如何在Java中制作数组数组 [英] How to make an array of arrays in Java

问题描述

假设，我有 5 个字符串数组对象:

Hypothetically, I have 5 string array objects:

String[] array1 = new String[];
String[] array2 = new String[];
String[] array3 = new String[];
String[] array4 = new String[];
String[] array5 = new String[];

我想要另一个数组对象来包含这 5 个字符串数组对象.我该怎么做?我可以把它放在另一个数组中吗?

and I want another array object to contain those 5 string array objects. How do I do it? Can I put it in another array?

推荐答案

像这样:

String[][] arrays = { array1, array2, array3, array4, array5 };

或

String[][] arrays = new String[][] { array1, array2, array3, array4, array5 };

(后一种语法可用于变量声明以外的赋值，而较短的语法仅适用于声明.)

(The latter syntax can be used in assignments other than at the point of the variable declaration, whereas the shorter syntax only works with declarations.)

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