以下實例示範了透過繼承Exception 來實現自訂異常:
/* author by w3cschool.cc TestInput.java */ class WrongInputException extends Exception { WrongInputException(String s) { super(s); } } class Input { void method() throws WrongInputException { throw new WrongInputException("Wrong input"); } } class TestInput { public static void main(String[] args){ try { new Input().method(); } catch(WrongInputException wie) { System.out.println(wie.getMessage()); } } }
以上程式碼運行輸出結果為:
Wrong input
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