Java数组中的最大维数

Question

出于好奇,你可以在Java中拥有多少个数组维度？

Answer 1

Java 语言不限制维度数,但Java VM规范将维度数限制为255.

例如,以下代码将无法编译:

class Main {
    public static void main(String[] args) {
        final int[][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][]
                 [][][][][][][][][][][][][][][][] x;
    }
}

有错误:

1.java:18: error: array type has too many dimensions
                 [][][][][][][][][][][][][][][][] x;
                                                  ^
1 error

(参考:https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.1 "数组类型描述符仅在其表示255或更少维度时才有效. ")