Can We Override Overloaded Method in Java?
Yes, we can override overloaded method in Java.
Overriding: Overriding is a feature of OOP languages like Java that is related to run-time polymorphism. A subclass (or derived class) provides a specific implementation of a method in superclass (or base class). The implementation to be executed is decided at run-time and decision is made according to the object used for call. Note that signatures of both methods must be same.
Overloading: Overloading is a feature of OOP languages like Java that is related to compile time (or static) polymorphism. This feature allows different methods to have same name, but different signatures, especially number of input parameters and type of input paramaters. Note that in Java, methods cannot be overloaded according to return type.
Here is an example code that demonstrates overriding of overloaded methods.
// Superclass public class Base { public void display() { System.out.println("No argument display method method from Base"); } // overloaded display method public void display(String str) { System.out.println("One argument display method method from Base " + str); } } //Subclass public class Derived extends Base { // Overriding the no-arg display public void display() { System.out.println("No argument display method method from Derived"); } // Overriding the one-arg display public void display(String str) { System.out.println("One argument display method method from Derived " + str); } } public class Test { public static void main(String args[ ]) { Base obj1 = new Base(); obj1.display(); obj1.display("Hello"); obj1 = new Derived(); obj1.display(); obj1.display("Hello"); } } Output: No argument display method method from Base One argument display method method from Base Hello No argument display method method from Derived One argument display method method from Derived Hello
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