Upcasting and downcasting in java

Upcasting in java

Upcasting is a type of object typecasting in which a child object is typecasted to a parent class object. By using the Upcasting, we can easily access the variables and methods of the parent class to the child class. Here, we don't access all the variables and the method. We access only some specified variables and methods of the child class. Upcasting is also known as Generalization and Widening.

Upcasting and downcasting in java

A process of converting one data type to another is known as Typecasting and Upcasting and Downcasting is the type of object typecasting. In Java, the object can also be typecasted like the datatypes. Parent and Child objects are two types of objects. So, there are two types of typecasting possible for an object, i.e., Parent to Child and Child to Parent or can say Upcasting and Downcasting.

Downcasting in java

Downcasting is casting to a subtype, 
going down in the inheritance tree.
It is done to access sub class features.
It has to be done manually

(TakeScreenShot)driver).takeScreenShot();

Similar codes

86 votes333 views8 answers
Java hello world
Java
0 vote341 views1 answer
Spring Security JWT Authentication + PostgreSQL – RestAPIs SpringBoot + Spring MVC + Spring JPA
Java Spring
0 vote314 views1 answer
Create object and call method in java
Java
0 vote331 views2 answers
Round to the next multiple of 5
Java
0 vote366 views1 answer
Constraint layout not matching parent in netsted scrollview
Java
0 vote309 views1 answer
Javafx get listview fxml id
Java
0 vote355 views1 answer
Was ist ein String in java
Java
0 vote347 views1 answer
How to sort a interable in java
Java
1 vote372 views1 answer
Get element in arraylist java
Java
-1 vote323 views1 answer
Class java.lang.Integer cannot be cast to class java.lang.Long (java.lang.Integer and java.lang.Long are in module java.base of loader 'bootstrap')
Java