why does it say undefined variable

[Sunita Vontel]

Please see the following code
class sample
{
public static void main(String args[])
{
int b = OxFF;
}
}
Why am I getting this error.OxFF is a valid hexadecimal literal right??
sample.java:6: Undefined variable: OxFF
int b = OxFF;
^
1 error

[Paul A]

You have typed OxFF ( the letter 'O' ) instead of 0xFF (zero).
So the compiler thinks that it is some variable and tries to look up this varible in it's table but does not find it. So it says undefined variable!
HTH,
Paul.
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