Java code to find a particular number from a given list of numbers

How would you solve the following java problem?

Write code that finds a particular number from a given list of numbers which are stored as strings?

I assume you would have to convert the strings to ints or doubles, using double.parse double or int.parse int and then do some kind of binary search maybe?

Here's what I have tried so far

import java.io.*; import java.util.Scanner;

public class FindNum {

static int nElems;

static String[] array;



public static void main (String[] args) throws IOException {

    File testFile = new File("X:\\numbers.txt");    



    Scanner in = new Scanner(System.in);

    System.out.println("What number would you like to find?");

    nElems = in.nextInt();

    while(true){

    System.out.println("Binary search");

    array = new String[nElems];

    getContents(testFile);//loads the file

That's just basic input to get the access the file witht the list of numbers wondering how would I go about coding a binary search method on the list of strings using the parse method to change them to ints first?