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 IOException {

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

    System.out.println((char) lnis.read());
    System.out.println((char) lnis.read());

    lnis.mark(0);//w  ww .  j  a v  a  2s. co  m
    System.out.println("mark() invoked");
    System.out.println((char) lnis.read());
    System.out.println((char) lnis.read());

    if (lnis.markSupported()) {
        lnis.reset();
        System.out.println("reset() invoked");
        System.out.println((char) lnis.read());
        System.out.println((char) lnis.read());
    }

}

From source file:MainClass.java

public static void main(String args[]) {
    try {//from   w  w  w . j  av  a2  s  .  co m

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

        // Create a data input stream
        DataInputStream dis = new DataInputStream(fis);

        // Read and display data
        System.out.println(dis.readBoolean());
        System.out.println(dis.readByte());
        System.out.println(dis.readChar());
        System.out.println(dis.readDouble());
        System.out.println(dis.readFloat());
        System.out.println(dis.readInt());
        System.out.println(dis.readLong());
        System.out.println(dis.readShort());

        // Close file input stream
        fis.close();
    } catch (Exception e) {
        System.out.println("Exception: " + e);
    }
}

From source file:Main.java

public static void main(String[] args) {
    String srcFile = "test.txt";
    try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(srcFile))) {
        // Read one byte at a time and display it
        byte byteData;
        while ((byteData = (byte) bis.read()) != -1) {
            System.out.print((char) byteData);
        }/* w ww .j av a 2 s . c o m*/
    } catch (Exception e2) {
        e2.printStackTrace();
    }
}

From source file:Main.java

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

    int i = 0;//from   www. j  a v  a 2  s  . c o  m

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

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

        // print
        System.out.println("Character Read: " + c);
    }
    is.close();
}

From source file:Main.java

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

    int i;/*from   w  ww .  ja  v  a2  s  .  c o m*/

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

    while ((i = isr.read()) != -1) {
        char c = (char) i;
        System.out.println("Character read: " + c);
        // true if the next read is guaranteed
        boolean bool = isr.ready();

        System.out.println("Ready to read: " + bool);
    }
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    FileInputStream fr = new FileInputStream("sdo.cer");
    CertificateFactory cf = CertificateFactory.getInstance("X509");
    X509Certificate c = (X509Certificate) cf.generateCertificate(fr);
    System.out.println("\tCertificate for: " + c.getSubjectDN());
    System.out.println("\tCertificate issued by: " + c.getIssuerDN());
    System.out.println("\tThe certificate is valid from " + c.getNotBefore() + " to " + c.getNotAfter());
    System.out.println("\tCertificate SN# " + c.getSerialNumber());
    System.out.println("\tGenerated with " + c.getSigAlgName());
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream("infilename"), "UTF8"));
    String str = in.readLine();/*from  ww w.ja v a2  s  . c  om*/
    System.out.println(str);
}

From source file:Main.java

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

    int i;/*from   ww  w.  j a  va 2 s.  c  om*/
    FileInputStream fis = new FileInputStream("C:/test.txt");
    LineNumberInputStream lnis = new LineNumberInputStream(fis);

    while ((i = lnis.read()) != -1) {
        char c = (char) i;

        System.out.println(c);

        lnis.skip(1);
    }

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    InputStream is = new FileInputStream("c:/test.txt");

    InputStreamReader isr = new InputStreamReader(is);

    BufferedReader br = new BufferedReader(isr);

    br.close();//from  w  ww.  j  a  v  a2 s  .  co  m

    // creates error
    br.read();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    InputStream is = new FileInputStream("c:/test.txt");

    InputStreamReader isr = new InputStreamReader(is);

    BufferedReader br = new BufferedReader(isr);

    int value = 0;
    while ((value = br.read()) != -1) {
        char c = (char) value;
        System.out.println(c);//www  .  j a va 2  s.  com
    }
}