Example usage for java.io RandomAccessFile readUTF

Introduction

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

Prototype

public final String readUTF() throws IOException 

Source Link

Document

Reads in a string from this file.

Usage

From source file:Main.java

public static void main(String[] args) {
    try {/*from   w w  w. ja v  a2  s . co  m*/
        String s = "Hello world from java2s.com";

        RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");

        raf.writeUTF(s);

        raf.seek(0);

        System.out.println(raf.readUTF());

        raf.seek(0);

        raf.writeUTF("This is an example from java2s.com");

        raf.seek(0);

        System.out.println(raf.readUTF());
        raf.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }

}

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From source file:Main.java

public static void main(String[] args) throws IOException {
    RandomAccessFile raf = new RandomAccessFile("employee.dat", "rw");

    raf.writeUTF("J");
    raf.writeUTF("S");
    raf.writeDouble(4.0);// www.  jav  a  2s . c  o m
    raf.seek(0L);
    String fname = raf.readUTF();
    String lname = raf.readUTF();
    double salary = raf.readDouble();
    System.out.println("First name = " + fname);
    System.out.println("Last name = " + lname);
    System.out.println("Salary = " + salary);
    raf.close();
}

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From source file:Main.java

public static void main(String[] args) {
    try {/* w w  w  . j a  v a2 s .  c  o  m*/

        RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");
        raf.writeUTF("Hello World from java2s.com");

        // set the file pointer at 0 position
        raf.seek(0);

        System.out.println(raf.readUTF());

        // set the file pointer at 0 position
        raf.seek(0);

        raf.writeUTF("This is from java2s.com");

        // set the file pointer at 0 position
        raf.seek(0);

        // print the string
        System.out.println(raf.readUTF());
        raf.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

}

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From source file:Main.java

public static void main(String[] args) {
    try {//from w  ww . j a  v a  2 s . c o  m

        RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");

        raf.writeUTF("java2s.com");

        // set the file pointer at 0 position
        raf.seek(0);

        // read and print the contents of the file
        System.out.println(raf.readUTF());

        // close the strea and release resources
        raf.close();

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

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From source file:Main.java

public static void main(String[] args) {
    try {//from   w w  w . j a va 2 s.  co  m
        RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");

        raf.writeUTF("Hello World from java2s.com");

        // set the file pointer at 0 position
        raf.seek(0);

        // print the string
        System.out.println(raf.readUTF());

        // print current length
        System.out.println(raf.length());

        // set the file length to 30
        raf.setLength(30);

        System.out.println(raf.length());
        raf.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

}

---

From source file:Main.java

public static void main(String[] args) {
    try {//from   w  w  w . java 2 s.  c om
        RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");
        raf.writeUTF("Hello World from java2s.com");

        // set the file pointer at 0 position
        raf.seek(0);

        // print the string
        System.out.println(raf.readUTF());

        // set the file pointer at 5 position
        raf.seek(5);

        // write something in the file
        raf.writeUTF("This is an example from java2s.com");

        // set the file pointer at 0 position
        raf.seek(0);

        System.out.println(raf.readUTF());
        raf.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

}

---

From source file:Main.java

public static void main(String[] args) {
    try {//from   w  w w  .  ja  v  a  2s  . c  om
        RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");

        raf.writeUTF("java2s.com Hello World");

        // set the file pointer at 0 position
        raf.seek(0);

        // read and print the contents of the file
        System.out.println(raf.readUTF());

        // return the channel of the file
        System.out.println(raf.getChannel());

        // close the strea and release resources
        raf.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) {
    try {//from  w w  w .  j  a v a  2  s  .  c om
        RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");

        raf.writeUTF("java2s.com Hello World");

        // set the file pointer at 0 position
        raf.seek(0);

        // read and print the contents of the file
        System.out.println(raf.readUTF());

        // return the file descriptor of the stream
        System.out.println(raf.getFD());

        // close the strea and release resources
        raf.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

}

---

From source file:Main.java

public static void main(String[] args) {
    try {//from w w w .j  a va2 s  .  co  m

        RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");

        raf.writeUTF("Hello World from java2s.com");

        // set the file pointer at 0 position
        raf.seek(0);

        // print the string
        System.out.println(raf.readUTF());

        // set the file pointer at 0 position
        raf.seek(0);

        // attempt to skip 10 bytes
        System.out.println(raf.skipBytes(10));

        System.out.println(raf.readLine());

        // set the file pointer to position 8
        raf.seek(8);

        // attempt to skip 10 more bytes
        System.out.println(raf.skipBytes(10));
        raf.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

}

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From source file:Main.java

public static void main(String[] args) {
    try {// w w w  . jav  a2 s  .  c o  m

        RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");

        // write something in the file
        raf.writeUTF("java2s.com Hello World");

        // set the file pointer at 0 position
        raf.seek(0);

        // read and print the contents of the file
        System.out.println(raf.readUTF());

        // print the length of the file
        System.out.println(raf.length());

        // write something more in the file
        raf.writeUTF("This is an example");

        // print the length of the file
        System.out.println(raf.length());
        raf.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

}

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