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javasubclasssuperclass

calling overridden function in superclass from subclass in JAVA

Suppose I have two classes A and B where A is a superclass of B. Now, I write a function (override), say funct() in both the classes. Then, if I want to call the funct() in A from an object of B, is it possible?

Solution

  • Given classes like

    class A {
    public void funct() {...}
}

class B extends A {
    @Override 
    public void funct() {...}
}

    You ask

    Then, if I want to call the funct() in A from an object of B, is it possible?

    So let's take

    B b = new B();
b.funct(); 
A a = b;
a.funct();
((A)b).funct();

    The above all do the same thing because of polymorphism and late-binding.

    The only way to call the superclass' implementation is to get a reference to that member through the super keyword.

    class A {
    public void funct() {...}
}

class B extends A {
    @Override 
    public void funct() {
        super.funct();
    }
}