import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; public class MainClass { public static void main(String[] args) { try { copy(System.in, System.out); } catch (IOException ex) { System.err.println(ex); } } public static void copy(InputStream in, OutputStream out) throws IOException { byte[] buffer = new byte[1024]; while (true) { int bytesRead = in.read(buffer); if (bytesRead == -1) break; out.write(buffer, 0, bytesRead); } } }