public static void main(String[] args) {
        List<String> strings = new ArrayList<String>();
        Scanner scan = new Scanner(System.in);
        while(true){
            System.out.println("请输出数字，输入exit结束输入：");
            String s = scan.next();
            if(s.equals("exit")){
                break;
            }
            try {
                Integer.valueOf(s);
                strings.add(s);
            } catch (NumberFormatException e) {
                e.printStackTrace();
            }
        }
        int a[] = new int[strings.size()];
        for (int i = 0; i < a.length; i++) {
            a[i] = Integer.parseInt(strings.get(i));
        }
        for (int j = 0; j < a.length; j++) {
            System.out.println(a[j]);
        }
    }

------解决方案--------------------
命令行里面使用java命令运行类文件的时候，类名后面直接跟参数以空格分隔就好了