Question

JAVA HW

Write a program that will search a text file of strings representing numbers of type int and will write the largest and the smallest numbers to the screen. Include appropriate error handling in case a line contains more than one int or it contains a String. Wrap all the work you are doing with the file in a try/catch/finally block with appropriate "catch" sections; the finally block will be where you close your file object (if desired, look this up online for more information regarding "finally" and when it is executed, specifically that it is executed in case of success or failure of the entire try block).

Answer 1

import java.io.File;
import java.io.FileNotFoundException;
import java.util.InputMismatchException;
import java.util.Scanner;

public class FileOps {
   public static void main(String[] args) {
       File f = new File("nums.txt");
       int small = 1000, big = -1;
       Scanner sc = null;
       try {
           sc = new Scanner(f);
           while (sc.hasNextInt()) {
               int n = sc.nextInt();
               if (n < small)
                   small = n;
               if (n > big)
                   big = n;
           }
       } catch (FileNotFoundException e) {

       }
       catch(InputMismatchException e){
           e.printStackTrace();
       }
       finally {
           sc.close();
       }
       System.out.println("Small Number : " + small);
       System.out.println("Big Number : " + big);

   }
}