java - Java数组：组件和元素之间的区别

Question

我正在阅读该类的APIArrayType，它是ASTNode.

有一种方法getComponentType()，一种方法getElementType()。

对于Statement: int[] list = new int[50]，上述两种方法都返回类型 - int。

有谁知道这两种方法之间的区别可能是？

Answer 1

The Javadoc has a table with brief descriptions, but you have to scroll down to read the full explanations. For getComponentType(), it says:

Returns the component type of this array type. The component type may be another array type.

whereas for getElementType(), it says:

Returns the element type of this array type. The element type is never an array type.

This is a convenience method that descends a chain of nested array types until it reaches a non-array type.

So, for example, an int[][] would have a "component type" of int[], but an "element type" of int.