@Test public void isNotEmptyWithEmptyString() { assertFalse(isNotEmpty().isValid("")); }
public static IValidator<String> isNotEmpty() { return value -> value != null && !value.isBlank(); }
Validators { public static IValidator<String> isNotEmpty() { return value -> value != null && !value.isBlank(); } }
Validators { public static IValidator<String> isNotEmpty() { return value -> value != null && !value.isBlank(); }  }
Validators { public static IValidator<String> isNotEmpty() { return value -> value != null && !value.isBlank(); }  static IValidator<String> isNotEmpty(); static IValidator<String> isInteger(); static IValidator<String> isIntegerOrBlank(); static IValidator<String> isDouble(); }
Validators { public static IValidator<String> isNotEmpty() { return value -> value != null && !value.isBlank(); }  static IValidator<String> isNotEmpty(); static IValidator<String> isInteger(); static IValidator<String> isIntegerOrBlank(); static IValidator<String> isDouble();  }