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import java.io.FileInputStream;
import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class MainClass {
public static void main(String[] args) throws Exception {
InputStream in = new FileInputStream("test.txt");
OutputStream out = System.out;
PrintableOutputStream pout = new PrintableOutputStream(out);
for (int c = in.read(); c != -1; c = in.read()) {
pout.write(c);
}
out.close();
}
}
class PrintableOutputStream extends FilterOutputStream {
public PrintableOutputStream(OutputStream out) {
super(out);
}
public void write(int b) throws IOException {
// carriage return, linefeed, and tab
if (b == '\n' || b == '\r' || b == '\t')
out.write(b);
// non-printing characters
else if (b < 32 || b > 126)
out.write('?');
// printing, ASCII characters
else
out.write(b);
}
public void write(byte[] data, int offset, int length) throws IOException {
for (int i = offset; i < offset + length; i++) {
this.write(data[i]);
}
}
}
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