JAVA EXAMPLE PROGRAMS

Java 8 Method References

Java 8 introduced a new feature called "Method Reference". It is used to refer methods of functional interfaces. They are effectively a subset of lambda expressions, because if a lambda expression can be used, then it might be possible to use a method reference, but not always.

Here is the list of types of Method references and its syntax.

Kind	Syntax	Example
Reference to a static method	Class::staticMethodName	String::valueOf
Reference to an instance method	object::instanceMethodName	x::toString
Reference to a constructor	ClassName::new	String::new

And here is the way to represent Lambda expression and Method references:

Kind	As Method Reference	As Lambda
Reference to a static method	String::valueOf	(s) -> String.valueOf(s)
Reference to an instance method	x::toString	() -> "java2novice".toString()
Reference to a constructor	String::new	() -> new String()

We have given examples for each type of method reference here:

Java-8 Method References Examples

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I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.