how to restrict inheritance in Java most asked interview questions #java

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In this Java tutorial, we will explore the concept of restricting inheritance, which allows you to prevent a class from being extended or inherited by other classes. By leveraging the power of the `final` keyword, we can effectively enforce restrictions and maintain control over our class hierarchy.

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🔧 Code Example:

```java
// Preventing class extension using the final keyword

// Final class that cannot be extended
final class FinalClass {
// Class implementation goes here
}

// This class cannot extend FinalClass due to the final keyword
class ChildClass extends FinalClass {
// Compilation error will occur here
}

public class Main {
public static void main(String[] args) {
// Creating an instance of the FinalClass
FinalClass finalObj = new FinalClass();

// Performing operations using finalObj

// ...
}
}
```

In this code example, we define a `FinalClass` using the `final` keyword, indicating that it cannot be extended. We then attempt to create a `ChildClass` that extends `FinalClass`, resulting in a compilation error. The `Main` class demonstrates how to create an instance of `FinalClass` and perform operations within it.

By understanding and implementing the concepts covered in this tutorial, you can control the inheritance hierarchy in your Java programs and design classes that cannot be extended, providing more control over your codebase.

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#java #programming #inheritance #javatutorial