Random Line reading in text file

Question

I am trying to read a random line in a text file but every time i read it it reads first line of the file any one can help me what is the problem in the code is or provide me with a new code.
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
               File file = new File("word.txt");
               if(!file.exists())
                    System.out.println("File does not exist.");
                    System.exit(0);
               try{
                    //Open the file for reading
                    RandomAccessFile raf = new RandomAccessFile(file, "r");
raf.seek(file.length());     //Seek to end of file
                    System.out.println("Read full line: " + raf.readLine());
//str2 is a String
                    str2 = str2 + raf.readLine();
                    System.out.println(""+str2);
                    raf.close();
                    System.out.println("Successfully");
               catch(IOException ioe)
                    System.out.println(ioe.getMessage());
my text file look like in this format
mind
hate
Abhor
Bigot
narrow
prejudiced
person
Counterfeit
fake
false
give
voting
rights
Hamper
hinder
obstruct
Kindle
to
start
fire
harmful
poisonous
lethal

Answer 1

Next time when posting code, please use code tags: http://forum.java.sun.com/help.jspa?sec=formatting
A RandomAccessFile has nothing to do with getting a (pseudo) random line number from a file.
You should also split things up in separate methods:
- a method for counting the number of lines in a file;
- a method to get the N-th line from a file.
In your main method, you call the method which counts the number of lines N in a file and then generate a (pseudo) random number between 1 and N. Use the java.util.Random class for this.
When you have generated that number, call the other method to get that specific line number.
Here's a small start:
import java.io.*;
import java.util.*;
public class Main {
    public static String getLineNumber(int number) throws FileNotFoundException {
        // your code here
    public static int countLines(String fileName) throws FileNotFoundException {
        // your code here
    public static void main(String[] args) throws Exception {
        int numberLines = countLines("word.txt");
        Random generator = new Random();
        int randomNumber = generator.nextInt(numberLines)+1;
        String randomLine = getLineNumber(randomNumber);
        System.out.println("Line "+randomNumber+" = '"+randomLine+"'");
}In both methods, you can use the java.util.Scanner class to read lines from the file.
Have a look at the API docs of the Scanner class:
http://java.sun.com/j2se/1.5.0/docs/api/java/util/Scanner.html (including code samples!)
Good luck.