错误：线程“main”java.lang.StringIndexOutOfBoundsException中的异常

I have been trying to execute this program which many will find a bit useless. Nevertheless I have been getting this error:Exception in thread "main" java.lang.StringIndexOutOfBoundsException while executing.this program is to find the number of vowels,consonants,special characters etc. and I recently got this error.Please help me. What is this error and how do I remove it from my code .Thanks in advance.I have been trying to execute this program whic