wrapper classes.

[sujathaL]

hi,
can u give me where exactly we use the wrapper classes.

[dmjpro]

hi,
can u give me where exactly we use the wrapper classes.

What google says?

Debasis Jana

[praveenkumarvpk]

The wrapper classes also offer utility methods for converting to and from the int values they represent. Thus if you have a string that could also represent a number, you can use a wrapper class to perform that calculation.

The methods of the wrapper classes are all static so you can use them without creating an instance of the matching wrapper class. Note that once a wrapper has a value assigned to it that value cannot be changed.

http://www.jchq.net/certkey/0803certkey.htm

[JosAH]

There's also an article in the Java Articles section (see the blue menu bar near
the top of this page) about Wrappers/Decorators.

kind regards,

Jos

[sujathaL]

There's also an article in the Java Articles section (see the blue menu bar near
the top of this page) about Wrappers/Decorators.

kind regards,

Jos

wer exactly is it??m not finding it.....

[JosAH]

wer exactly is it??m not finding it.....

It's on the second page: there.

kind regards,

Jos

[heat84]

An example of their use is when you want to add an integer to a vector.Vectors only contain objects so you have to convert the "wrap" the primitive type and conversion from wrapper to primitive is easy