Java tutorial
//package com.java2s; /* * Copyright (C) 2013 The Android Open Source Project * * 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.io.UnsupportedEncodingException; public class Main { private static final int XMP_HEADER_SIZE = 29; private static final String XMP_HEADER = "http://ns.adobe.com/xap/1.0/\0"; /** * Checks whether the byte array has XMP header. The XMP section contains * a fixed length header XMP_HEADER. * * @param data Xmp metadata. */ private static boolean hasXMPHeader(byte[] data) { if (data.length < XMP_HEADER_SIZE) { return false; } try { byte[] header = new byte[XMP_HEADER_SIZE]; System.arraycopy(data, 0, header, 0, XMP_HEADER_SIZE); if (new String(header, "UTF-8").equals(XMP_HEADER)) { return true; } } catch (UnsupportedEncodingException e) { return false; } return false; } }