Mockito and java8

TestMockito.java

import static org.mockito.Mockito.*;

import java.util.concurrent.*;

import org.junit.*;
import org.mockito.*;
import org.mockito.stubbing.*;

public class TestMockito {
	@Test
	public void should_use_java_8() {
		Executor executor = mock(Executor.class);

		doExecute((arg) -> ((Runnable) arg).run()).when(executor).execute(any(Runnable.class));
	}

	private static Stubber doExecute(InvocationWithOneArg invocationWithOneArg) {
		return Mockito.doAnswer((invocation) -> {
			invocationWithOneArg.invoke(invocation.getArguments()[0]);
			return null;
		});
	}

	private static Stubber doExecute(InvocationWithTwoArgs invocationWithTwoArgs) {
		return Mockito.doAnswer((invocation) -> {
			invocationWithTwoArgs.invoke(invocation.getArguments()[0], invocation.getArguments()[1]);
			return null;
		});
	}

	public static interface InvocationWithOneArg {
		void invoke(Object arg1);
	}

	public static interface InvocationWithTwoArgs {
		void invoke(Object arg1, Object arg2);
	}
}

nice java 8 sample, thanks