temp temp wrote:
The object which I want to convert into Integer is a number and can be
converted to int, its not a string or a boolean .
I get this object either from request attribute , or request parameter or a
DAO.
If I get this ob ject from request parameter I cannot cast it to integer
because I get compilation error stating that cannot cast a String to integer
in this case do I have to create a new Integer every time ?
Thanks & Regards
Technically the code I wrote below will work for String objects as well.
You have to create a new integer every time, because it first needs to
be parsed. It might be a number, but it's a number stored in a String.
You have to express this to the language:
Integer someInt = new Integer( request.getParameter( "param" ) );
You also have to wrap it in try { ... } catch ( NumberFormatException e
) { ... } for those "just in case" situations.
If it's an attribute of the request, you need to first cast it to a
String, if that's the way it was stored:
Integer someInt = new Integer( (String)request.getAttribute( "attr" ) );
- Scott
Scott Van Wart <[EMAIL PROTECTED]> wrote: temp temp wrote:
What is the best way to convert an object to an Integer .If casting dosen't
work?
Object probablyAnInteger = ....;
Integer someInt;
if ( probablyAnInteger == null || probablyAnInteger.equals( "" ) )
{
someInt = null;
}
else
{
try
{
someInt = new Integer( probablyAnInteger.toString() );
}
catch ( NumberFormatException e )
{
// definitely not an integer
someInt = null;
}
}
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