package com.puppycrawl.tools.checkstyle.grammars.java8; import java.util.logging.Logger; public class InputLambda2 { private static final Logger LOG = Logger.getLogger(InputLambda2.class.getName()); public static void testVoidLambda(TestOfVoidLambdas test) { LOG.info("Method called"); test.doSmth(); } public static void main(String[] args) { testVoidLambda(() -> LOG.info("Method in interface called")); } private interface TestOfVoidLambdas { public void doSmth(); } }