SFDC Solutions

  We can get current logged in user full information from predefined methods in apex. *** // get current user id         String loggedUserId = UserInfo.getUserId(); // get current user name         String loggedUserName = UserInfo.getName();   // get current user username         String loggedUserUserName = UserInfo.getUserName();          // get current user email         String loggedUserEmail = UserInfo.getUserEmail();          // get current user language         String loggedUserLanguage = UserInfo.getLanguage();          // get current user profile id         String loggedUserProfileId = UserInfo.getProfileId();          // get current user role id         String loggedUserRoleId = UserInfo.getUserRoleId();          // get current user locale         String loggedUserLocale = UserInfo.getLocale();                  System.debug('loggedUserId $$ ' + loggedUserId);         System.debug('loggedUserUserName $$ ' + loggedUserUserName);         System.debug('loggedUs

In below code we just put account name is blank as we know it is required field so when DML will be execute then it will throw an exception. *** public static void showDMLException(){         Account acctRecord = new Account();         acctRecord.Name = '';         try{             INSERT acctRecord;         }catch(Exception ex){             System.debug('exception$$ ' + ex);             if(ex.getTypeName() == 'System.DMLException' || ex.getTypeName() == 'System.MailException'){                 System.debug('dml exception$$ ' + ex.getDMLMessage(0));                }         }     } *** System.debug('exception$$ ' + ex); This statement will show complete exception message. But we need only DML exception message so this message we can get from below conditions. if(ex.getTypeName() == 'System.DMLException' || ex.getTypeName() == 'System.MailException'){      System.debug('dml exception$$ ' + ex.getDMLMessage(0));    }

  Pass object name in method parameter. *** public static void getPrefix(String objName){         Schema.sObjectType sObjType = Schema.getGlobalDescribe().get(objName);         String prefixValue = (sObjType.getDescribe().getKeyPrefix());         System.debug('prefixValue##' + prefixValue);     } *** OR you can get prefix value from here *** Schema.DescribeSObjectResult r = Account .sObjectType.getDescribe(); String keyPrefix = r.getKeyPrefix(); System.debug('keyPrefix##' + keyPrefix); *** Replace Account object from your object name.