- What happens if we override final method?
- Are private methods final?
- Can a constructor override?
- Why can’t a constructor be final?
- Can a constructor be private?
- When should a method be private?
- Can we override private method?
- Can we override private and final methods?
- Can we override static method?
- Can we inherit a constructor?
- What is private final?
What happens if we override final method?
The final method can’t be overridden.
A final method declared in the Parent class cannot be overridden by a child class.
If we try to override the final method, the compiler will throw an exception at compile time..
Are private methods final?
When we use final specifier with a method, the method cannot be overridden in any of the inheriting classes. Methods are made final due to design reasons. Since private methods are inaccessible, they are implicitly final in Java.
Can a constructor override?
Constructor looks like method but it is not. It does not have a return type and its name is same as the class name. But, a constructor cannot be overridden. If you try to write a super class’s constructor in the sub class compiler treats it as a method and expects a return type and generates a compile time error.
Why can’t a constructor be final?
A constructor is never inherited to an another class so it doesn’t need to be marked final. Hey, The constructor cannot be final because the constructor cannot be inherited and in constructor values are initialized to the variable so by this variables changes every time and yes it cannot be inherited.
Can a constructor be private?
Yes, we can declare a constructor as private. If we declare a constructor as private we are not able to create an object of a class. We can use this private constructor in the Singleton Design Pattern.
When should a method be private?
Private methods are useful for breaking tasks up into smaller parts, or for preventing duplication of code which is needed often by other methods in a class, but should not be called outside of that class.
Can we override private method?
No, we cannot override private or static methods in Java. Private methods in Java are not visible to any other class which limits their scope to the class in which they are declared.
Can we override private and final methods?
No, We can not override private method in Java, just like we can not override static method in Java. … private methods are not even visible to Child class, they are only visible and accessible in the class on which they are declared. private keyword provides highest level of Encapsulation in Java.
Can we override static method?
Can we Override static methods in java? We can declare static methods with the same signature in the subclass, but it is not considered overriding as there won’t be any run-time polymorphism. Hence the answer is ‘No’.
Can we inherit a constructor?
Constructors are not members, so they are not inherited by subclasses, but the constructor of the superclass can be invoked from the subclass.
What is private final?
The main difference between private and final keyword in Java is that private is primarily an access modifier, which controls the visibility of variable, method, and classes in Java application, while final is just a modifier that enforces additional constraints on the field, method, and class in Java.