Can you cast a parent to a child in Java?

However, we can forcefully cast a parent to a child which is known as downcasting. After we define this type of casting explicitly, the compiler checks in the background if this type of casting is possible or not. If it’s not possible, the compiler throws a ClassCastException.

Can a parent be cast to a child?

Parent to Child (Explicit casting – Can be successful) Note: Because objects has polymorphic nature, it is possible for a variable of a parent class type to hold a child type. Conclusion : After reading above all, hope it will make sense now like how parent to child conversion is possible(Case 3).

Can we store parent object to child in Java?

The parent class can hold reference to both the parent and child objects. If a parent class variable holds reference of the child class, and the value is present in both the classes, in general, the reference belongs to the parent class variable. This is due to the run-time polymorphism characteristic in Java.

Can we assign parent object to child objects?

The reference variable of the Parent class is capable to hold its object reference as well as its child object reference.

Is Downcasting possible in Java?

Upcasting is allowed in Java, however downcasting gives a compile error. The compile error can be removed by adding a cast but would anyway break at the runtime.

What is class cast exception in Java?

ClassCastException is a runtime exception raised in Java when we try to improperly cast a class from one type to another. It’s thrown to indicate that the code has attempted to cast an object to a related class, but of which it is not an instance.

Can we downcast in Java?

Is a relationship in Java?

In Java, an Is-A relationship depends on inheritance. Further inheritance is of two types, class inheritance and interface inheritance. When there is an extends or implement keyword in the class declaration in Java, then the specific class is said to be following the Is-A relationship.

How do I cast an exception in Java?

ClassCast Exception in Java is one of the unchecked exceptions that occur when we try to convert one class type object into another class type. ClassCast Exception is thrown when we try to cast an object of the parent class to the child class object.