Java tutorial
import java.io.BufferedInputStream; import java.io.BufferedOutputStream; 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 { BufferedInputStream bin = new BufferedInputStream(in); BufferedOutputStream bout = new BufferedOutputStream(out); while (true) { int datum = bin.read(); if (datum == -1) break; bout.write(datum); } bout.flush(); } }