java 丟失的異常

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採用finally從句中的，可能會丟失異常

package thinking;//: LostMessage.java// How an exception can be lostclass VeryImportantException extends Exception {    public String toString() {       return "A very important exception!";    }}class HoHumException extends Exception {   public String toString() {      return "A trivial exception";   }}public class LostMessage {    void f() throws VeryImportantException {       throw new VeryImportantException();    }        void dispose() throws HoHumException {throw new HoHumException();}    public static void main(String[] args) throws Exception {    LostMessage lm = new LostMessage();    try {       lm.f();    } finally {       lm.dispose();    }}} ///:~  

VeryImportantException 被finally從句中的HoHumException的異常替代了，即出錯資訊丟失了。

java 丟失的異常