gistfile1.java

 @Test
    public void shouldSerializeLambda() throws Exception {
        ByteArrayOutputStream outBytes = new ByteArrayOutputStream(10);
        ObjectOutputStream out = new ObjectOutputStream(outBytes);
        final SerializedPredicate predicate = e -> true;
        out.writeObject(predicate);

        ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(outBytes.toByteArray()));
        Predicate p = (Predicate) in.readObject();
        assertTrue(p.test(null));
    }

    public interface SerializedPredicate<T> extends Predicate<T>, Serializable {
    }