如何在 Java 字串中計算字元數?
宣告一個整數,將其初始化為 0,在 for 迴圈中為每個字元將其自增。
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
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