(URGENT)Please help me find NZEC error in this code.

void mymethod(int arr[], int k) {
int n = arr.length;
int count = 0;
HashMap<Integer,StringBuilder> map = new HashMap<>();
StringBuilder s = new StringBuilder(),s1 = new StringBuilder();
int c = 1, large = Integer.MAX_VALUE;double lent=1;
for (int i = 0; i < n; i++) {
for (int j = i; j < n; j++) {
{
for (int k1 = i; k1 <= j; k1++)
s.append(arr[k1]);

                    try {
                        int x = Integer.parseInt(String.valueOf(s.charAt(s.length() - 1)));
                        int x1 = Integer.parseInt(String.valueOf(s.charAt(0)));
                        lent = (double) k / (x - x1 + 1);
                    } catch (Exception ex) {
                        System.out.println("BOO");
                    }

                    s1.append(s);
                    try {
                        for (int r = 0; r < lent - 1; r++)
                            s.append(s1);

                        s1.setLength(0);
                        s1.append(sortString(s.toString()));
                        map.put(c++, new StringBuilder(s1.toString()));

                        if (s1.length() >= k) {
                            int temp = Integer.parseInt(String.valueOf(s1.charAt(k - 1)));
                            if (large >= temp) {
                                large = temp;
                            }
                        }
                        s.setLength(0);
                        s1.setLength(0);
                    }
                    catch (Exception ex)
                    {
                        System.out.println("BOO");
                    }
                }

            }
        }
        for (int i = 1; i <= map.size(); i++) {
            String temp = map.get(i).toString();
            if (temp.contains(String.valueOf(large)))
                count++;
        }
        //System.out.println(map+" "+large);
        //s.setLength(0);
        System.out.println(count);
        s.setLength(0);
        s1.setLength(0);
        map.clear();
    }
//