collection abstract class in java
It is similar to the container in the C language. While the Collection interface adds no stipulations to the general contract for the Objectequals programmers who implement the Collection interface directly in other words create a class that is a Collection but is not a Set or a List must exercise care.
What Is An Abstract Class And Abstract Method In Java When Should I Use It Example Attached Crunchify Abstract Example Method Coding
An abstract is a java modifier applicable for classes and methods in java but not for Variables.
. An abstract keyword can only be used with class and method. In C if a class has at least one pure virtual function then the class becomes abstractUnlike C in Java a separate keyword abstract is used to make a class abstract. An abstract function abstract void.
The collection is considered as the root interface of the collection framework. An abstract class can contain overloaded abstract methods. While the Collection interface adds no stipulations to the general contract for the Objectequals programmers who implement the Collection interface directly in other words create a class that is a Collection but is not a Set or a List must exercise care.
If a class extends the abstract class it must also implement at least one of the abstract method. It is used to represent a group of individual objects as a single unit. An abstract class can contain the main method and the final method.
An abstract class can contain constructors and static methods. Collection is a interface present in javautilpackage. Abstract class abstract class Shape int color.
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