如何在Java中编写"所有这些数字都不同"的条件？

public class Main {
    public static void main(String[] args) {
        int[] numbers = {1, 2, 3, 4, 5};
        boolean allDifferent = true;

        for (int i = 0; i < numbers.length; i++) {
            for (int j = i + 1; j < numbers.length; j++) {
                if (numbers[i] == numbers[j]) {
                    allDifferent = false;
                    break;
                }
            }
            if (!allDifferent) {
                break;
            }
        }

        if (allDifferent) {
            System.out.println("所有这些数字都不同");
        } else {
            System.out.println("存在相同的数字");
        }
    }
}