Some examples of concrete classes from the JDK are HashMap, HashSet, ArrayList, and LinkedList .
Read moreWhich class can use all the features of an established class?
Explanation: Object class is superclass of every class in Java.
Read moreCan classes be used as a data type?
A class is a type of a data type . It allows you to declare a variable along with its datatype.
Read moreWhat is classes in Java with example?
Everything in Java is associated with classes and objects, along with its attributes and methods. For example: in real life, a car is an object. The car has attributes, such as weight and color, and methods, such as drive and brake. A Class is like an object constructor, or a “blueprint” for creating objects .
Read moreWhat are the types of classes in Java?
There are seven types of classes in Java:
Read moreIs a class also a type in Java?
Java provides a class with name Class in java. … Instances of the class Class represent classes and interfaces in a running Java application. The primitive Java types (boolean, byte, char, short, int, long, float, and double), and the keyword void are also represented as Class objects.
Read moreWhat does type mean in Java?
The types of the Java programming language are divided into two categories: primitive types and reference types . The primitive types (§4.2) are the boolean type and the numeric types. The numeric types are the integral types byte , short , int , long , and char , and the floating-point types float and double .
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