java Optional - Nullable in java

In java8 there is new type Optional, which is same as Nullable in C#

Syntax

Optional<String> opt = Optional.of(...);
if (opt.isPresent()) {
	String s = opt.get();
} 
else {
	...
}

String s = opt.orElse("");

main method:

• isPresent: test if opt has value
• get: get the value from opt
• orElse: get the value or get the default

api http://docs.oracle.com/javase/8/docs/api/java/util/Optional.html