import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
public class MainClass {
public static void main(String[] args) {
for (int i = 0; i < args.length; i++) {
if (args[i].toLowerCase().endsWith(".gz")) {
try {
FileInputStream fin = new FileInputStream(args[i]);
GZIPInputStream gzin = new GZIPInputStream(fin);
FileOutputStream fout = new FileOutputStream(args[i].substring(0, args[i].length() - 3));
for (int c = gzin.read(); c != -1; c = gzin.read()) {
fout.write(c);
}
fout.close();
} catch (IOException ex) {
System.err.println(ex);
}
} else {
System.err.println(args[i] + " does not appear to be a gzipped file.");
}
}
}
}