Example usage for java.io LineNumberReader markSupported

Introduction

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

Prototype

public boolean markSupported() 

Source Link

Document

Tells whether this stream supports the mark() operation, which it does.

Usage

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 w  ww  .  ja  v a 2s.  c om*/
    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();
}

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From source file:Main.java

public static void main(String[] args) throws IOException {
    // create new reader
    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 ww  w . jav  a  2 s. c om
    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 reader to the mark
        lnr.reset();
        System.out.println("reset() invoked");
        System.out.println((char) lnr.read());
        System.out.println((char) lnr.read());
    }
    lnr.close();
}

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