Question: What is CharSequence.isEmpty() in Java 15?Answer:Also new is the default method isEmpty() in the CharSequence interface. The method simply checks whether the character sequence's length is 0: This method is thus automatically available in the Segment, StringBuffer, and StringBuilder classes. String and CharBuffer, which also implement CharSequence, each have their optimized implementation of isEmpty(). With String, for example, the call to length() is unnecessarily expensive because, since Java 9 (JEP 254 "Compact Strings"), the string's encoding must also be taken into account when calculating its length. |
Сохранить для повторения
Добавьте этот элемент в закладки, отметьте как сложный или поместите в набор для повторения.
Войдите, чтобы сохранять закладки, сложные вопросы и наборы для повторения.
Самое полезное по оценкам пользователей:
- What is Java 15?
- What is Text Blocks or Multi-line string in Java 15?
- What are New String and CharSequence Methods in Java 15?
- What is CharSequence.isEmpty() in Java 15?
- Provide the release notes of Java 15.