What is lambda expression in java interview questions?

Let's Build a Community of Programmers.
****************************************************************************************
Java Lambda Expressions
Lambda expression is a new and important feature of Java that was included in Java SE 8. It provides a clear and concise way to represent one method interface using an expression. It is very useful in the collection library. It helps to iterate, filter, and extract data from the collection.

The Lambda expression is used to provide the implementation of an interface that has a functional interface. It saves a lot of code. In the case of the lambda expression, we don't need to define the method again for providing the implementation. Here, we just write the implementation code.

Java lambda expression is treated as a function, so the compiler does not create .class file.
****************************************************************************************