An abstract class is a class declared with an abstract keyword which is a collection of abstract and non-abstract methods while a concrete class is a class that allows creating an instance or an object using the new keyword. Thus, this is the main difference between abstract class and concrete class.
Read moreWhat is abstract and concrete method?
Abstract classes may contain abstract methods, but concrete classes can’t . Abstract classes usually have partial or no implementation. On the other hand, concrete classes always have full implementation of its behavior. Unlike concrete classes, abstract classes cannot be instantiated.14 Tem 2014
Read moreWhat are classes in Java?
A class — in the context of Java — is a template used to create objects and to define object data types and methods . Classes are categories, and objects are items within each category. All class objects should have the basic class properties.
Read moreWhat are the types of classes available in Java?
There are seven types of classes in Java:
Read moreHow many inbuilt package are there in Java?
All Packages PackageDescriptionjava.awt.imProvides classes and interfaces for the input method framework.java.awt.im.spiProvides interfaces that enable the development of input methods that can be used with any Java runtime environment.java.awt.imageProvides classes for creating and modifying images.All Packages (Java SE 14 & JDK 14) – Oracle Help Center docs.oracle.com › java › javase › docs › api › allpackages-index
Read moreHow do you declare a class attribute in Java?
Java Class Attributes
Read moreWhat are the key attributes in Java?
Key Features of the Java Language
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