Example usage for java.io File File

Introduction

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

Prototype

public File(URI uri)

Source Link

Document

Creates a new File instance by converting the given file: URI into an abstract pathname.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    BufferedImage bi = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
    ImageIO.write(bi, "png", new File("test.png"));
}

From source file:Main.java

public static void main(String[] arg) throws Throwable {
    File f = new File(arg[0]);
    InputStream in = new FileInputStream(f);

    byte[] buff = new byte[8000];

    int bytesRead = 0;

    ByteArrayOutputStream bao = new ByteArrayOutputStream();

    while ((bytesRead = in.read(buff)) != -1) {
        bao.write(buff, 0, bytesRead);// w ww  .ja  va 2 s.c  om
    }
    in.close();

    byte[] data = bao.toByteArray();

    ByteArrayInputStream bin = new ByteArrayInputStream(data);
    System.out.println(bin.available());
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    BufferedImage bsrc = ImageIO.read(new File("a.jpg"));
    BufferedImage bdest = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
    Graphics2D g = bdest.createGraphics();
    AffineTransform at = AffineTransform.getScaleInstance(2, 2);
    g.drawRenderedImage(bsrc, at);//from w  w w. j a va  2 s  .c o m
    ImageIO.write(bdest, "JPG", new File("b.jpg"));
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    AudioFileFormat fformat = AudioSystem.getAudioFileFormat(new File("audiofile"));

    fformat = AudioSystem.getAudioFileFormat(new URL("http://hostname/audiofile"));

    if (fformat.getType() == AudioFileFormat.Type.AIFC) {
    } else if (fformat.getType() == AudioFileFormat.Type.AIFF) {
    } else if (fformat.getType() == AudioFileFormat.Type.AU) {
    } else if (fformat.getType() == AudioFileFormat.Type.WAVE) {
    }/*from  w ww . j  av  a  2 s.  c o m*/
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer bbuf = ByteBuffer.allocate(100);
    File file = new File("filename");

    boolean append = false;

    FileChannel wChannel = new FileOutputStream(file, append).getChannel();

    wChannel.write(bbuf);/*from w w w  .java  2s.c om*/

    wChannel.close();
}

From source file:DirList.java

public static void main(String[] args) {
    System.out.print("\nEnter a path: ");
    String path = sc.nextLine();//from   w w w .ja  v a 2s  . c  o m
    File dir = new File(path);
    if (!dir.exists() || !dir.isDirectory())
        System.out.println("\nThat directory doesn't exist.");
    else {
        System.out.println("\nListing directory tree of:");
        System.out.println(dir.getPath());
        listDirectories(dir, "  ");
    }
}

From source file:MainClass.java

public static void main(String[] args) throws IOException {
    FileChannel fc = new RandomAccessFile(new File("temp.tmp"), "rw").getChannel();
    IntBuffer ib = fc.map(FileChannel.MapMode.READ_WRITE, 0, fc.size()).asIntBuffer();
    ib.put(0);// w ww. jav  a  2  s .c  o m
    for (int i = 1; i < 10; i++)
        ib.put(ib.get(i - 1));
    fc.close();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Socket socket = new Socket("localhost", 8000);
    File file = new File("C:/Users/abc/Desktop/image.jpg");
    FileInputStream fileInputStream = new FileInputStream(file);

    byte[] fileBytes = new byte[(int) file.length()];
    OutputStream outputStream = socket.getOutputStream();
    int content;// ww  w  .j  av  a2s.c  om
    while ((content = fileInputStream.read(fileBytes)) != -1) {
        outputStream.write(fileBytes, 0, (int) file.length());
    }

    System.out.println("file size is " + fileBytes.length);
    for (byte a : fileBytes) {
        System.out.println(a);
    }
    socket.close();
    fileInputStream.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {

    FileInputStream fin = null;/*from w  w w .  j  a v  a 2s . c  o m*/
    FileOutputStream fout = null;

    File file = new File("C:/myfile1.txt");

    fin = new FileInputStream(file);
    fout = new FileOutputStream("C:/myfile2.txt");

    byte[] buffer = new byte[1024];
    int bytesRead;
    while ((bytesRead = fin.read(buffer)) > 0) {
        fout.write(buffer, 0, bytesRead);
    }
    fin.close();
    fout.close();
}

From source file:MainClass.java

public static void main(String[] args) {
    File myDir = new File("C:/");
    // Define a filter for java source files beginning with F
    FilenameFilter select = new FileListFilter("F", "java");

    File[] contents = myDir.listFiles(select);

    if (contents != null) {
        System.out.println(//from   www .  ja  v  a 2 s  .c o m
                "\nThe " + contents.length + " matching items in the directory, " + myDir.getName() + ", are:");
        for (File file : contents) {
            System.out.println(file + " is a " + (file.isDirectory() ? "directory" : "file")
                    + " last modified on\n" + new Date(file.lastModified()));
        }
    } else {
        System.out.println(myDir.getName() + " is not a directory");
    }
    return;
}