Ptt 大爆卦 | java string + - 前往 https://stackoverflow.com/questions/15253406/get-the-last-three-chars-from-any-string-java

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並前往https://stackoverflow.com/questions/15253406/get-the-last-three-chars-from-any-string-java

Get the last three chars from any string - Java

Why not just String substr = word.substring(word.length() - 3) ? Update. Please make sure you check that the String is at least 3 characters ...

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