Example usage for java.io FileInputStream FileInputStream

Introduction

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

Prototype

public FileInputStream(FileDescriptor fdObj)

Source Link

Document

Creates a FileInputStream by using the file descriptor fdObj, which represents an existing connection to an actual file in the file system.

Usage

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 . j a  v  a 2s. com
    }
    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) {
    try {//ww  w.  java2  s .c  o  m

        OutputStream os = new FileOutputStream("test.txt");

        InputStream is = new FileInputStream("test.txt");

        os.write(70);
        os.write(71);

        for (int i = 0; i < 2; i++) {
            System.out.print((char) is.read());
        }
        os.close();
        is.close();

    } catch (Exception ex) {
        ex.printStackTrace();
    }

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    ZipInputStream zipinputstream = new ZipInputStream(new FileInputStream("filename"));
    ZipEntry zipentry = zipinputstream.getNextEntry();
    while (zipentry != null) {
        String entryName = zipentry.getName();
        File newFile = new File(entryName);
        String directory = newFile.getParent();
        if (directory == null) {
            if (newFile.isDirectory())
                break;
        }/*from   www  .  j ava 2s  .  com*/
        RandomAccessFile rf = new RandomAccessFile(entryName, "r");
        String line;
        if ((line = rf.readLine()) != null) {
            System.out.println(line);
        }
        rf.close();
        zipinputstream.closeEntry();
        zipentry = zipinputstream.getNextEntry();
    }
    zipinputstream.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
        XMLDecoder decoder = new XMLDecoder(new BufferedInputStream(new FileInputStream("Bean.xml")));
        Bean bean = (Bean) decoder.readObject();
        decoder.close();/*from w  w w .ja v  a2s . co m*/
        System.out.println("ID = " + bean.getId());
    }

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    File aFile = new File("charData.xml");
    FileInputStream inFile = null;

    inFile = new FileInputStream(aFile);

    FileChannel inChannel = inFile.getChannel();
    ByteBuffer buf = ByteBuffer.allocate(48);

    while (inChannel.read(buf) != -1) {
        System.out.println("String read: " + ((ByteBuffer) (buf.flip())).asCharBuffer().get(0));
        buf.clear();//from  w ww.  j  ava  2  s .  c  om
    }
    inFile.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int sChunk = 8192;

    String zipname = "a.txt.gz";
    String source = "a.txt";
    FileInputStream in = new FileInputStream(zipname);
    GZIPInputStream zipin = new GZIPInputStream(in);
    byte[] buffer = new byte[sChunk];
    FileOutputStream out = new FileOutputStream(source);
    int length;/*from  w ww  .j  a  v  a 2 s.c  om*/
    while ((length = zipin.read(buffer, 0, sChunk)) != -1)
        out.write(buffer, 0, length);
    out.close();
    zipin.close();
}

From source file:MainClass.java

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

    CertificateFactory certFactory = CertificateFactory.getInstance("X.509");

    FileInputStream fis = new FileInputStream("a.dat");

    Certificate cert = certFactory.generateCertificate(fis);
    fis.close();//from www . j  a  v a 2s .c  om

    System.out.println(cert);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    boolean areFilesIdentical = true;
    File file1 = new File("c:\\file1.txt");
    File file2 = new File("c:\\file2.txt");
    FileInputStream fis1 = new FileInputStream(file1);
    FileInputStream fis2 = new FileInputStream(file2);
    int i1 = fis1.read();
    int i2 = fis2.read();
    while (i1 != -1) {
        if (i1 != i2) {
            areFilesIdentical = false;//from   w  w  w.  jav a 2  s.  c  om
            break;
        }
        i1 = fis1.read();
        i2 = fis2.read();
    }
    fis1.close();
    fis2.close();
    System.out.println(areFilesIdentical);
}

From source file:Main.java

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

    int i = 0;//from  w w w.j  a  va  2  s  .c om
    char c;

    // create input streams
    InputStream is = new FileInputStream("C://test.txt");
    FilterInputStream fis = new BufferedInputStream(is);

    // read till the end of the stream
    while ((i = fis.read()) != -1) {
        // converts integer to character
        c = (char) i;

        System.out.println("Character read: " + c);
    }

}

From source file:Main.java

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

    FileInputStream fin = null;/* www.  java2  s. 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();
}