Example usage for java.io FileOutputStream write

Introduction

In this page you can find the example usage for java.io FileOutputStream write.

Prototype

public void write(byte b[], int off, int len) throws IOException

Source Link

Document

Writes len bytes from the specified byte array starting at offset off to this file output stream.

Usage

From source file:Main.java

public static void CopyFile(String source, String destination) throws IOException {
    FileInputStream fin = new FileInputStream(source);
    FileOutputStream fout = new FileOutputStream(destination);

    byte[] b = new byte[1024 * 1024];
    int noOfBytes = 0;

    while ((noOfBytes = fin.read(b)) != -1) {
        fout.write(b, 0, noOfBytes);
    }//from  ww  w.  jav  a  2  s  .c  o  m

    fin.close();
    fout.close();
}

From source file:Main.java

public static void unZip(String zipFile, String outputFolder) {
    byte[] buffer = new byte[BUFFER_SIZE];

    try {/*from w w w .  ja v  a 2 s .  c  om*/
        File folder = new File(outputFolder);
        if (!folder.exists()) {
            folder.mkdir();
        }

        ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFile));
        ZipEntry ze = zis.getNextEntry();

        while (ze != null) {
            String fileName = ze.getName();
            File newFile = new File(outputFolder + File.separator + fileName);

            System.out.println("file unzip : " + newFile.getAbsoluteFile());
            if (ze.isDirectory()) {
                newFile.mkdirs();
            } else {
                FileOutputStream fos = new FileOutputStream(newFile);
                int len;
                while ((len = zis.read(buffer)) > 0) {
                    fos.write(buffer, 0, len);
                }
                fos.close();
            }
            ze = zis.getNextEntry();
        }
        zis.closeEntry();
        zis.close();
        System.out.println("Done");
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

From source file:Main.java

/**
 * Reads the in_stream and extracts them to out_dir.
 * @param in_stream Input stream corresponding to the zip file.
 * @param out_dir Output directory for the zip file contents.
 * @throws IOException//www  .j a  va2  s.  c o  m
 */
public static void zipExtract(InputStream in_stream, File out_dir) throws IOException {
    if (!out_dir.exists()) {
        if (!out_dir.mkdirs()) {
            throw new IOException("Could not create output directory: " + out_dir.getAbsolutePath());
        }
    }
    ZipInputStream zis = new ZipInputStream(in_stream);
    ZipEntry ze;
    byte[] buffer = new byte[BUFFER_SIZE];
    int count;
    while ((ze = zis.getNextEntry()) != null) {
        if (ze.isDirectory()) {
            File fmd = new File(out_dir.getAbsolutePath() + "/" + ze.getName());
            fmd.mkdirs();
            continue;
        }
        FileOutputStream fout = new FileOutputStream(out_dir.getAbsolutePath() + "/" + ze.getName());
        while ((count = zis.read(buffer)) != -1) {
            fout.write(buffer, 0, count);
        }

        fout.close();
        zis.closeEntry();
    }
    zis.close();
}

From source file:Main.java

private static void movefile(String srcPath, String dstPath) throws IOException {
    File srcFile = new File(srcPath);
    File dstFile = new File(dstPath);

    if (srcFile.exists()) {
        FileInputStream inputStream = new FileInputStream(srcFile);
        FileOutputStream outputStream = new FileOutputStream(dstFile);
        byte[] bytes = new byte[1024];
        int reads = 0;
        while ((reads = inputStream.read(bytes)) != -1) {
            outputStream.write(bytes, 0, reads);
        }/*from  ww w.j av  a  2s.  c  o  m*/
        srcFile.delete();
    }

}

From source file:Main.java

/**
 * Copy file a to b and remove a. // ww  w  . j a  v  a2s . co  m
 * @param source source file
 * @param destination destination file
 * @return true if success, false if fail.
 */
public static boolean move(File source, File destination) {
    try {
        FileInputStream in = new FileInputStream(source);
        FileOutputStream out = new FileOutputStream(destination);
        byte[] buffer = new byte[1024 * 1024];
        int size;
        while ((size = in.read(buffer)) >= 0) {
            out.write(buffer, 0, size);
        }
        in.close();
        out.flush();
        out.close();
        source.delete();
        return true;
    } catch (Exception exp) {
        exp.printStackTrace();
    }
    return false;
}

From source file:Main.java

/**
 * Copy file from oldPath to newPath/*from w  ww. j  a va2  s.co  m*/
 *
 * @param oldPath
 * @param newPath
 */
public static void copyFile(String oldPath, String newPath) {
    try {
        int byteread = 0;
        File oldfile = new File(oldPath);
        File newfile = new File(newPath);
        if (newfile.exists()) {
            newfile.delete();
        }
        newfile.createNewFile();
        if (oldfile.exists()) {
            FileInputStream inStream = new FileInputStream(oldPath);
            FileOutputStream outStream = new FileOutputStream(newPath);
            byte[] buffer = new byte[1024];
            while ((byteread = inStream.read(buffer)) > 0) {
                outStream.write(buffer, 0, byteread);
            }
            inStream.close();
            outStream.close();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void copyFile(File fromFile, File toFile, Boolean rewrite) {
    if (!fromFile.exists()) {
        return;//  w w w  . ja  va  2s.  co  m
    }
    if (!fromFile.isFile()) {
        return;
    }
    if (!fromFile.canRead()) {
        return;
    }
    if (!toFile.getParentFile().exists()) {
        toFile.getParentFile().mkdirs();
    }
    if (toFile.exists() && rewrite) {
        toFile.delete();
    }

    try {
        java.io.FileInputStream fosfrom = new java.io.FileInputStream(fromFile);
        java.io.FileOutputStream fosto = new FileOutputStream(toFile);
        byte bt[] = new byte[1024];
        int c;
        while ((c = fosfrom.read(bt)) > 0) {
            fosto.write(bt, 0, c);
        }
        fosfrom.close();
        fosto.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

From source file:Main.java

public static boolean writeStringToFile(String fileName, String content) {
    File file = new File(fileName);
    if (content == null)
        return false;

    if (!file.exists()) {
        String filepath = file.getAbsolutePath();
        String path = getParentPath(filepath);
        File dir = new File(path);
        dir.mkdirs();// www.  jav a2s .  co  m
    }
    FileOutputStream fos = null;
    byte[] data;
    try {
        fos = new FileOutputStream(file, false);
        data = content.getBytes();
        fos.write(data, 0, data.length);
        fos.flush();
        return true;
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            if (null != fos) {
                fos.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        data = null;
        fos = null;
    }
    return false;
}

From source file:Main.java

public static void unZip(InputStream zipFileIS, String outputFolder) throws IOException {

    byte[] buffer = new byte[1024];

    //create output directory is not exists
    File folder = new File(outputFolder);
    if (!folder.exists()) {
        folder.mkdir();/*w  w  w  .jav a  2 s . c  om*/
    }

    //get the zip file content
    ZipInputStream zis = new ZipInputStream(zipFileIS);
    //get the zipped file list entry
    ZipEntry ze = zis.getNextEntry();

    while (ze != null) {

        String fileName = ze.getName();
        File newFile = new File(outputFolder + File.separator + fileName);

        if (ze.isDirectory()) {
            newFile.mkdirs();
        } else {

            FileOutputStream fos = new FileOutputStream(newFile);

            int len;
            while ((len = zis.read(buffer)) > 0) {
                fos.write(buffer, 0, len);
            }

            fos.flush();
            fos.close();
        }
        ze = zis.getNextEntry();
    }

    zis.closeEntry();
    zis.close();
}

From source file:Main.java

public static void divideFile() throws IOException {
    String path = "F:/ar/";
    String base = "phoneAttribution";
    String ext = ".db";

    int split = 800 * 1024;
    byte[] buf = new byte[1024];
    int num = 1;/*from   www .  ja v  a2  s  . c  om*/

    File inFile = new File(path + base + ext);
    FileInputStream fis = new FileInputStream(inFile);
    while (true) {
        FileOutputStream fos = new FileOutputStream(new File(path + base + num + ext));
        for (int i = 0; i < split / buf.length; i++) {
            int read = fis.read(buf);
            fos.write(buf, 0, buf.length);
            if (read < buf.length) {
                fis.close();
                fos.close();
                return;
            }
        }
        fos.close();
        num++;
    }
}