@Override
public void describeTo(Description description) {
description.appendText("a Complex number having ");
reMatcher.describeTo(description);
description.appendText(" as real part and ");
imMatcher.describeTo(description);
description.appendText(" as imaginary part");
}
@Override
public boolean matchesSafely(Complex complex) {
return reMatcher.matches(complex.re) && imMatcher.matches(complex.im);
}