Example usage for java.io PushbackInputStream read

Introduction

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

Prototype

public int read() throws IOException 

Source Link

Document

Reads the next byte of data from this input stream.

Usage

From source file:PushbackInputStreamDemo.java

public static void main(String args[]) throws IOException {
    String s = "if (a == 4) a = 0;\n";
    byte buf[] = s.getBytes();
    ByteArrayInputStream in = new ByteArrayInputStream(buf);
    PushbackInputStream f = new PushbackInputStream(in);
    int c;/*  www. jav  a  2 s .c  o  m*/

    while ((c = f.read()) != -1) {
        switch (c) {
        case '=':
            if ((c = f.read()) == '=')
                System.out.print(".eq.");
            else {
                System.out.print("<-");
                f.unread(c);
            }
            break;
        default:
            System.out.print((char) c);
            break;
        }
    }
}

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From source file:Main.java

public static void main(String args[]) throws IOException {
    byte buf[] = "==  = ".getBytes();
    PushbackInputStream f = new PushbackInputStream(new ByteArrayInputStream(buf));
    int c;//from  w  w w .ja  v  a  2s .  c o  m
    while ((c = f.read()) != -1) {
        switch (c) {
        case '=':
            c = f.read();
            if (c == '=')
                System.out.print(".eq.");
            else {
                System.out.print("=");
                f.unread(c);
            }
            break;
        default:
            System.out.print((char) c);
            break;
        }
    }
}

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From source file:Main.java

public static void main(String args[]) throws IOException {
    byte buf[] = "==  = ".getBytes();
    PushbackInputStream f = new PushbackInputStream(new ByteArrayInputStream(buf), 100);
    int c;//from ww  w  .j a v  a 2s.  co m
    while ((c = f.read()) != -1) {
        switch (c) {
        case '=':
            c = f.read();
            if (c == '=')
                System.out.print(".eq.");
            else {
                System.out.print("=");
                f.unread(c);
            }
            break;
        default:
            System.out.print((char) c);
            break;
        }
    }
}

---

From source file:Main.java

public static void main(String[] args) {
    byte[] arrByte = new byte[1024];
    byte[] byteArray = new byte[] { 'j', 'a', 'v', 'a', '2', 's', '.', 'c', 'o', 'm' };

    InputStream is = new ByteArrayInputStream(byteArray);
    PushbackInputStream pis = new PushbackInputStream(is);

    try {/* ww  w. ja va  2 s. co m*/
        for (int i = 0; i < byteArray.length; i++) {

            arrByte[i] = (byte) pis.read();

            System.out.println((char) arrByte[i]);
        }

        pis.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {

    byte[] arrByte = new byte[1024];

    byte[] byteArray = new byte[] { 'j', 'a', 'v', 'a', '2', 's', '.', 'c', 'o', 'm' };

    InputStream is = new ByteArrayInputStream(byteArray);
    PushbackInputStream pis = new PushbackInputStream(is);

    try {// www.  jav  a 2  s  . com
        for (int i = 0; i < byteArray.length; i++) {

            arrByte[i] = (byte) pis.read();

            System.out.println((char) arrByte[i]);
        }

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

---

From source file:Main.java

public static void main(String[] args) {
    byte[] arrByte = new byte[1024];
    byte[] byteArray = new byte[] { 'j', 'a', 'v', 'a', '2', 's', '.', 'c', 'o', 'm' };

    InputStream is = new ByteArrayInputStream(byteArray);
    PushbackInputStream pis = new PushbackInputStream(is);

    try {/*from w w w .  j  a  va  2  s  . c om*/

        for (int i = 0; i < byteArray.length; i++) {

            arrByte[i] = (byte) pis.read();

            System.out.println((char) arrByte[i]);
        }

        pis.reset();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {
    byte[] arrByte = new byte[1024];
    byte[] byteArray = new byte[] { 'j', 'a', 'v', 'a', '2', 's', '.', 'c', 'o', 'm' };

    InputStream is = new ByteArrayInputStream(byteArray);
    PushbackInputStream pis = new PushbackInputStream(is);

    try {/*  w w w.  j a v a 2s . c o  m*/

        for (int i = 0; i < byteArray.length; i++) {

            arrByte[i] = (byte) pis.read();

            System.out.println((char) arrByte[i]);
        }

        pis.mark(5);

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

---

From source file:Main.java

public static void main(String[] args) {
    byte[] arrByte = new byte[1024];
    byte[] byteArray = new byte[] { 'j', 'a', 'v', 'a', '2', 's', '.', 'c', 'o', 'm' };

    InputStream is = new ByteArrayInputStream(byteArray);
    PushbackInputStream pis = new PushbackInputStream(is, 10);

    try {/*from   w w  w  .  j  a  v a2 s  .  c  o  m*/
        for (int i = 0; i < byteArray.length; i++) {
            arrByte[i] = (byte) pis.read();
            System.out.println((char) arrByte[i]);
        }
        byte[] b = { 'W', 'o', 'r', 'l', 'd' };
        pis.unread(b);
        for (int i = 0; i < byteArray.length; i++) {
            arrByte[i] = (byte) pis.read();
            System.out.println((char) arrByte[i]);
        }
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {
    byte[] arrByte = new byte[1024];
    byte[] byteArray = new byte[] { 'j', 'a', 'v', 'a', '2', 's', '.', 'c', 'o', 'm' };

    InputStream is = new ByteArrayInputStream(byteArray);
    PushbackInputStream pis = new PushbackInputStream(is, 10);
    try {//from   ww  w .j a va2s.co  m
        for (int i = 0; i < byteArray.length; i++) {
            arrByte[i] = (byte) pis.read();
            System.out.println((char) arrByte[i]);
        }
        byte[] b = { 'W', 'o', 'r', 'l', 'd' };

        pis.unread(b, 2, 3);

        for (int i = 0; i < 3; i++) {
            arrByte[i] = (byte) pis.read();
            System.out.println((char) arrByte[i]);
        }
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {

    byte[] arrByte = new byte[1024];

    byte[] byteArray = new byte[] { 'j', 'a', 'v', 'a', '2', 's', '.', 'c', 'o', 'm' };

    InputStream is = new ByteArrayInputStream(byteArray);
    PushbackInputStream pis = new PushbackInputStream(is);
    try {/* w  ww  .j  a  v  a  2  s .  c o  m*/
        pis.skip(1);

        for (int i = 0; i < byteArray.length - 1; i++) {

            arrByte[i] = (byte) pis.read();

            System.out.println((char) arrByte[i]);
        }

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

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