@FunctionalInterface
interface IStringLength {

	public abstract int measureStringLength(String string);

}

public class LambdaExercise {

	private IStringLength lambda = (string) -> string.length();

	public IStringLength getLambda() {
		return lambda;
	}
	public void setLambda(IStringLength lambda) {
		this.lambda = lambda;
	}

	public static void main(String[] args) {

		String s = "Hello World";
		int sLength = new LambdaExercise().getLambda().measureStringLength(s);
		System.out.println(sLength);

	}

}