如何計算 Java 字串中的字元數?
宣告一個整數,用 0 初始化,然後在 for 迴圈中為每個字元遞增該整數。
示例
public class Sample { public static void main(String args[]) { String str = new String("Hi welcome to Tutorialspoint"); int count = 0; for(int i = 0; i<str.length(); i++) { count++; } System.out.println("Number characters in the given string (including spaces) "+count); } }
輸出
Number characters in the given string (including spaces) 28
廣告