What is the Supplier functional interface in Java?
Supplier is a functional interface that produces results without accepting any inputs. The results produced each time can be the same or different. The interface contains one method, get.
The Supplier interface is defined in the java.util.function package. To import the Supplier interface, check the following import statement.
import java.util.function.Supplier;
get()
This method returns a result every time it’s invoked. This is the functional method of the interface.
Syntax
T get()
Parameters
The method has no parameters.
Returns
The method returns the result generated.
Code
import java.util.Random;import java.util.function.*;public class Main{public static void main(String[] args) {// Supplier interface implementation that generates random integer valueSupplier<Integer> randomSupplier = () -> new Random().nextInt();int count = 5;// Calling get method to get the random valuewhile(count-- > 0) System.out.println(randomSupplier.get());}}
In the above code, we implement the Supplier interface that generates a random integer value every time the method get() is invoked. The get() method is called five times to produce five random integer values using the while loop.
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