不是前边应该加上整形（int）吗？ int three = one + two;
        System.out.println("three = one +two ==>"+three);
        int three += one;
        System.out.println("three += one ==>"+three);
        int three -= one;
         System.out.println("three -= one ==>"+three);
        int three *= one;
        System.out.println(" three *= one ==>"+three);
        int three /= one;
         System.out.println(" three /= one ==>"+three);
        int three %= one;
        System.out.println(" three %= one ==>"+three);