I would recommend generateDS for converting a XSD file to a Python class . In my opinion, it is a good tool for the said purpose.It (generatS) generates the Python class with all methods (setters and getters, export to XML, import from XML). It does a good job and works very well !.

We can declare an interface in another interface or class. Such an interface is termed as a nested interface.The following are the rules governing a nested interface.A nested interface declared within an interface must be public.A nested interface declared within a class can have any access modifier.A nested interface is by default static.Following is an example of a nested interface.ExampleLive Democlass Animal {    interface Activity {       void move();    } } class Dog implements Animal.Activity {    public void move() {       System.out.println("Dogs can walk and run");    } } public class Tester { ... Read More

Java 8 introduces a new concept of default method implementation in interfaces. This capability is added for backward compatibility so that old interfaces can be used to leverage the lambda expression capability of Java 8.For example, ‘List’ or ‘Collection’ interfaces do not have ‘forEach’ method declaration. Thus, adding such method will simply break the collection framework implementations. Java 8 introduces default method so that List/Collection interface can have a default implementation of forEach method, and the class implementing these interfaces need not implement the same. An interface can also have static helper methods from Java 8 onwards

EncapsulationEncapsulation is one of the four fundamental OOP concepts. The other three are inheritance, polymorphism, and abstraction.Encapsulation in Java is a mechanism for wrapping the data (variables) and code acting on the data (methods) together as a single unit. In encapsulation, the variables of a class will be hidden from other classes and can be accessed only through the methods of their current class. Therefore, it is also known as data hiding.To achieve encapsulation in Java −Declare the variables of a class as private.Provide public setter and getter methods to modify and view the variables values.AbstractionAbstraction is the quality of ... Read More

Yes, a variable can be downcast to its lower range substitute by casting. It may lead to data loss although. See the example below −Example Live Demopublic class Tester {    public static void main(String[] args) {       int a = 300;       byte b = (byte)a;       System.out.println(b);    } }OutputIt will print output as44

Method overriding is an example of runtime polymorphism. In method overriding, a subclass overrides a method with the same signature as that of in its superclass. During compile time, the check is made on the reference type. However, in the runtime, JVM figures out the object type and would run the method that belongs to that particular object.ExampleSee the example below to understand the concept − Live Democlass Animal {    public void move() {       System.out.println("Animals can move");    } } class Dog extends Animal {    public void move() {       System.out.println("Dogs can walk and ... Read More

Yes, a final method is inherited but cannot be overridden.

Yes! You can initialize a blank final variable in constructor or instance initialization block.

Covariant return type refers to return type of an overriding method. It allows to narrow down return type of an overridden method without any need to cast the type or check the return type. Covariant return type works only for non-primitive return types.From Java 5 onwards, we can override a method by changing its return type only by abiding the condition that return type is a subclass of that of overridden method return type.Following example showcases the same.Example Live Democlass SuperClass {    SuperClass get() {       System.out.println("SuperClass");       return this;    } } public class Tester ... Read More

Yes, we can override a method by changing only the exception handling in java pertaining the following rule −An overriding method can throw any unchecked exceptions, regardless of whether the overridden method throws exceptions or not. However, the overriding method should not throw checked exceptions that are new or broader than the ones declared by the overridden method. The overriding method can throw narrower or fewer exceptions than the overridden method.