Here you can find the source of SaveIntFile(int[] list, String filename)
| Parameter | Description |
|---|---|
| list | The array of ints to save. |
| filename | The name of the file to write. |
public static void SaveIntFile(int[] list, String filename)
//package com.java2s; /* /*from w ww .j av a2s.c o m*/ * File: FileUtil.java * * Copyright (C) 2010, Dennis Mikkelson * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. * * Contact : Dennis Mikkelson <mikkelsond@uwstout.edu> * Department of Mathematics, Statistics and Computer Science * University of Wisconsin-Stout * Menomonie, WI 54751, USA * * This work was supported by the Spallation Neutron Source Division * of Oak Ridge National Laboratory, Oak Ridge, TN, USA. * * Last Modified: * * $Author:$ * $Date:$ * $Revision:$ */ import java.io.*; public class Main { /** * Save the specified array of ints in the specified file IN PC FORMAT. * * @param list The array of ints to save. * @param filename The name of the file to write. */ public static void SaveIntFile(int[] list, String filename) { if (list == null) throw new IllegalArgumentException("Array of ints is null"); if (filename == null) throw new IllegalArgumentException("Filename String is NULL"); byte[] buffer = new byte[4 * list.length]; for (int i = 0; i < list.length; i++) setInt_32(list[i], buffer, 4 * i); try { RandomAccessFile r_file = new RandomAccessFile(filename, "rw"); r_file.write(buffer); r_file.close(); } catch (Exception ex) { System.out.println(ex); ex.printStackTrace(); throw new IllegalArgumentException("Error writing file " + filename); } } /** * Encode the int value into a sequeence of fout bytes in the buffer * starting at position i. The four bytes determining the int value * are stored in buffer in the sequence: b0, ... b3, with the lowest * order byte, b0, first and the the highest order byte, b3, last. * * @param value The int value to be stored in four successive bytes * of the buffer. * * @param buffer The byte buffer where the bytes are to be stored. * * @param i The index in the buffer where the first byte of the * int should stored. */ public static void setInt_32(int value, byte[] buffer, int i) { for (int count = 0; count < 4; count++) { buffer[i++] = (byte) (value & 0xFF); value = value >> 8; } } }