default methods in interfaces enable addition of new methods without breaking existing implementations, promoting backward compatibility.

Looking for Java 8 Interview Questions  to prepare for?

Lambda expressions

3

Java 8's lambda expressions provide a concise way to create anonymous functions, especially useful when working with functional interfaces.

Looking for Java 8 Interview Questions  to prepare for?

Method references

4

Method references in Java 8 allow you to refer to methods using their names, improving code readability and conciseness.

Looking for Java 8 Interview Questions  to prepare for?

Concatenate two streams

5

The concat() method in Java 8 is used to combine or concatenate two streams, providing a way to merge their elements.

Looking for Java 8 Interview Questions  to prepare for?

Lambdas & functional programming

6

The introduction of lambdas supports functional programming, a paradigm centered around functions & immutable data, promoting concise & expressive code.

Looking for Java 8 Interview Questions  to prepare for?

Static methods

7

Java 8 allows the inclusion of static methods in interfaces, providing utility methods that are not tied to any specific object instance.

Looking for Java 8 Interview Questions  to prepare for?

Stream filter

8

The filter() method in the Stream API enables the selection of elements based on a specified predicate, allowing for streamlined data processing.

Looking for Java 8 Interview Questions  to prepare for?

Exception handling

9

Java 8 introduced the try-with-resources statement, extending its use to handle exceptions gracefully within stream operations.

Looking for Java 8 Interview Questions  to prepare for?

Reduce

10

The reduce() method in the Stream API allows the reduction of a stream to a single value, providing a powerful tool for aggregating data efficiently.

Looking for Java 8 Interview Questions  to prepare for?

Ready to  Take the Next Step in your Career?

This comprehensive guide will help you prepare for all aspects of the interview process.  Don't miss out on your next opportunity!

Improve your Interviewing Skills with Scaler!

Ready to level up your data science skills? Join Scaler to become a master of data science and machine learning.  Book a FREE LIVE CLASS now.