Here you can find the source of getCurrentDateAsNumericEncodedByteArray()
public static byte[] getCurrentDateAsNumericEncodedByteArray()
//package com.java2s; /*/* w ww .j a v a 2 s . co m*/ * Copyright 2010 sasc * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.text.SimpleDateFormat; import java.util.Date; public class Main { public static byte[] getCurrentDateAsNumericEncodedByteArray() { SimpleDateFormat format = new SimpleDateFormat("yyMMdd"); return fromHexString(format.format(new Date())); } public static byte[] fromHexString(String encoded) { encoded = removeSpaces(encoded); if (encoded.length() == 0) { return new byte[0]; } if ((encoded.length() % 2) != 0) { throw new IllegalArgumentException( "Input string must contain an even number of characters: " + encoded); } final byte result[] = new byte[encoded.length() / 2]; final char enc[] = encoded.toCharArray(); for (int i = 0; i < enc.length; i += 2) { StringBuilder curr = new StringBuilder(2); curr.append(enc[i]).append(enc[i + 1]); result[i / 2] = (byte) Integer.parseInt(curr.toString(), 16); } return result; } public static String removeSpaces(String s) { return s.replaceAll(" ", ""); } }