.indexOf selective replacements

I have a StringBuffer named "sentence." I need to replace all occurrences of "A", except occurrences of "A" at the end of a word, with "E".

Example: ABABA ---> EBEBA

However, my code returns EBEBE.

Code :

---

while (sentence.indexOf("A") >= 0 && sentence.indexOf("A") != sentence.indexOf("A ") && sentence.indexOf("A") != sentence.indexOf("A."))
		{
			int AStart = sentence.indexOf("A");
			int AEnd = AStart + "A".length();
			sentence.replace(AStart, AEnd, "E");
 
		}

---

Is the problem that the code replaces the last "A" with an "E"?

Add an if test to see where the location is and don't replace if it is at the end.

Well, why not just check if sentence.indexOf("A")==sentence.length()-1?

That statement says: if the index of A is the last index

The reason it says that is because sentence.length() returns the length of the StringBuffer, while sentence.length()-1 returns the last index of the StringBuffer.