莊庭寬Java內建方法length(),charAt()
/*整合開發環境IDE,Integrated Development Enviroment*/ public class Main {/*莊庭寬w3schools內建方法length,charAt*/ public static void main(String[] args) { String a = "中華民國萬歲,萬萬歲";/**/ String b = ""; /*字串b初始值是空的*/ int c = a.length(); /*方法 length() 得到字串長度*/ System.out.println("原來字串: " + a); System.out.println("字串長度: " + c); for (int i = 0; i 昨夜西風凋碧樹,獨上西樓望進天涯路 17 =LEN($A$1) Java length=EXCEL LE Java charAt=EXCEL MID 第幾個字 3 凋 4 碧 5 樹
