I don't know what's wrong with my java code or what the error message means

Question

The program is supposed to print out the password is valid if it's 8 or more characters and those characters must be letters or numbers and return false if it's less then 8 or has any special characters

Answer 1

Zoe

https://code.sololearn.com/cpJ8netHs6Jk/?ref=app

Answer 2

Thinking you have not used the variable which you defined as character.

Answer 3

I think you copied it from a website or somewhere where whitespace is used... Try typing code by yourself and this error will be removed...

Answer 4

Plz post your code here too... It will help us in helping you..

Answer 5

https://code.sololearn.com/cj5Y6Gsov473/?ref=app

Sorry I meant to do that

Answer 6

Okay I'll try that

Answer 7

https://code.sololearn.com/cj5Y6Gsov473/?ref=app

It loads now, but doesn't function properly

Answer 8

Zoe

You can check the length outside the loop. < 8 -> return false

Inside the loop check if indexof returns -1 -> return false

If the pw passes the loop you can return true.

public static boolean passwordCheck(String password)
{
String letters;
letters= "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";

if(password.length() < 8) return false;

for(int i =0; i<password.length();i++){
String character= password.substring(i,i+1);

if(letters.indexOf(password.charAt(i)) == -1){

return false;
}

}

return true;
}

Answer 9

"https://code.sololearn.com/cj5Y6Gsov473/?ref=app

It loads now, but doesn't function properly”

Hint: You declared the variable ‘character’, but you are not using it.

Answer 10

With Denise Roßberg code it now calls passwords with special characters invalid but doesn't recognize password with less than 8 characters as false

Answer 11

Zoe

What do you mean? The method returns false if the pw length is < 8.