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Java 9

• Optional.ifPresentOrElse

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Java 8

package org.springframework.data.util;
...
public interface Optionals {
...
	public static <T> void ifPresentOrElse(Optional<T> optional, Consumer<? super T> consumer, Runnable runnable) {

		Assert.notNull(optional, "Optional must not be null!");
		Assert.notNull(consumer, "Consumer must not be null!");
		Assert.notNull(runnable, "Runnable must not be null!");

		if (optional.isPresent()) {
			optional.ifPresent(consumer);
		} else {
			runnable.run();
		}
	}

		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-commons</artifactId>
			<version>${springdata.commons}</version>
		</dependency>