Hi

Im trying to write a program that take list of numbers from TXT file

then save them into array

then convert them into integers and do a binary search on them

here is what i tried to do

import java.util.ArrayList;
import java.util.Collections;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileNotFoundException;
import java.io.IOException;


public class BinarySearchArrayListExample {



public static void main(String[] args) {

//Read A TXT File

File file = new File("test.txt");
        StringBuffer contents = new StringBuffer();
        BufferedReader reader = null;

        try
        {
            reader = new BufferedReader(new FileReader(file));
            String text = null;

            // repeat until all lines is read
            while ((text = reader.readLine()) != null)
            {
                contents.append(text)
                    .append(System.getProperty(
                        "line.separator"));
            }
        } catch (FileNotFoundException e)
        {
            e.printStackTrace();
        } catch (IOException e)
        {
            e.printStackTrace();
        } finally
        {
            try
            {
                if (reader != null)
                {
                    reader.close();
                }
            } catch (IOException e)
            {
                e.printStackTrace();
            }
        }

        // show file contents here
        System.out.println(contents.toString());



//ArraY

ArrayList arrayList = new ArrayList();

//Add elements to Arraylist

arrayList.add(contents.toString());


//First sort an ArrayList using sort method of Collections class

Collections.sort(arrayList);

System.out.println("Sorted ArrayList contains : " + arrayList);


//search an element using binarySearch method of Collections class

int index = Collections.binarySearch(arrayList,"2");


System.out.println("Element found at : " + index);

}

}
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