Java Wrapper Classes are immutable?

Hi guys,
The one artichle i have read it says wrapper classes are immutable and once you assign a value to a variable(wrapper class type) you wont be able to change that value ,also ;
Integer myInt=new Integer(5);
myInt=10;//i change it no problem showed up.also why it says wrapper classes are immutable?
//how the java works at the background and change it for us what methods does it use to change the value?
//why java made wrapper classes as immutable?Thanks.

Garibanus wrote:
Hi guys,
The one artichle i have read it says wrapper classes are immutableAnd it was correct in saying that.
and once you assign a value to a variable(wrapper class type) you wont be able to change that valueThat has nothing to do with imutability. If the article said that, it's wrong. If it said that assigning a reference variable to point to an object has anything to do with that object's imutability, it was wrong.
Immutability has to do with the state of an object, not with references that point to it.

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Hi friends,
I am happy to join Java/J2EE tech. My project is
scaled over the network. MVC-II struts, EJB based
architecture, we are using.
We are asked to use Wrapper Classes in in Java
programs and not the primitive data types. I could
not understand the reason.
Pls tell me what is the advantage of using Wrapper
Classes over the primitive data types ?
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As a concrete example, I have a wrapper class LoggedConnection which wraps a java.sql.Connection object. It also implements java.sql.Connection. If you ask a LoggedConnection for a Statement or PreparedStatement it fetches the appropriate object and returns a wrapped version which logs the SQL and the execution times etc..
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reply me soon....

I want to give an example and then explain why it is for. Primitives will be good example for this situation.
Example:
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Primitive to Wrapper Class
byte - Byte
short - Short
int - Integer
long - Long
char - Character
float - Float
double - Double
boolean - Boolean
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USING WRAPPER CLASS
and think using wrapper class of Integer..
CODE ---> int intVar = Integer.parseInt((String)someStringData);
In this case your Integer object have the methods and constants
1 MAX_VALUE ,
2 MIN_VALUE ,
3 parseInt(String s) ,
4 parseInt(String s, int radix) ,
5 toBinaryString(int i) ,
6 toHexString(int i) ,
7 toOctalString(int i) ,
8 toString(int i) ,
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