李建東

w3schools Java Java程式碼 public class Main { /*22023.1.12, w3schooljava*/ public static void main(String[] args) { String a = "狗吃屎,貓抓鼠"; /*宣告字串型態a預設"自己打"*/ String b = ""; /*78""*/ System.out.println(": " + a); for (int i = 0; i