class

问题 I want to force subclass to implement an implemented method of my mother class. I look this Java - Force implementation of an implemented method but i can't convert my mother class to an abstract class. public class myMotherClass { myMethod { ...some code .. } } public class myClass extends myMotherClass { myMethod { ... other code ... } } So, in this exemple, I want to force myClass implement myMethod. Sorry for my english... 回答1: You can not force a subclass to override a method. You can

问题 Introduction I have a Python class, which contains a number of methods. I want one of those methods to have a static counterpart—that is, a static method with the same name—which can handle more arguments. After some searching, I have found that I can use the @staticmethod decorator to create a static method. Problem For convenience, I have created a reduced test case which reproduces the issue: class myclass: @staticmethod def foo(): return 'static method' def foo(self): return 'public

问题 I am looking for an algorithm that can get the object that called the method, within that method. For instance: public class Class1 { public void Method () { //the question object a = ...;//the object that called the method (in this case object1) //other instructions } } public class Class2 { public Class2 () { Class1 myClass1 = new Class1(); myClass1.Method(); } public static void Main () { Class2 object1 = new Class2(); //... } } Is there any way to do this? 回答1: Obviously i don't know the

问题 Was just wondering if there was any software out there to do this? The storage engine is InnoDB so the foreign keys are in place to connect the tables up in the diagram (if such software even exists). 回答1: You can generate a data model from the data table that shows foreign key constraints using Enterprise Architect. That gives you a data model in a UML tool that you can easily trace to other UML artifacts. It does not auto-create a class model from the data tables however. It is not best

问题 Was just wondering if there was any software out there to do this? The storage engine is InnoDB so the foreign keys are in place to connect the tables up in the diagram (if such software even exists). 回答1: You can generate a data model from the data table that shows foreign key constraints using Enterprise Architect. That gives you a data model in a UML tool that you can easily trace to other UML artifacts. It does not auto-create a class model from the data tables however. It is not best

问题 This question already has answers here : Convert XML String to Object (14 answers) Closed 6 years ago . I have this XML and just wondering how I can convert into C# class ? <?xml version="1.0" encoding="utf-8"?> <TextScrollerItems xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <Item type="text" ID="234"> <Text Color="Blue"> Sample text... </Text> </Item> <Item type="image" ID="2456"> <Image> clientLogo.png </Image> </Item> <

问题 This question already has answers here : Convert XML String to Object (14 answers) Closed 6 years ago . I have this XML and just wondering how I can convert into C# class ? <?xml version="1.0" encoding="utf-8"?> <TextScrollerItems xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <Item type="text" ID="234"> <Text Color="Blue"> Sample text... </Text> </Item> <Item type="image" ID="2456"> <Image> clientLogo.png </Image> </Item> <

问题 Till I read this on Oracle Doc (Class methods cannot access instance variables or instance methods directly—they must use an object reference) the only thing I know, about instance methods and variables are not able to be accessed by the class(static) methods directly. What does it mean when it says ....they must use an object reference? Does it mean we can access instance variables and methods indirectly using class methods? Thank you in advance. 回答1: It means that this is allowed: public

问题 How can I get java classes from an xml file? In this situation, I don't have an XML schema and this way I can't use JAXB, Castor or other xml binding API as far as I know. 回答1: You can generate schema from XML file using certain tools. Then, use Apache XMLBEANS to create your classes. 回答2: XStream is great for XML -> objects and vice versa. Fast, lightweight, and works well without any schema. 回答3: Altova is also the best to generate java Classes from XML/XSD 来源： https://stackoverflow.com

问题 I'd like to create several instances of a class in CodeIgniter. I have created my class as a library, but cannot figure out the syntax to use to create more than one instance. 回答1: From the CodeIgniter users guide: CI Users Guide: Loader Class Assigning a Library to a different object name If the third (optional) parameter is blank, the library will usually be assigned to an object with the same name as the library. For example, if the library is named Session, it will be assigned to a