java - 数组是复合数据类型，但是如何呢？

Question

Array is composite data type.A composite data type is one whose values are composed of component values(possibly values chosen from other data types.) Example of composite datatype is array.

int a[ ] = {1,2,3,4,5};

在上面的示例中，据我所知，它是复合的，因为一个 array-of-int 值由从 int 类型中选择的一些元素值组成。使用复合数据类型，我们可以将多条相关数据作为单个数据进行管理。数组是使用以相同数据类型声明的多个值的概念。

请简单说明数组是复合数据类型。用例子解释这个说法？

Answer 1

A class defined with various primitive data types such as int, double etc;but i am using only one data type for array initialization that is int

考虑以下示例:

class Test {
    int a, b, c;
    Test() {
        a = 1 ; b = 2 ; c = 3;
    }
}

class Main {
    public static void main(String[] args) {
        Test object = new Test();
    }
}

根据您的定义，在这种情况下，即使类 Test 也将是原始数据类型，因为它只有 int 类型的值。然而，事实并非如此。

正如@Henry 所说，

The element types are irrelevant, important is only that there are several elements

所以基本上，我想说复合数据类型的更精确定义是:

The data types which are created by the user, which may consist of one or more primitive data types, created under a single declaration are called Composite data types.

根据该定义，数组也是复合数据类型。