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Wrapper Classes

Posted By: Tasneem Hashmi     Category: Java     Views: 3611

This article explains about wrapper classes available in java.

A class that wraps primitive values in an object is called wrapper class. Wrapper classes are used to represent primitive values when an Object is required. Notice that an Object starts with a capital letter, while the primitives all start with a lowercase. Also notice that Strings are Objects.

The primitive wrapper classes and their corresponding primitive types are :

 Primitive type

Wrapper Class 

Constructor Arguments 

 byte

Byte 

byte or String 

 short

Short 

short or String

 int

Integer 

int or String 

 long 

Long 

long or String 

 float 

Float 

float, double or String 

 double

Double 

double or String 

 char

Character

char 

 boolean 

Boolean

boolean or String 



Examples of Wrapper Classes

Refer below links for examples of wrapper classes.









  
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Tasneem Hashmi
Tasneem Hashmi author of Wrapper Classes is from Lahore, Pakistan.
 
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