异常字符串索引超出范围

Question

i have this error in my java program, any help !!

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)

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here is the code

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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");

can you help me in this ??

Answer 1

Change

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

to

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

If you do <= It will iterate in inputString.length() index, char which not exists.

Answer 2

'i' value can't be equal to inputString's length . So , change

i <= inputString.length()   

to

i < inputString.length()

in loop.