What are the advantages and disadvantages of using the built-in Object class in your application?

The built-in Object class in Java is the base class for all classes, and its use has its advantages and disadvantages.

Advantages:

• Allows working with objects of any type, ensuring versatility.
• Methods equals(), hashCode(), toString() can be overridden to customize object behavior.
• Used for implementing polymorphism and generic data structures.

Disadvantages:

• Using Object without explicit type casting leads to the need for casting, which can cause runtime errors.
• Lack of type safety, which complicates maintenance and increases the risk of errors.
• Overriding Object methods requires caution, otherwise, it can violate method contracts (e.g., equals and hashCode).

Example:

Object obj = "string";
String str = (String) obj; // casting is necessary

Thus, using Object is convenient for generic code but requires attentiveness and a good understanding of types.