java.lang.StringIndexOutOfBoundsException in main class when I try to convert upper case to lower case in java

Question

I am trying to convert upper case letters to lower case and I get the following error:

 animalException in thread "main" java.lang.StringIndexOutOfBoundsException: String    index out of range: 6
    at java.lang.String.charAt(Unknown Source)
    at newproject.chars.main(chars.java:11)

Here is my code:

public class chars {
    public static void main(String[] args) { 

          String a = "AnImAl";
          for(int b=0;b<=a.length();b++) {
          char c= a.charAt(b);
          if(c>=65 && c<=90)
          {
             c=(char)((c + 32));
          }
          System.out.print(c);
    }
    }
}

Could somebody explain to me why I get this error? Thanks in advance

`for(int b=0;b<=a.length();b++)` should simply be `for(int b=0;b — Lutzi, Apr 23 '18 at 16:15
https://stackoverflow.com/questions/28464346/java-exception-in-thread-main-java-lang-stringindexoutofboundsexception-str?rq=1 — rgettman, Apr 23 '18 at 16:20

score 0 · Answer 1 · answered Apr 23 '18 at 16:18

0

An index out of bounds error from a for loop is a quick indicator that the for loop iterates through too many nodes! Change your for loop to look like int b=0;b<a.length();b++

answered Apr 23 '18 at 16:18

devops_engineer

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java.lang.StringIndexOutOfBoundsException in main class when I try to convert upper case to lower case in java

1 Answers1