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java自定義異常類之用戶登錄,幫助大家更好的理解之定義異常。

代碼片段和文件信息
package?Task5;
public?class?NoSuchUserException?extends?Exception?{
public?NoSuchUserException()
{
super(“用戶名不存在“);
}
}
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-03-16?22:41??AccountNumber\
?????文件?????????301??2018-03-16?22:41??AccountNumber\.classpath
?????文件?????????389??2018-03-16?22:41??AccountNumber\.project
?????目錄???????????0??2018-03-16?22:41??AccountNumber\.settings\
?????文件?????????598??2018-03-16?22:41??AccountNumber\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2018-03-16?22:41??AccountNumber\bin\
?????目錄???????????0??2018-03-16?22:41??AccountNumber\bin\Task5\
?????文件?????????351??2018-03-16?22:41??AccountNumber\bin\Task5\NoSuchUserException.class
?????文件?????????372??2018-03-16?22:41??AccountNumber\bin\Task5\PasswordDontMatchException.class
?????文件????????1720??2018-03-16?22:41??AccountNumber\bin\Task5\TestUser.class
?????文件?????????767??2018-03-16?22:41??AccountNumber\bin\Task5\User.class
?????目錄???????????0??2018-03-16?22:41??AccountNumber\src\
?????目錄???????????0??2018-03-16?22:41??AccountNumber\src\Task5\
?????文件?????????142??2018-03-14?17:52??AccountNumber\src\Task5\NoSuchUserException.java
?????文件?????????158??2018-03-14?17:52??AccountNumber\src\Task5\PasswordDontMatchException.java
?????文件?????????795??2018-03-16?15:26??AccountNumber\src\Task5\TestUser.java
?????文件?????????448??2018-03-14?22:03??AccountNumber\src\Task5\User.java
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