Re: Itchy problem
On May 9, 4:21 pm, Ravi <ra.ravi....@gmail.com> wrote:
import java.io.*;
class DataIO {
public static void main(String args[]) {
FileOutputStream f;
try {
f = new FileOutputStream("test");
} catch (FileNotFoundException fe) {
System.out.println(fe);
System.exit(1);
}
DataOutputStream d = new DataOutputStream(f);
try {
d.writeDouble(7.6d);
d.writeFloat(90.9f);
d.writeChars("Ravi");
d.close();
f.close();
} catch (IOException ioe) {
System.out.println(ioe);
System.exit(2);
}
}
}
Gives the error:
DataIO.java:12: variable f might not have been initialized
DataOutputStream d = new DataOutputStream(f);
^
How to resolve this problem.
I think the key to this is the "try...catch". Since you are setting f
inside the "try" if it fails (hence try) on something beside the fnfe
then by the time that DataOutputStream d = new DataOutputStream(f);
is executed, the f variable may not be instantiated. I'm not sure if
this will work, but if you initialize f to null outside the try..catch
and then test for it being != null outside, before you create the d
object, you might be able to get around the error. I don't claim this
will work, nor do I claim it to be the best or prettiest solution.
You might try reading the Sun Java Tutorial, or search this ng for a
link to Roedy's site.