Java 8 : Supplier

What is a Supplier?

Supplier is a predefined functional interface like Consumer, present in java.util.function package. It has one abstract method called get();

Supplier can be used to supply some value based on some operation, Supplier won't take any input and it will always supply objects.

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interface Supplier<R> { public R get(); }

Supplier example 1:

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package com.blogspot.ekumeedkiasha; import java.util.function.Supplier; public class SupplierExample1{ public static void main(String[] args) { Supplier<Double> sup= () -> Math.random(); System.out.println(sup.get()); } }

Property	Predicate	Function	Consumer	Supplier
What	To take some Input and perform some conditional checks	To take some Input and perform required Operation and return the result	To consume some Input and perform required Operation. It won’t return anything.	To supply some Value base on our Requirement
Abstract method name	public boolean test (T t);	public R apply (T t);	public void accept (T t);	public R get();
Default Methods	and(), or(), negate()	andThen(), compose()	andThen()	N/A
Static Method	isEqual()	identify()	N/A	N/A

Author : Ekumeed Help

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