Java - String類別

String 類別有以下幾種：

1. Length()


2. concat() - 連接 string 字串


3. static format()


4. split()


5. substring()


6. subSequence()


7. trim()


8. indexOf()


9. lastIndexOf()


10. contains()


11. replace()


12. replaceAll()


13. replaceFirst()


14. endsWith()


15. startsWith()


16. compareTo()


17. compareToIgnoreCase()


18. equals()


19. equalsIgnoreCase()


20. regionMatches()


21. toLowerCase()


22. toUpperCAse()