Java编写一段代码，判断某字符串数组中是否有重复元素

public static void main(String[] args) {
        String[] str = {"qws", "123", "1", "ss", "1", "ss"};
        //计数器
        int count = 0;
        for (int i = 0; i < str.length; i++) {
            for (int j = 1 + i; j < str.length; j++) {
                if (str[i].equals(str[j])) {
                    System.out.println(str[i]);
                    count++;
                }
            }
        }
        if (count == 0) {
            System.out.println("无重复元素！");
        } else {
            System.out.println("有重复元素");
        }
    }