- Can we make constructor static?
- Can we use this () and super () in a method?
- Can an abstract class be static?
- Why we Cannot use this in static method?
- Can we override private method?
- What is method hiding?
- Can we override constructor?
- Can we overload and override the main method?
- Can a constructor be abstract?
- Why abstract methods Cannot be static?
- Can we override the final method?
- Can static methods use this?
- What is static and non static?
- Why Java does not allow overriding a static method?
- Can you override a static method?
- Can you call a static method of an abstract class?
- Can we override main method?
- Can we inherit private method in Java?
Can we make constructor static?
No, we cannot define a static constructor in Java, If we are trying to define a constructor with the static keyword a compile-time error will occur.
In general, static means class level.
A constructor will be used to assign initial values for the instance variables..
Can we use this () and super () in a method?
this() and super(), both are the constructors that’s why must be the first statement. But we can use both in a program. this(): It is used to call, same class Default or Parametrized Constructor. super(): It is used to call, immediate super/parent class Default or Parametrized Constructor.
Can an abstract class be static?
Yes, abstract class can have Static Methods. The reason for this is Static methods do not work on the instance of the class, they are directly associated with the class itself.
Why we Cannot use this in static method?
The “this” keyword is used as a reference to an instance. Since the static methods doesn’t have (belong to) any instance you cannot use the “this” reference within a static method.
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.
What is method hiding?
Java 8Object Oriented ProgrammingProgramming. When super class and sub class contains same method including parameters and if they are static. The method in the super class will be hidden by the one that is in the sub class. This mechanism is known as method hiding.
Can we override constructor?
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.
Can we overload and override the main method?
The short answer to, can we overload the main method in Java is Yes, you can overloading, nothing stops from overloading, but JVM will always call the original main method, it will never call your overloaded main method. … the answer is No because main is a static method and static method cannot be overridden in Java.
Can a constructor be abstract?
You can’t have an abstract constructor, as abstract means you need to provide the implementation for that at some point of time in your subclass. But you cannot override constructor. There will be no point in having an abstract constructor : Since the constructor needs to be of the same name as of class.
Why abstract methods Cannot be static?
An abstract class cannot have a static method because abstraction is done to achieve DYNAMIC BINDING while static methods are statically binded to their functionality. A static method means behavior not dependent on an instance variable, so no instance/object is required.
Can we override the final method?
Any method that is declared as final in the superclass cannot be overridden by a subclass.
Can static methods use this?
The answer is no because static method does not need any object to be called, and this keyword always point to a current object of a class. simply if there is no object then how the keyword point to any current object so,we cannot use this keyword here.
What is static and non static?
A static method belongs to the class, and you do not have to create an instance of the class to access the static method. … A non-static method belongs to an object of the class, and you have to create an instance of the class to access the non-static method.
Why Java does not allow overriding a static method?
Can we Override static methods in java? We can declare static methods with same signature in subclass, but it is not considered overriding as there won’t be any run-time polymorphism. Hence the answer is ‘No’.
Can you override a static method?
The answer is, No, you can not override static method in Java, though you can declare a method with the same signature in a subclass. It won’t be overridden in the exact sense, instead, that is called method hiding.
Can you call a static method of an abstract class?
You cannot create an abstract static method. … Yes, of course you can define the static method in abstract class. you can call that static method by using abstract class,or by using child class who extends the abstract class. Also you can able to call static method through child class instance/object.
Can we override main method?
No, we cannot override main method of java because a static method cannot be overridden. The static method in java is associated with class whereas the non-static method is associated with an object.
Can we inherit private method in Java?
Yes. A java private member cannot be inherited as it is available only to the declared java class. Since the private members cannot be inherited, there is no place for discussion on java runtime overloading or java overriding (polymorphism) features.