# Top Java 8 Features

By [Amrit](https://paragraph.com/@argha-2) · 2022-11-19

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1.  Default methods are declared using the new **_default_ keyword.** These are accessible through the instance of the implementing class and can be overridden.
    
2.  Java 8 introduces an annotation known as @FunctionalInterface that is usually for compiler-level errors. It is typically used when the interface you are using violates the contracts of the functional interface.
    
    Alternatively, you can call a functional interface a SAM interface or a Single Abstract Method interface. A functional interface allows exactly one “abstract method” as its member.
    
3.  Lambda Expressions were added in Java 8.
    
    A lambda expression is a short block of code that takes in parameters and returns a value. Lambda expressions are similar to methods, but they do not need a name and they can be implemented right in the body of a method.

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*Originally published on [Amrit](https://paragraph.com/@argha-2/top-java-8-features)*