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[] args) throws Exception {
    Scanner scanner = new Scanner(new FileInputStream("c:/text.txt"), StandardCharsets.UTF_8.name());
    System.out.println(scanner.nextLine());

    scanner.close();//from ww  w .j ava  2s. c o m
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileInputStream fin = new FileInputStream("a.gz");
    GZIPInputStream gzin = new GZIPInputStream(fin);
    FileOutputStream fout = new FileOutputStream("a.dat");
    for (int c = gzin.read(); c != -1; c = gzin.read()) {
        fout.write(c);/* www  .ja v  a2s. c o m*/
    }
    fout.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File file = new File("C:/String.txt");
    FileInputStream fin = new FileInputStream(file);

    int ch;//  w w  w .j  a v a2 s .c o  m
    // skip first 10 bytes
    fin.skip(10);
    while ((ch = fin.read()) != -1) {
        System.out.print((char) ch);
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    FileInputStream is = new FileInputStream("yourfile" + ".keystore");
    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    String password = "my-keystore-password";
    keystore.load(is, password.toCharArray());

    Enumeration e = keystore.aliases();
    for (; e.hasMoreElements();) {
        String alias = (String) e.nextElement();

        boolean b = keystore.isKeyEntry(alias);

        b = keystore.isCertificateEntry(alias);
    }//from   w w  w.  j  a va  2 s . c om
    is.close();
}

From source file:Main.java

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

    FileInputStream fis = new FileInputStream("C:/test.txt");
    LineNumberInputStream lnis = new LineNumberInputStream(fis);

    lnis.setLineNumber(100);//from www  .  j  a  v  a2 s. co  m

    int i = lnis.getLineNumber();

    System.out.print("Line number: " + i);

}

From source file:Main.java

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

    InputStream inStream = new FileInputStream("c:/test.txt");

    BufferedInputStream bis = new BufferedInputStream(inStream);

    // read until a single byte is available
    while (bis.available() > 0) {
        // read the byte and convert the integer to character
        char c = (char) bis.read();

        System.out.println(c);// w  w  w .ja  v a  2 s .co m
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileInputStream fis = new FileInputStream("C:/MyZip.zip");
    ZipInputStream zis = new ZipInputStream(fis);
    ZipEntry ze;/*  w w w . j  av a  2  s . com*/
    while ((ze = zis.getNextEntry()) != null) {
        System.out.println(ze.getName());
        zis.closeEntry();
    }

    zis.close();

}

From source file:Main.java

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

    FileChannel sourceChannel = new FileInputStream("sourceFile").getChannel();
    FileChannel sinkChannel = new FileOutputStream("newFile").getChannel();

    // Copy source file contents to the sink file
    sourceChannel.transferTo(0, sourceChannel.size(), sinkChannel);
}

From source file:Main.java

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

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

    // input stream is converted to buffered input stream
    BufferedInputStream bis = new BufferedInputStream(is);

    // read until a single byte is available
    while (bis.available() > 0) {
        // skip single byte from the stream
        bis.skip(1);/*from w  w  w . j a  v  a 2 s.  c  o  m*/

        // read next available byte and convert to char
        char c = (char) bis.read();
        System.out.print(c);
    }
}

From source file:Main.java

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

    FileInputStream fis = new FileInputStream("C:/test.txt");
    InputStreamReader isr = new InputStreamReader(fis);

    // input stream reader is closed
    isr.close();/* w w w.  ja  v  a 2 s  .  co m*/
    System.out.print("close() invoked");

    // read() called after closed method
    int i = isr.read();
    char c = (char) i;
    System.out.println(c);

}