Example usage for java.io FileReader read

Introduction

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

Prototype

public int read() throws IOException

Source Link

Document

Reads a single character.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileReader fileReader = new FileReader("c:/abc.txt");
    System.out.println(fileReader.read());
    fileReader.close();//from   w w w  . j a va 2s . c  om

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileReader fileReader = new FileReader(new File("c:/abc.txt"));
    System.out.println(fileReader.read());
    fileReader.close();//w  ww  .  j av  a  2  s  . co m

}

From source file:Main.java

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

    int ch;/*from www . j  a  v  a  2s. com*/
    do {
        ch = fr.read();
        if (ch != -1)
            System.out.println((char) ch);
    } while (ch != -1);
    fr.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileReader fileReader = new FileReader(new FileOutputStream("c:/abc.txt").getFD());
    System.out.println(fileReader.read());
    fileReader.close();/*from  w w  w.  j  a v a  2 s.c  om*/

}

From source file:DigitCounter.java

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

    // Create a file reader
    FileReader fr = new FileReader(args[0]);

    // Read characters
    int i;/*from  ww  w.  j ava2s.  c  o  m*/
    while ((i = fr.read()) != -1) {
        System.out.println((char) i);

    }

    // Close file reader
    fr.close();
}

From source file:MainClass.java

public static void main(String args[]) {
    try {// w  ww.  j  a  v a 2 s  .c o m
        int counts[] = new int[10];
        FileReader fr = new FileReader(args[0]);

        int i;
        while ((i = fr.read()) != -1) {
            char c = (char) i;
            int k = c - '0';
            if (k >= 0 && k < 10)
                ++counts[k];
        }

        // Display digit counts
        for (int j = 0; j < 10; j++) {
            char c = (char) ('0' + j);
            System.out.print(c + "=");
            System.out.print(counts[j] + "; ");
        }

        fr.close();
    } catch (Exception e) {
        System.out.println("Exception: " + e);
    }
}

From source file:MainClass.java

public static void main(String args[]) {

    try {/*from   w  w  w  .  ja  v  a  2  s  .com*/

        FileReader fr = new FileReader(args[0]);

        FileWriter fw = new FileWriter(args[1]);

        int i;
        while ((i = fr.read()) != -1) {
            fw.write(i);
        }
        fw.close();

        fr.close();
    } catch (Exception e) {
        System.out.println("Exception: " + e);
    }
}

From source file:Copy.java

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

    FileReader in = new FileReader(inputFile);
    FileWriter out = new FileWriter(outputFile);
    int c;/*w w  w. java  2 s . com*/

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

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

From source file:WordCount.java

public static void main(String args[]) throws Exception {
    int words = 0;
    int lines = 0;
    int chars = 0;

    FileReader fr = new FileReader("yourFile.txt");
    int c = 0;//from w  w  w  .j  a  v  a  2  s.c o  m
    boolean lastWhite = true;
    String whiteSpace = " \t\n\r";

    while ((c = fr.read()) != -1) {
        chars++;
        if (c == '\n') {
            lines++;
        }
        int index = whiteSpace.indexOf(c);
        if (index == -1) {
            if (lastWhite == true) {
                ++words;
            }
            lastWhite = false;
        } else {
            lastWhite = true;
        }
    }
    if (chars != 0) {
        ++lines;
    }
}

From source file:FileCopy.java

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

    FileReader fr = new FileReader(args[0]);

    // Create a file writer
    FileWriter fw = new FileWriter(args[1]);

    // Read and copy characters
    int i;/*from   ww w.  j ava  2 s  . c  om*/
    while ((i = fr.read()) != -1) {
        fw.write(i);
    }
    fw.close();

    fr.close();
}