code translation
Java:
public class Solution {
    public static boolean hasCloseElements(int[] nums, int threshold) {
        for (int i = 0; i < nums.length - 1; i++) {
            for (int j = i + 1; j < nums.length; j++) {
                if (Math.abs(nums[i] - nums[j]) < threshold) {
                    return true;
                }
            }
        }
        return false;
    }
}
Python: