Java FileOutputStream Write saveInt16bit(String filename, int[] intData)

Description

save Intbit

License

Open Source License

Declaration

public static void saveInt16bit(String filename, int[] intData) 

Method Source Code

//package com.java2s;
/*/*ww w .  j av a 2 s  . c o  m*/
 * Werkzeug
 *
 * Copyright (C) 2012 Patrick Kochlik + Dennis Paul
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser 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
 * {@link http://www.gnu.org/licenses/lgpl.html}
 *
 */

import java.io.File;

import java.io.FileOutputStream;

public class Main {
    public static void saveInt16bit(String filename, int[] intData) {
        saveBytes(filename, convertIntArrayToByteArray(intData, 2));
    }

    public static void saveBytes(String filename, byte[] byteData) {
        try {
            createPath(filename);
            FileOutputStream fileOutputStream = new FileOutputStream(filename);
            fileOutputStream.write(byteData);
            fileOutputStream.close();
        } catch (Exception e) {
            System.err.println("### ERROR @ Util / problem writing data. " + e.toString());
        }
    }

    public static byte[] convertIntArrayToByteArray(int[] myIntArray, int bytesPerInt) {
        /* create a byte array bytesPerFloat times the size of the byte array */
        byte[] myByteArray = new byte[myIntArray.length * bytesPerInt];
        for (int i = 0; i < myIntArray.length; i++) {
            byte[] myBytes = convertIntToByteArray(myIntArray[i], bytesPerInt);
            for (int j = 0; j < bytesPerInt; j++) {
                myByteArray[i * bytesPerInt + (bytesPerInt - j - 1)] = myBytes[j];
            }
        }
        return myByteArray;
    }

    public static void createPath(String filename) {
        final File file = new File(filename);
        final String parent = file.getParent();
        if (parent != null) {
            File unit = new File(parent);
            if (!unit.exists()) {
                unit.mkdirs();
            }
        }
    }

    public static byte[] convertIntToByteArray(int value, int numberOfBytes) {
        byte b[] = new byte[numberOfBytes];
        int i, shift;
        for (i = 0, shift = (b.length - 1) * 8; i < b.length; i++, shift -= 8) {
            b[i] = (byte) (0xFF & (value >> shift));
        }
        return b;
    }
}

Related

1. SaveFileFromInputStream(InputStream in, String fileName, String path)
2. SaveFileFromInputStream(InputStream stream, String path, String filename)
3. saveInFile(String filename, String content, String charsetName)
4. saveInputStream(InputStream _input_stream, File _file)
5. saveInputStream(InputStream is, String filePath)
6. saveIntArrayToFile(int[] array, File file)
7. saveKeyToFile(String key)
8. saveLongList(String file, Collection c, boolean append)
9. saveProxyClass(String path, String proxyClassName, Class[] interfaces)