The error code returned by the errorcode Enumeration type is tested. An exception message is thrown manually to roll back and forth transactions based on the error code.

Errorcode. Java simple test code. Specific application logic: manually throw exception information and roll back and forth the transaction logic based on the error code.

Public Enum errorcode {// system level success ("000000", "success"), sys_error ("999999", "system exception"), failed ("900000", "operation failed! "), // Transaction part owner_not_exist (" 500002 "," user (owner) does not exist "),; private string code; private string text; private errorcode (string code, string text) {This. code = Code; this. TEXT = text;} Public String getcode () {return code;} public void setcode (string code) {This. code = Code;} Public String gettext () {return text;} public void settext (string text) {This. TEXT = text;} public static void main (string [] ARGs) {errorcode error = errorcode. failed; try {error = testfun (100); // test method.} Catch (exception e) {system. err. println ("E:" + E); string errormsg = E. getmessage (); system. err. println ("errormsg:" + errormsg); system. err. println ("errormsg2:" + E. getlocalizedmessage (); If (errormsg! = NULL) {string [] MSG = errormsg. Split (","); If (MSG! = NULL & MSG. length> 0) {errorcode. sys_error.setcode (MSG [0]); errorcode. sys_error.settext (MSG [1]) ;}// the error code error = errorcode is returned. sys_error; system. err. println ("Code:" + error. getcode (); system. err. println ("text:" + error. gettext () ;}} Private Static errorcode testfun (int I) throws exception {system. err. println ("received parameter value:" + I); errorcode error = errorcode. owner_not_exist; string errormsg = Error. getcode () + "," + error. gettext (); // return exception information. Throw new exception (errormsg); // manually throw an exception. // Throw new exception (); // throw an exception manually. // Return NULL ;}}

 

The error code returned by the errorcode Enumeration type is tested. An exception message is thrown manually to roll back and forth transactions based on the error code.