异常字符串索引超出范围

Question

我的java程序中有这个错误，任何帮助!!

Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 19
    at java.lang.String.charAt(Unknown Source)
    at Password_Constrainer.main(Password_Constrainer.java:31)

---

这是代码

---

public static void main(String[] args) {
        // TODO Auto-generated method stub

    Scanner input = new Scanner(System.in);
    System.out.print("Please Enter Your Password: ");
    String inputString = input.nextLine();
    System.out.println(inputString);

    if (inputString.length() < 10) // less than 10 characters
    {
        System.out.println("Validation failed, word was too short");
    } else // Contain a letter in upper case
    {
        int sum1 = 0;
        for (int i = 0; i <= inputString.length(); i++) {
            if (Character.isUpperCase(inputString.charAt(i)))
                sum1++;
        }
        if (sum1 == 0)
            System.out.println("Validation failed, word has no Capital Letters");

你可以帮助我吗？

Answer 1

更改

for (int i = 0; i <= inputString.length(); i++) 

到

for (int i = 0; i < inputString.length(); i++) 

如果你<=它会迭代inputString.length()索引，不存在的字符。

Answer 2

＆＃39;我＆＃39; value不能等于inputString的长度。所以，改变

i <= inputString.length()   

到

i < inputString.length()

循环。