Strings and characters

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Strings are made up of characters, or what Java calls chars. A string's characters are numbered from left to right, starting with 0.

String s = "My phone";
            01234567

In the string "My phone", the M is at index 0, the y at index 1, the at index 2, the p at index 3, etc:

Character M y p h o n e
Index 0 1 2 3 4 5 6 7

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