Example usage for java.io BufferedReader BufferedReader

Introduction

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

Prototype

public BufferedReader(Reader in)

Source Link

Document

Creates a buffering character-input stream that uses a default-sized input buffer.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    File f = new File("C:\\test.txt");
    FileReader fr = new FileReader(f);
    BufferedReader br = new BufferedReader(fr);

    StringBuffer sb = new StringBuffer();
    String eachLine = br.readLine();

    while (eachLine != null) {
        sb.append(eachLine);//from w  w  w .  j a v  a  2  s.  c  om
        sb.append("\n");
        eachLine = br.readLine();
    }
    System.out.println(sb.toString());
}

From source file:Main.java

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

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    BufferedReader br = new BufferedReader(sr);

    // reads and prints BufferedReader
    System.out.println((char) br.read());
    System.out.println((char) br.read());

    // mark invoked at this position
    br.mark(0);//from ww w . j  a  v  a 2  s  .  c om
    System.out.println("mark() invoked");
    System.out.println((char) br.read());
    System.out.println((char) br.read());

    // reset() repositioned the stream to the mark
    br.reset();
    System.out.println("reset() invoked");
    System.out.println((char) br.read());
    System.out.println((char) br.read());

}

From source file:Main.java

public static void main(String[] av) throws IOException {
    StreamTokenizer tf = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
    int i;/*  w ww.  j  av a  2s .  com*/

    while ((i = tf.nextToken()) != StreamTokenizer.TT_EOF) {
        switch (i) {
        case StreamTokenizer.TT_EOF:
            System.out.println("End of file");
            break;
        case StreamTokenizer.TT_EOL:
            System.out.println("End of line");
            break;
        case StreamTokenizer.TT_NUMBER:
            System.out.println("Number " + tf.nval);
            break;
        case StreamTokenizer.TT_WORD:
            System.out.println("Word, length " + tf.sval.length() + "->" + tf.sval);
            break;
        default:
            System.out.println("What is it? i = " + i);
        }
    }

}

From source file:StreamTokenApp.java

public static void main(String args[]) throws IOException {
    BufferedReader inData = new BufferedReader(new InputStreamReader(System.in));
    StreamTokenizer inStream = new StreamTokenizer(inData);
    inStream.commentChar('#');
    boolean eof = false;
    do {//from   ww w .j  av  a 2s.com
        int token = inStream.nextToken();
        switch (token) {
        case inStream.TT_EOF:
            System.out.println("EOF encountered.");
            eof = true;
            break;
        case inStream.TT_EOL:
            System.out.println("EOL encountered.");
            break;
        case inStream.TT_WORD:
            System.out.println("Word: " + inStream.sval);
            break;
        case inStream.TT_NUMBER:
            System.out.println("Number: " + inStream.nval);
            break;
        default:
            System.out.println((char) token + " encountered.");
            if (token == '!')
                eof = true;
        }
    } while (!eof);
}

From source file:MainClass.java

public static void main(String[] a) {

    FileReader fr;/* 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:SourceReader.java

public static void main(String[] arguments) {
    try {//  w w w . ja v a 2  s.co 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:MainClass.java

public static void main(String[] av) throws IOException {
    StreamTokenizer tf = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
    String s = null;/*from  w  w w  .j a  v  a 2 s. com*/
    int i;

    while ((i = tf.nextToken()) != StreamTokenizer.TT_EOF) {
        switch (i) {
        case StreamTokenizer.TT_EOF:
            System.out.println("End of file");
            break;
        case StreamTokenizer.TT_EOL:
            System.out.println("End of line");
            break;
        case StreamTokenizer.TT_NUMBER:
            System.out.println("Number " + tf.nval);
            break;
        case StreamTokenizer.TT_WORD:
            System.out.println("Word, length " + tf.sval.length() + "->" + tf.sval);
            break;
        default:
            System.out.println("What is it? i = " + i);
        }
    }

}

From source file:Main.java

public static void main(String args[]) {

    try {//from  w w w .j a va 2  s .  c om
        FileReader fr = new FileReader(args[0]);
        BufferedReader br = new BufferedReader(fr);
        StreamTokenizer st = new StreamTokenizer(br);

        st.ordinaryChar('.');

        st.wordChars('\'', '\'');

        while (st.nextToken() != StreamTokenizer.TT_EOL) {
            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:
                System.out.println(st.lineno() + ") " + (char) st.ttype);
            }
        }

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

From source file:TabFilter.java

public static void main(String args[]) throws Exception {
    FileReader fr = new FileReader(args[0]);
    BufferedReader br = new BufferedReader(fr);

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

    // Convert tab to space characters
    String s;/*w ww. j  ava2s.c  o m*/
    while ((s = br.readLine()) != null) {
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            if (c == '\t')
                c = ' ';
            bw.write(c);
        }
    }

    bw.flush();
    fr.close();
    fw.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    System.out.print("Enter your name: ");
    InputStreamReader reader = new InputStreamReader(System.in);
    BufferedReader in = new BufferedReader(reader);
    String name = in.readLine();//from   w  ww.  j av  a2  s . com
    System.out.println("Hello, " + name + ". Enter three ints...");
    int[] values = new int[3];
    double sum = 0.0;
    for (int i = 0; i < values.length; i++) {
        System.out.print("Number " + (i + 1) + ": ");
        String temp = in.readLine();
        values[i] = Integer.parseInt(temp);
        sum += values[i];
    }
    System.out.println("The average equals " + sum / values.length);
}