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java的compareto方法

Java的compareTo()方法是用于比较两个对象的大小关系的方法。它属于Comparable接口的方法，用于实现对象的自然排序。compareTo()方法的语法如下：publicintcompareTo(Objectobj)该方法接受一个Object类型的参数obj，表示要与当前对象进行比较的对象。它返回一个整数...

开发笔记 ·2024-08-26

树莓派4B终端上输入gpio readall提示gpio: error while loading shared libraries: libcrypt.so.1: cannot open shared object file: Error 40

如果你的系统是64位的话，在使用最新的树莓派的64位系统。使用旧版本的WiringPi来进行IO控制的时候，由于原版已经不再更新，对于新的树莓派使用时存在指令无法使用的问题。 ...

开发笔记 ·2024-07-04

ORA-64143: Can only share an existing XMLIndex table with an XMLTYPE column.

文档解释ORA-64143:CanonlyshareanexistingXMLIndextablewithanXMLTYPEcolumn.Cause:AnattemptwasmadetoshareatablewithoutanXMLTYPEcolumn.Action:DropthegroupcontainingtheX...

IT技术学习 ·2023-07-28

ORA-38810: Implementation restriction: cannot drop edition that has a parent and a child

文档解释ORA-38810:Implementationrestriction:cannotdropeditionthathasaparentandachildCause:Thiserroroccurredbecauseanattemptwasmadetodropaneditionthathasaparentandac...

IT技术学习 ·2023-07-28

ORA-44742: Cannot alter columns of a table that is shared by other group(s).

文档解释ORA-44742:Cannotaltercolumnsofatablethatissharedbyothergroup(s).Cause:Anattemptwasmadetoaddcolumnsto,modifycolumnsof,ordropcolumnsfromatablesharedbyothergro...

IT技术学习 ·2023-07-28

ORA-29550: Java session state cleared

文档解释ORA-29550:JavasessionstateclearedCause:TheJavastateinthecurrentsessionbecameinconsistentandwascleared.Action:Noactionrequired.ORA-29550：Java会话状态已清除官方解释提示你在关...

IT技术学习 ·2023-07-28

ORA-38808: edition has a usable parent and a usable child

文档解释ORA-38808:editionhasausableparentandausablechildCause:Anattemptwasmadetomakeaneditionwithausableparentandausablechildeditionunusable.Action:Aneditionwithaus...

IT技术学习 ·2023-07-28

ORA-28117: integrity constraint violated – parent record not found

文档解释ORA-28117:integrityconstraintviolated–parentrecordnotfoundCause:trytoupdate/insertachildrecordwithnewforeignkeyvalues,butthecorrespondingparentrowisno...

IT技术学习 ·2023-07-28

ORA-39806: The attempt to lock string parent table string string string failed.

文档解释ORA-39806:Theattempttolockstringparenttablestringstringstringfailed.Cause:Whileloadingthechildtableofapartitioningreferentialconstraint,theparenttablemustbe...

IT技术学习 ·2023-07-28

ORA-54518: shared edge of composite surface not oriented correctly

文档解释ORA-54518:sharededgeofcompositesurfacenotorientedcorrectlyCause:Asharededge(onesharedbytwopolygons)inacompositesurfacewasnotcorrectlyoriented.Eachsharededge...

IT技术学习 ·2023-07-28

ORA-16707: the value of the property string is invalid, valid values are string

文档解释ORA-16707:thevalueofthepropertystringisinvalid,validvaluesarestringCause:Aninvalidpropertyvaluewasspecifiedwhilebrokermanagementofthedatabasewasdisabled.Act...

IT技术学习 ·2023-07-28

ORA-19290: XQST0069 – more than one empty order declaration declared in the prolog

文档解释ORA-19290:XQST0069–morethanoneemptyorderdeclarationdeclaredintheprologCause:Aprologhadmorethanoneemptyorderdeclaration.Action:Fixtheprologtohavejuston...

IT技术学习 ·2023-07-28

ORA-16264: invalid value for PREPARE_SERVERS parameter

文档解释ORA-16264:invalidvalueforPREPARE_SERVERSparameterCause:attempttosetPREPARE_SERVERSparametertozeroortoavaluewhichwouldrequireMAX_SERVERStobeincreased.Action:...

IT技术学习 ·2023-07-28

ORA-24043: destination string uses a reserved name, names with AQ$_ prefix are not valid

文档解释ORA-24043:destinationstringusesareservedname,nameswithAQ$_prefixarenotvalidCause:Anattemptwasmadetospecifyareservednameforadestination.Action:Enteradifferen...

IT技术学习 ·2023-07-28

ORA-30984: The XMLType column has to be declared as virtual

文档解释ORA-30984:TheXMLTypecolumnhastobedeclaredasvirtualCause:TheXMLTypecolumnwasnotdeclaredasvirtualwhencreatingastructuredXMLIndex.Action:TheXMLTypecolumnhastob...

IT技术学习 ·2023-07-28