Example usage for java.io PushbackReader PushbackReader

Introduction

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

Prototype

public PushbackReader(Reader in, int size) 

Source Link

Document

Creates a new pushback reader with a pushback buffer of the given size.

Usage

From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    PushbackReader pr = new PushbackReader(sr, 20);

    try {//from ww  w  . j a  v  a  2  s  .co m
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }
        pr.mark(5);
        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    PushbackReader pr = new PushbackReader(sr, 20);

    try {//from  w w  w .j av a2  s  . c o  m
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }
        System.out.println("" + pr.markSupported());

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    PushbackReader pr = new PushbackReader(sr, 20);

    char cbuf[] = new char[5];

    try {/*w  w w  .j a va2  s  .  c  o m*/
        System.out.println(pr.read(cbuf));

        System.out.println(cbuf);

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {
    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    PushbackReader pr = new PushbackReader(sr, 20);

    try {/*from  w  w  w  .  j a  va  2  s  .com*/
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }
        char cbuf[] = { 'w', 'o', 'r', 'l', 'd' };

        pr.unread(cbuf, 1, 4);

        for (int i = 0; i < 4; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    PushbackReader pr = new PushbackReader(sr, 20);

    try {/* w  w  w  .j a  va2 s  .  co  m*/
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }

        char cbuf[] = { 'w', 'o', 'r', 'l', 'd' };

        pr.unread(cbuf);

        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    // create a new PushBack reader based on our string reader
    PushbackReader pr = new PushbackReader(sr, 20);
    try {//w  ww .jav a2s .com
        // read the first five chars
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    // create a new PushBack reader based on our string reader
    PushbackReader pr = new PushbackReader(sr, 20);

    try {//from   w w w.j  a v  a 2  s.c o m
        // read the first five chars
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    // create a new PushBack reader based on our string reader
    PushbackReader pr = new PushbackReader(sr, 20);

    try {//from  w w w . j a  v a2  s.  com
        // read the first five chars
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);

            // skip a character every time
            pr.skip(1);
        }

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    // create a new PushBack reader based on our string reader
    PushbackReader pr = new PushbackReader(sr, 20);

    try {//  ww  w.j a  va 2 s. c o m
        // check if the reader is ready
        System.out.println(pr.ready());

        // read the first five chars
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {

    String s = "from java2s.com";

    StringReader sr = new StringReader(s);

    // create a new PushBack reader based on our string reader
    PushbackReader pr = new PushbackReader(sr, 20);

    try {/*from   w ww.  j av  a  2s. com*/
        // read the first five chars
        for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
        }
        // unread a character
        pr.unread('F');

        // read the next char, which is the one we unread
        char c = (char) pr.read();

        System.out.println(c);

        pr.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

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