StreamGenerate.java

package com.uk.streamapi.stream;

import java.util.function.Consumer;
import java.util.function.Supplier;
import java.util.stream.Stream;

public class StreamGenerate {

	static void main() {

//		@FunctionalInterface 
//		public interface Supplier<T> { T get(); } is a functional interface with one abstract method which is get() which returns the T type of results

		Supplier<String> supplierAnonymousClass = new Supplier<String>() {

			@Override
			public String get() {
				return "hello stream!!";
			}
		};
		Supplier<String> supplierLambda = () -> "hello stream!!";

//		Both supplierAnonymousClass and supplierLambda exhibit same behaviour

//		Stream.generate(Supplier s) static method returns an infinite sequential unordered stream where each element is generated by the supplier
//		In this case generate() is working as a DataSource
		Stream<String> streamOfStrings = Stream.generate(supplierLambda);

//		@FunctionalInterface
//		public interface Consumer<T> { void accept(T t); } is a functional interface with one abstract method which accept(T t) and a default method addThen

		Consumer<String> consumerAnonymousClass = new Consumer<String>() {
			@Override
			public void accept(String s) {
				System.out.println(s);
			}
		};
		Consumer<String> cosumerLambda = (s) -> System.out.println(s);
//		Both consumerAnonymousClass and cosumerLambda exhibit same behaviour

//		forEach(consumer) method is a terminal operation which consumes the stream and calls the accept() method of consumer
		streamOfStrings.limit(5).forEach(cosumerLambda);
	}
}