How can you execute a function as soon as a class is instantiated?

In Python, you can run code immediately when an object is created by placing it inside the __init__ method, which is the constructor. For example:

class MyClass:

def __init__(self):
    self.initialize()

def initialize(self):
    print("Object created")

obj = MyClass() # prints "Object created"

In Java, you achieve the same by putting the code in the constructor or a static initializer block if you want it to run when the class is first loaded:

public class MyClass {

public MyClass() {
    initialize();
}

private void initialize() {
    System.out.println("Object created");
}

}

MyClass obj = new MyClass(); // prints "Object created"

Both approaches ensure the function runs automatically at instantiation time.