Can we override protected method as private?

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

access specifier

Access modifiers (or access specifiers) are keywords in object-oriented languages that set the accessibility of classes, methods, and other members. Access modifiers are a specific part of programming language syntax used to facilitate the encapsulation of components.

https://en.wikipedia.org › wiki › Access_modifiers

Access modifiers - Wikipedia

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Can we override public method?

Rules for Method Overriding

For example: If the superclass method is declared public then the overridding method in the sub class cannot be either private or protected. Instance methods can be overridden only if they are inherited by the subclass. A method declared final cannot be overridden.

Can you overload a protected method?

protected means access to the method is restricted to the same package or by inheritance. So the answer is, yes, protected methods can be overridden by a subclass in any package.

Why we Cannot override private method?

No, we cannot override the private methods because private methods will not be inherited to sub class. Note: If we create the same method in subclass then JVM will consider it as a sub class method, not the overridden method.

What are the possible access modifiers a protected method can have if it is overridden?

Access Modifiers

Default – No keyword required. Private. Protected. Public.

??can we override static, private final methods in Java | Run Time Polymorphism in java |

Can we override static method?

Overloading is the mechanism of binding the method call with the method body dynamically based on the parameters passed to the method call. Static methods are bonded at compile time using static binding. Therefore, we cannot override static methods in Java.

Can we access protected method in child class?

The protected modifier specifies that the member can only be accessed within its own package (as with package-private) and, in addition, by a subclass of its class in another package. If you want to access the B.f(), you should have the C class defined in the same package as B.

Can private method static?

Yes, we can have private methods or private static methods in an interface in Java 9. We can use these methods to remove the code redundancy. Private methods can be useful or accessible only within that interface only. We can't access or inherit private methods from one interface to another interface or class.

Can private class be inherited?

Members of a class that are declared private are not inherited by subclasses of that class. Only members of a class that are declared protected or public are inherited by subclasses declared in a package other than the one in which the class is declared. The answer is No. They do not.

Can private methods be inherited?

private methods are not inherited. A does not have a public say() method therefore this program should not compile.

Can a constructor be overridden?

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.

Can final method be overridden?

You can declare some or all of a class's methods final. You use the final keyword in a method declaration to indicate that the method cannot be overridden by subclasses. The Object class does this—a number of its methods are final .

Can we override the overloaded method?

So can you override an overloaded function? Yes, since the overloaded method is a completely different method in the eyes of the compiler.

Can we overload main method?

Yes, we can overload the main method in Java, but When we execute the class JVM starts execution with public static void main(String[] args) method.

Can we override non abstract method in Java?

"Is it a good practice in Java to override a non-abstract method?" Yes.

Can we inherit static method in Java?

Static methods do not use any instance variables of any object of the class they are defined in. Static methods take all the data from parameters and compute something from those parameters, with no reference to variables. We can inherit static methods in Java.

Can 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.

Can we achieve abstraction without encapsulation?

The object is the abstract form of the real-world and its details are hidden using encapsulation. Thus encapsulation is required for abstraction.

Can you extend a private class?

Well, it certainly can! That doesn't mean it should. Java allows it as extension so it's a nice feature when properly used.

Can abstract method be declared as private?

If a method of a class is private, you cannot access it outside the current class, not even from the child classes of it. But, incase of an abstract method, you cannot use it from the same class, you need to override it from subclass and use. Therefore, the abstract method cannot be private.

Should instance fields be private?

The instance variables are visible for all methods, constructors, and block in the class. Normally, it is recommended to make these variables private (access level). However, visibility for subclasses can be given for these variables with the use of access modifiers. Instance variables have default values.

Can we access protected and private members of a class?

Protected members in a class are similar to private members as they cannot be accessed from outside the class. But they can be accessed by derived classes or child classes while private members cannot.

Can we access protected member outside the package?

A protected member or constructor of an object may be accessed from outside the package in which it is declared only by code that is responsible for the implementation of that object.

Can we access private member outside the package?

Private: The class members declared as private can be accessed only by the functions inside the class. They are not allowed to be accessed directly by any object or function outside the class.

Can we execute a class without a main method?

Yes, we can execute a java program without a main method by using a static block. Static block in Java is a group of statements that gets executed only once when the class is loaded into the memory by Java ClassLoader, It is also known as a static initialization block.