[Solved] ava.lang.StringIndexOutOfBoundsException: String index out of range: 9 at java.lang.String.charAt(String.java:658)

by


Change 

for(x = 0; x < num +1; x++)

to 

for(x = 0; x < num; x++)

Also you might have meant 

for(boolean guessed = false; guessed == true;) // notice == instead

and then setting this flag to true within this(outer) for loop.

solved ava.lang.StringIndexOutOfBoundsException: String index out of range: 9 at java.lang.String.charAt(String.java:658)