Groups > comp.lang.java.programmer > #36708

Re: Lambda function that takes no parameter and returns String

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From	Arne Vajhøj <arne@vajhoej.dk>
Newsgroups	comp.lang.java.programmer
Subject	Re: Lambda function that takes no parameter and returns String
Date	Fri, 23 Jun 2017 22:15:17 -0400
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On 6/23/2017 9:56 PM, Cecil Westerhof wrote:
> I want to start with lambda functions. How would I write a lambda
> function that does not take a parameter and returns a String? And how
> do I ascribe that lambda function to a variable?

Example:

public class LambdaFun {
	@FunctionalInterface
	public static interface F {
		public String get();
	}
	public static void test(F f) {
		System.out.println(f.get());
	}
	public static void main(String[] args) {
		test(() -> "one");
		test(() -> "two");
		test(() -> "three");
		F four = () -> "four";
		test(four);
	}
}

Arne

Thread

Lambda function that takes no parameter and returns String Cecil Westerhof <Cecil@decebal.nl> - 2017-06-24 03:56 +0200
  Re: Lambda function that takes no parameter and returns String Arne Vajhøj <arne@vajhoej.dk> - 2017-06-23 22:15 -0400
    Re: Lambda function that takes no parameter and returns String Arne Vajhøj <arne@vajhoej.dk> - 2017-06-23 22:18 -0400

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