What are the rules for type casting Java objects?
The rules for Java object casting are as follows:
- Only compatible types can be subject to typecasting. For instance, a parent class object can be casted to a child class object, but not vice versa.
- To perform a type conversion, you need to use a casting operator by putting the object to be converted inside parentheses.
- If the actual type of an object is incompatible with the target type during a forced type conversion, a ClassCastException exception will be thrown.
- Typecasting can only be done within an inheritance relationship, meaning you can only convert a child class object into a parent class object, and not between unrelated classes.
- Type coercion can result in loss of information because certain methods and member variables of the target type may not be accessible.
- Type coercion is a potentially risky operation that requires type checking before conversion to ensure safety.