Here you can find the source of writeString(OutputStream os, String s)
public static void writeString(OutputStream os, String s) throws IOException
//package com.java2s; //License from project: Apache License import java.io.IOException; import java.io.OutputStream; public class Main { public static void writeString(OutputStream os, String s) throws IOException { byte[] b = s.getBytes("UTF-8"); writeLong(os, b.length);//from w w w . j a v a2s . c o m os.write(b, 0, b.length); } public static void writeLong(OutputStream os, long n) throws IOException { os.write((byte) (n >>> 0)); os.write((byte) (n >>> 8)); os.write((byte) (n >>> 16)); os.write((byte) (n >>> 24)); os.write((byte) (n >>> 32)); os.write((byte) (n >>> 40)); os.write((byte) (n >>> 48)); os.write((byte) (n >>> 56)); } }