In Java, anonymous classes provide a way to create a single-use class without explicitly naming it. They are often used in situations where a class is needed to implement an interface or extend a class, but no need exists to define it separately.

One interesting feature of anonymous classes is that we can overload their constructors by providing different numbers or types of parameters. In addition to this, we can also specify different access modifiers for these overloaded constructors.

Let’s take a look at an example to understand how overloading of anonymous classes with different access modifiers works:

public class Main {
    public static void main(String[] args) {
        // Overloaded anonymous class with public constructor
        MyClass publicInstance = new MyClass() {
            public void display() {
                System.out.println("Public Instance");
            }
        };
        publicInstance.display();

        // Overloaded anonymous class with private constructor
        MyClass privateInstance = new MyClass() {
            private void display() {
                System.out.println("Private Instance");
            }
        };
        privateInstance.display(); // Error: display() has private access in MyClass
    }

    static class MyClass {
        public void display() {
            System.out.println("Default Instance");
        }
    }
}

In the above code, we defined an anonymous class MyClass inside the Main class. We then created two instances of this anonymous class, publicInstance and privateInstance, by overloading the constructors.

The publicInstance instance was created with a public constructor, and its display() method was overridden to print “Public Instance”. When calling the display() method on publicInstance, it successfully prints the desired output.

On the other hand, the privateInstance instance was created with a private constructor, and its display() method was also overridden to print “Private Instance”. However, when attempting to call the display() method on privateInstance, a compile-time error occurs because the method has private access in MyClass.

In conclusion, we can overload the constructors of anonymous classes with different access modifiers in Java. However, we must ensure that the overridden methods in these anonymous classes have the same or less restrictive access modifiers as the original methods in the base class.

#Java #AnonymousClasses #AccessModifiers