Also available as SysOut.java

/**
 * Title: SysOut
 * Description: System.out as OutputStream
 *   "hello" the hard way.
 * @author hollingd@cs.rpi.edu
 */
import java.io.*;

public class SysOut{

    public static void main(String[] args){
        OutputStream stdout = System.out;
        try {
            stdout.write(104);        // h
            stdout.write(101);        // e
            stdout.write(108);        // l
            stdout.write(108);        // l
            stdout.write(111);        // o
            stdout.write(10);        // \n
            stdout.flush();
        } catch ( IOException e) {
            e.printStackTrace();
        }
    }
}