Java tutorial
//package com.java2s; import java.io.BufferedOutputStream; import java.io.DataOutputStream; import java.io.FileOutputStream; public class Main { public static void writeBin(String fileName, byte[] data) { try { DataOutputStream out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(fileName))); for (byte b : data) { out.writeByte(b); } out.close(); } catch (Exception e) { e.printStackTrace(); } } }