Java--Exception capture and processing--Custom exception classes

7.4 Custom Exception classes

Defining an exception class only requires inheriting the exception class.

Example: Custom Exception class

Class:myexception

 PackageLimethrowable._7_4; Public classMyExceptionextendsException {//Custom exception classes, inheriting the exception class    /**     *      */    Private Static Final LongSerialversionuid = 1L; //Construction method receives exception information     Publicmyexception () {Super(); }     PublicMyException (String message, throwable cause,BooleanEnablesuppression,Booleanwritablestacktrace) {        Super(message, cause, enablesuppression, writablestacktrace); }     Publicmyexception (String message, throwable cause) {Super(message, cause); }     Publicmyexception (String message) {Super(message); }     Publicmyexception (Throwable cause) {Super(cause); }}

Class:main

 Package Limethrowable._7_4;  Public class defaultexception {    publicstaticvoid  main (string[] args) {         Try {            thrownew myexception ("Custom exception. ");        } Catch (Exception e) {            System.out.println (e);     }}}

Console:

Limethrowable._7_4.myexception: Custom Exception.

7.5 Assertions

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Java--Exception capture and processing--Custom exception classes