2) Protected members are accessible within a package and inherited classes outside the package. 3) Protected methods are final.
Is Private methods are final in inheritance?
When we use final specifier with a method, the method cannot be overridden in any of the inheriting classes. Since private methods are inaccessible, they are implicitly final in Java. …
Which of the following is true about overriding protected methods?
Yes, the protected method of a superclass can be overridden by a subclass. If the superclass method is protected, the subclass overridden method can have protected or public (but not default or private) which means the subclass overridden method can not have a weaker access specifier.
Which of the following is true about inheritance in Java?
Which of the following is true about inheritance in Java. 1) In Java all classes inherit from the Object class directly or indirectly. The Object class is root of all classes. 2) Multiple inheritance is not allowed in Java.
What is a protected method?
A protected method is like a private method in that it can only be invoked from within the implementation of a class or its subclasses. It differs from a private method in that it may be explicitly invoked on any instance of the class, and it is not restricted to implicit invocation on self .
Are protected methods final by default?
1) Private methods are final. 2) Protected members are accessible within a package and inherited classes outside the package. 3) Protected methods are final.
When a method is final it Cannot be overridden?
Can We Override a Final Method? No, the Methods that are declared as final cannot be Overridden or hidden. For this very reason, a method must be declared as final only when we’re sure that it is complete.
Is finalize method must be declared protected?
The finalize() method is not public because it should only be invoked by JVM and not by anyone else and protected so that it can be overridden by the subclasses.
Can we overload a final method?
private and final methods can be overloaded but they cannot be overridden. It means a class can have more than one private/final methods of same name but a child class cannot override the private/final methods of their base class. … Argument list should be different while doing method overloading.
What is the use of final keyword in Java?
Java final keyword is a non-access specifier that is used to restrict a class, variable, and method. If we initialize a variable with the final keyword, then we cannot modify its value. If we declare a method as final, then it cannot be overridden by any subclasses.
Why multiple inheritance is not allowed in Java?
Java supports multiple inheritance through interfaces only. A class can implement any number of interfaces but can extend only one class. Multiple inheritance is not supported because it leads to deadly diamond problem.
Why Java main method is static and void?
The main() method is static so that JVM can invoke it without instantiating the class. This also saves the unnecessary wastage of memory which would have been used by the object declared only for calling the main() method by the JVM. Void: It is a keyword and used to specify that a method doesn’t return anything.
What does final mean in Java?
In the Java programming language, the final keyword is used in several contexts to define an entity that can only be assigned once. Once a final variable has been assigned, it always contains the same value.
What is protected function?
Protected : when a property or method visibility is set to protected members can only be access within the class itself and by inherited & inheriting classes. (Inherited:- a class can have all the properties and methods of another class).
Are protected methods public?
protected is a version of public restricted only to subclasses. @Tennenrishin — No ; contrary to C++, in Java protected makes the method also accessible from the whole package.