Hello Fabio, On Sep 22, 7:01 pm, Fabio C Donadon <[email protected]> wrote: > Hi all! > I need some help with lab 1022. I couldn't do it. I can't figure out > how i can convert letters to uppercase if the classes must extends > FilterInputStream and FilterOutputStream instead of FilterReader and > FilterWriter. Perhaps http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html#toUpperCase%28%29 is of use for you? HTH Ewald
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