Lambda Expression | Lambda Function | Lambda Function in Java

Published: 15 November 2024
on channel: GoraiStudies

Lambda Expression | Lambda Function | Lambda Function in Java

In this video I am going to discuss about Lambda Function

1. Lambda Expressions

2. Functional Interfaces

3. Method References

4. Stream API

5. Comparable and Comparator

6. Optional Class

7. Date/Time API

8. Miscellaneous

ForEach() method
Collectors Class
IO Enhancements
Base64 Encode Decode
JDBC Enhancements
Type and Repeating Annotations
Nashorn JavaScript Engine
Parallel Array Sorting
Default methods
Static methods in interface

Most of these java features are being used to concise the code.
Concise the code means very less code.

Lambda expression came in Java language little late, before java other languages like
C, C++, C#, Python, Ruby, Scala already implemented the Lambda expression.

Lambda expression is an anonymous function.
Without name
Without return type
Without modifier

Advantage:
1. Conciseness and Readability.
2. Code Re-usability .
3. Improved Debugging Experience.
4. Multi-threading.
5. Enhanced Productivity.
6. Integration with Libraries and APIs very effectively.
7. Compatibility with Functional Programming Paradigms.
8. Improved Code Organization.

Lambda expression concept is very easy.

how you can convey it is the lambda expression, for that we need to use one special symbol.

here the body contains one line, so if the body contains only one line then the curly braces are optional. We can remove the curly braces.

How to call a lambda expression that we will see later, now just see how to write lambda expression.

Some time compiler can guess the type automatically based on the operation.

return keyword can only used inside curly braces, but if we remove the curly braces then we can remove the return key word;

If the number of parameter is one then brackets are optional.

To invoke lambda expression Functional interface is required.

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