Flexible Constructor Bodies" (the new Java 25 feature)

​The Problem (Pre-Java 22/25): Traditionally, super() or this() had to be the very first line of a constructor. You couldn't validate data or perform logic before calling the parent class.

​The Solution: You can now execute statements (like if checks or data formatting) before calling the parent constructor.

​The Benefit: This prevents "half-initialized" objects. You can now throw an exception before the parent class even allocates memory, leading to cleaner, safer code.

public class UserAccount extends BaseAccount {

    public UserAccount(String email) {

        // NEW in Java 22/25: Logic 

BEFORE super()

        if (!email.contains("@")) {

            throw new IllegalArgumentException("Invalid email format!");

        }

        

        super(email.toLowerCase()); // Now we pass cleaned data to the parent

        System.out.println("Account created for: " + email);

    }

}