Home » JAVA Programming » Object & Classes » Question

Object & Classes

Easy Questions

JAVA Programming

Java Basic
Basic Syntax
Object & Classes
Basic Datatypes
Variable Types
Modifier Types
Basic Operators
Loop Control
Decision Making
Numbers
Characters
Strings
Arrays
Date & Time
Regular Expressions
Methods
Files and I/O
Exceptions
Inheritance
Polymorphism
Abstraction
Encapsulation
Interfaces
Packages
Data Structures
Collections
Generics
Serialization
Networking
Multithreading
Applet
  1. Which of these is a super class of wrappers Double & Integer?
    1. Float
    2. Number
    3. Digits
    4. Long
    5. None of these
Correct Option: B

Number is an abstract class containing subclasses Double, Float, Byte, Short, Integer and Long.


Your comments will be displayed only after manual approval.