Here you can find the source of getJpegFileName(long fileNumber)
public static String getJpegFileName(long fileNumber)
//package com.java2s; /*/*from w ww . j av a 2s . c o m*/ * 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. */ public class Main { public static final String FILE_PREFIX = "IMG_"; public static final String JPEG_SUFFIX = ".jpg"; public static String getJpegFileName(long fileNumber) { return String.format("%s%016x%s", FILE_PREFIX, fileNumber, JPEG_SUFFIX); } }