Runtime error la urmatorul program [euclid2]

[•lesanu]

import java.io.File;
import java.io.FileWriter;
import java.util.Scanner;

public class Main {
   private static final String IN = "euclid2.in";
   private static final String OUT = "euclid2.out";
   
   private static int TESTS_COUNT;
   private static int[] a;
   private static int[] b;
   private static int[] result;
   
   public static void main(String[] args) {
      readInput();
      
      computeSolution();
      
      displaySolution();
   }
   
   private static void computeSolution() {
      for (int i = 0; i < TESTS_COUNT; i++) {
         result = gcd(a, b);
      }
   }
   
   private static int gcd(int one, int two) {
      if (two == 0) {
         return one;
      }
      
      return gcd(two, one % two);
   }
   
   private static void displaySolution() {
      FileWriter out = null;
      
      try {
         out = new FileWriter(OUT);
      } catch (Exception e) {
         e.printStackTrace();
      }
      
      for (int i = 0; i < TESTS_COUNT; i++) {
         try {
            out.write(result + "\n");
         } catch (Exception e) {
            e.printStackTrace();
         }
      }
      
      try {
         out.close();         
      } catch (Exception e) {
         e.printStackTrace();
      }
   }
   
   private static void readInput() {
      Scanner s = null;
      
      try {
         s = new Scanner(new File(IN));         
      } catch (Exception e) {
         e.printStackTrace();
      }
      
      TESTS_COUNT = s.nextInt();
      a = new int[TESTS_COUNT];
      b = new int[TESTS_COUNT];
      result = new int[TESTS_COUNT];
      
      for (int i = 0; i < TESTS_COUNT; i++) {
         a = s.nextInt();
         b = s.nextInt();
      }
      
      s.close();
   }
}

De ce la toate testele imi zice "Runtime Error" ?

[•freak93]

Java inca est in Beta. In zilele urmatoare ar trebui sa se mai corecteze multe Runtime Error.