Example usage for java.io FileInputStream read

Introduction

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

Prototype

public int read() throws IOException 

Source Link

Document

Reads a byte of data from this input stream.

Usage

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;//w  ww . j  a  va  2 s  .c o m
            break;
        }
        i1 = fis1.read();
        i2 = fis2.read();
    }
    fis1.close();
    fis2.close();
    System.out.println(areFilesIdentical);
}

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From source file:Main.java

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

    byte b = 66;/*from   w  w w  . j a  v  a2s. c o m*/
    int i = 0;
    FileOutputStream fos = new FileOutputStream(new File("C://test1.txt"));

    fos.write(b);

    fos.flush();

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

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

        System.out.print(c);
    }
    fos.close();
    fis.close();
}

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From source file:Main.java

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

    byte[] b = { 65, 66, 67, 68, 69 };
    int i = 0;/*from  w w w.  j a  v  a 2 s  . c  om*/

    FileOutputStream fos = new FileOutputStream("C://test.txt");

    // writes byte to the output stream
    fos.write(b, 2, 3);

    // flushes the content to the underlying stream
    fos.flush();

    // create new file input stream
    FileInputStream fis = new FileInputStream("C://test.txt");

    // read till the end of the file
    while ((i = fis.read()) != -1) {
        // convert integer to character
        char c = (char) i;
        System.out.print(c);
    }
}

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From source file:Main.java

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

    byte b = 66;//from w  w w . j av  a  2 s  .  c  o  m
    int i = 0;
    FileOutputStream fos = new FileOutputStream(FileDescriptor.out);

    fos.write(b);

    fos.flush();

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

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

        System.out.print(c);
    }
    fos.close();
    fis.close();
}

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From source file:Main.java

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

    int i = 0;//from w  w  w  .  j  a  v a  2 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();
}

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From source file:CopyBytes.java

public static void main(String[] args) throws IOException {
    File inputFile = new File("input.txt");
    File outputFile = new File("output.txt");

    FileInputStream in = new FileInputStream(inputFile);
    FileOutputStream out = new FileOutputStream(outputFile);
    int c;/*from w  w w.  j a v a 2 s .c o  m*/

    while ((c = in.read()) != -1)
        out.write(c);

    in.close();
    out.close();
}

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From source file:Main.java

public static void main(String[] args) {
    File file = new File(args[0]);
    if (!file.exists()) {
        System.out.println(args[0] + " does not exist.");
        return;/*from www  .  j  av a2 s  .  c  om*/
    }
    if (!(file.isFile() && file.canRead())) {
        System.out.println(file.getName() + " cannot be read from.");
        return;
    }
    try {
        FileInputStream fis = new FileInputStream(file);
        char current;
        while (fis.available() > 0) {
            current = (char) fis.read();
            System.out.print(current);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {
    boolean areFilesIdentical = true;
    File file1 = new File("c:\\file1.txt");
    File file2 = new File("c:\\file2.txt");
    if (!file1.exists() || !file2.exists()) {
        System.out.println("One or both files do not exist");
        System.out.println(false);
    }/*from   w  w w.  jav a 2 s  .  co m*/
    System.out.println("length:" + file1.length());
    if (file1.length() != file2.length()) {
        System.out.println("lengths not equal");
        System.out.println(false);
    }
    try {
        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;
                break;
            }
            i1 = fis1.read();
            i2 = fis2.read();
        }
        fis1.close();
        fis2.close();
    } catch (IOException e) {
        System.out.println("IO exception");
        areFilesIdentical = false;
    }
    System.out.println(areFilesIdentical);
}

---

From source file:Main.java

public static void main(String[] args) throws IOException {
    FileInputStream fis = new FileInputStream("C://test.txt");

    // skip bytes from file input stream
    fis.skip(4);//from w  w  w .  j av a2 s.c  o  m

    // read bytes from this stream
    int i = fis.read();

    // converts integer to character
    char c = (char) i;
    System.out.print("Character read: " + c);
}

---

From source file:Main.java

public static void main(String[] args) {
    boolean areFilesIdentical = true;
    File file1 = new File("c:\\file1.txt");
    File file2 = new File("c:\\file2.txt");

    if (!file1.exists() || !file2.exists()) {
        System.out.println("One or both files do not exist");
        System.out.println(false);
    }//from w  ww  .j  a  v  a  2s .com

    System.out.println("length:" + file1.length());
    if (file1.length() != file2.length()) {
        System.out.println("lengths not equal");
        System.out.println(false);
    }

    try {
        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;
                break;
            }
            i1 = fis1.read();
            i2 = fis2.read();
        }
        fis1.close();
        fis2.close();
    } catch (IOException e) {
        System.out.println("IO exception");
        areFilesIdentical = false;
    }
    System.out.println(areFilesIdentical);
}

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