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 {
    System.setIn(new FileInputStream("file.txt"));

    char ret = (char) System.in.read();

    System.out.println(ret);//from  w  w  w.  j  ava 2  s.com
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    FileInputStream fin = new FileInputStream("test.txt");
    int i;//from   w w w .j a va 2 s  .  c  o m
    do {
        i = fin.read();
        if (i != -1)
            System.out.printf("%02X ", i);
    } while (i != -1);
    fin.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    FileInputStream fin = new FileInputStream("text.txt");

    int len;/*  w w w . j  a v  a 2s .  c  o  m*/
    byte data[] = new byte[16];

    // Read bytes until EOF is encountered.
    do {
        len = fin.read(data);
        for (int j = 0; j < len; j++)
            System.out.printf("%02X ", data[j]);
    } while (len != -1);
}

From source file:FileInputStreamDemo.java

public static void main(String args[]) throws Exception {
    FileInputStream fis = new FileInputStream(args[0]);

    // Read and display data
    int i;//from w  w  w.  j av a2s.  co m
    while ((i = fis.read()) != -1) {
        System.out.println(i);
    }

    fis.close();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileInputStream fis = new FileInputStream("main.java");
    int i = 0;/*  w w w  . j  av a 2s.c  o m*/
    int count = 0;

    while ((i = fis.read()) != -1) {
        if (i != -1) {
            System.out.printf("%02X ", i);
            count++;
        }

        if (count == 16) {
            System.out.println("");
            count = 0;
        }
    }
    fis.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    FileInputStream file = null;//from  w  w w.  ja  v  a 2  s. c om
    file = new FileInputStream("main.java");
    byte x = (byte) file.read();
    System.out.println(x);
    file.close();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileInputStream fis = new FileInputStream("/home/username/data.txt");

    int i = 0;//w w w  .  j a  va2  s. c  om

    int count = 0;

    while ((i = fis.read()) != -1) {
        if (i != -1) {
            System.out.printf("%02X ", i);
            count++;
        }

        if (count == 16) {
            System.out.println("");
            count = 0;
        }
    }
    fis.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    FileInputStream is = new FileInputStream("your.keystore");

    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    keystore.load(is, "my-keystore-password".toCharArray());

    // Get certificate
    java.security.cert.Certificate cert = keystore.getCertificate("myalias");
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileInputStream fin = new FileInputStream("C:/Long.txt");
    DataInputStream din = new DataInputStream(fin);
    long l = din.readLong();
    System.out.println("long : " + l);
    din.close();//www  .  j av  a 2s  . c  o  m
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Scanner scanner = new Scanner(new FileInputStream("c:/text.txt"));
    System.out.println(scanner.nextLine());

    scanner.close();//from   w ww.j a  va  2 s  .  co  m
}