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What else can I help you with?
Discuss final method and final classes?
a method declared final can not be overridden, and a class declared as final can not be extended by its sub class.
Can you override an instance method and make it final?
No. Once a method is declared final in a class, no derivative of that class can override that method.
Are you allowed to declared main method in every class?
Yes. Every Java class can have a main method
What value is return by int main method?
1. A method declared as "int" returns an int value. 2. The main() method in Java is not declared as "int", but as "void", meaning it returns no value.
What method in Java cannot be overridden?
Methods which are declared final cannot be overridden.
What is fix in java?
fixed method means is one which cannot be overridden by a subclass. A fixed method can be declared by prefixing the word-final before a method. We can use the keyword final to donate a constant.
What are the valid signatures of the main method of a class?
The main method can be declared as either of the below: public static void main(String[] args) or public static void main(String args[])
Can you take private methods and final methods as same?
Yes, a method which is declared as private is inaccessible to subclasses, and can thus be thought of as final, as well.
Can you declare main as final or not and why?
Yes you can. Try this: public class TestMain { /** * @param args */ public static final void main(String[] args) { System.out.println("Inside final mail method..."); } } It will print "Inside final mail method..." in the console.
What are the rules for overriding a method in Java?
Realistically, the only real rule is that you may NOT override a method which has been declared 'final' by a superclass. By inference, you of course cannot extended a class that has itself been declared 'final', so no method in a final class can be overridden.In addition to the above restriction on whether you are permitted to override a method, there are several restrictions which you must obey when creating an override method:The scope (visibility) of the method may not be more restrictive than the one being overridden. For example, a method which is declared 'public' cannot be overridden with one which is declared 'package' or 'private'The override method's declared exceptions must be a subset of the original (i.e. you can removed Exceptions to be handled, but never add new ones that aren't a subtype of already existing Exceptions).The return type must either stay the same, or be a subclass of the original method's return type.And, of course, the declaration of arguments (type and number) must not change; otherwise, you are writing an Overloaded method, not an Overridden method.
Do you use virtual functions in Java?
Every method in java that isn't a class (static) method is automatically "virtual." If you want to disable virtual overrides, make the method "final" in the base class.
Any method in a super class can be overridden in its subclass?
False.Any method declared as final cannot be overridden by any subclasses.You also cannot technically override a private method. While your subclass can have a method with the same definition as a private method in the superclass, it does not actually override that method.
