StreamLambda.java

package io.symphonia;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class StreamLambda {
    public void handlerStream(InputStream inputStream, OutputStream outputStream) throws IOException {
        int letter;
        while((letter = inputStream.read()) != -1)
        {
            outputStream.write(Character.toUpperCase(letter));
        }
    }
}