why from index is inclusive but end index is exclusive?

Question

In Java API methods like:

• String.substring(int beginIndex, int endIndex)
• String.subSequence(int beginIndex, int endIndex)

Answer 1

In addition to what Bohemian said:

If it were exclusive, to get the first 4 characters in a String, you'd have to:

String firstFour = String.substring(0, 3);

That's rather ugly.