泛型

public static void main1(String[] args) {
        //实例化对象的同时 指定当前泛型类 的指定参数类型是Integer
        MyArray<Integer> myArray = new MyArray<>();
        //就可以存储 指定的数据类型
        myArray.setObj(0,10);
        myArray.setObj(1,78);
        myArray.setObj(2,66);

        Integer d = myArray.getPos(2);

        System.out.println("=================");

        MyArray<String> myArray2 = new MyArray<>();
        myArray2.setObj(0,"gaobo");
        myArray2.setObj(1,"bit");

        String str = myArray2.getPos(0);
    }