Example usage for java.io FileReader FileReader

Introduction

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

Prototype

public FileReader(FileDescriptor fd)

Source Link

Document

Creates a new FileReader , given the FileDescriptor to read, using the platform's java.nio.charset.Charset#defaultCharset() default charset .

Usage

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    FileReader fr = new FileReader(args[0]);
    BufferedReader br = new BufferedReader(fr);
    StreamTokenizer st = new StreamTokenizer(br);
    while (st.nextToken() != StreamTokenizer.TT_EOF) {
        switch (st.ttype) {
        case StreamTokenizer.TT_WORD:
            System.out.println(st.lineno() + ") " + st.sval);
            break;
        case StreamTokenizer.TT_NUMBER:
            System.out.println(st.lineno() + ") " + st.nval);
            break;
        default://ww w . j  a va  2  s. c o  m
            System.out.println(st.lineno() + ") " + (char) st.ttype);
        }
    }
    fr.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File f = new File("hello.txt");
    FileReader fr = new FileReader(f);

    char[] c = new char[(int) f.length()];
    char[] cnew = new char[(int) f.length()];
    StringBuffer sbuf = new StringBuffer();
    fr.read(c, 0, (int) f.length());

    int len = (int) f.length();

    for (int i = 0, j = len - 1; i < len; i++, j--) {
        cnew[i] = c[j];/*from  w  w w. jav  a2s  .co  m*/
        sbuf.append(cnew[i]);
    }

    System.out.println(sbuf.toString());
    fr.close();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File f = new File("Main.java");
    FileReader fr = new FileReader(f);

    char[] c = new char[(int) f.length()];
    char[] cnew = new char[(int) f.length()];
    StringBuffer sbuf = new StringBuffer();
    fr.read(c, 0, (int) f.length());

    int len = (int) f.length();

    for (int i = 0, j = len - 1; i < len; i++, j--) {
        cnew[i] = c[j];/*from w  ww.ja va  2  s.  co m*/
        sbuf.append(cnew[i]);
    }

    System.out.println(sbuf.toString());
    fr.close();

}

From source file:MainClass.java

public static void main(String[] a) {

    FileReader fr;//from w  w  w. j  a  v  a 2 s  . com
    try {
        fr = new FileReader(new File("yourFile.txt"));
        BufferedReader br = new BufferedReader(fr);
        String line = br.readLine();
        while (line != null) {
            System.out.println(line);
            line = br.readLine();
        }
        br.close();

    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

From source file:Main.java

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

    String thisLine = null;/*from   w  ww . j a v  a 2  s  .  c o  m*/

    BufferedReader br = new BufferedReader(new FileReader("c:/test.txt"));
    while ((thisLine = br.readLine()) != null) {
        System.out.println(thisLine);
    }

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String srcFile = "test.txt";
    BufferedReader br = new BufferedReader(new FileReader(srcFile));
    String text = null;// www .  j a v a2 s  .  com

    while ((text = br.readLine()) != null) {
        System.out.println(text);
    }
    br.close();
}

From source file:SourceReader.java

public static void main(String[] arguments) {
    try {/*from   w w w  .  ja  v  a  2  s  .c  o m*/
        FileReader file = new FileReader("SourceReader.java");
        BufferedReader buff = new BufferedReader(file);
        boolean eof = false;
        while (!eof) {
            String line = buff.readLine();
            if (line == null)
                eof = true;
            else
                System.out.println(line);
        }
        buff.close();
    } catch (IOException e) {
        System.out.println("Error - " + e.toString());
    }
}

From source file:FileReaderWriterExample.java

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

    Reader r = new FileReader("in.txt");
    Writer w = new FileWriter("out.txt");
    int c;//from w w  w  . j  a  v a 2 s . com
    while ((c = r.read()) != -1) {
        System.out.print((char) c);
        w.write(c);
    }
    r.close();
    w.close();
}

From source file:ExtractTokens.java

public static void main(String[] args) throws Exception {
    FileReader fr = null;/*from   w  ww.java 2 s .c om*/

    fr = new FileReader(args[0]);

    StreamTokenizer st = new StreamTokenizer(fr);

    while (st.nextToken() != StreamTokenizer.TT_EOF) {
        switch (st.ttype) {
        case '"':
            System.out.println("String = " + st.sval);
            break;

        case StreamTokenizer.TT_EOL:
            System.out.println("End-of-line");
            break;

        case StreamTokenizer.TT_NUMBER:
            System.out.println("Number = " + st.nval);
            break;

        case StreamTokenizer.TT_WORD:
            System.out.println("Word = " + st.sval);
            break;

        default:
            System.out.println("Other = " + (char) st.ttype);
        }
    }
}

From source file:Main.java

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

    FileReader fr = new FileReader("C:/test.txt");
    LineNumberReader lnr = new LineNumberReader(fr);

    // reads and prints data from reader
    System.out.println((char) lnr.read());
    System.out.println((char) lnr.read());

    // mark invoked at this position
    lnr.mark(0);/*from  www.ja v  a2  s  . c  o  m*/
    System.out.println("mark() invoked");
    System.out.println((char) lnr.read());
    System.out.println((char) lnr.read());

    // if this reader supports mark() an reset()
    if (lnr.markSupported()) {
        // reset() repositioned the stream to the mark
        lnr.reset();
        System.out.println("reset() invoked");
        System.out.println((char) lnr.read());
        System.out.println((char) lnr.read());
    }
    lnr.close();
}