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Asked: 2026-05-17T22:18:44+00:00

Out of curiosity, how many dimensions of an array can you have in Java?

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Out of curiosity, how many dimensions of an array can you have in Java?

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1 Answer

  1. Editorial Team

    The Java language does not limit the number of dimensions, but the Java VM spec limits the number of dimensions to 255.

    For example, the following code will fail to compile:

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

    with error:

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

    (Ref: https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.1 “An array type descriptor is valid only if it represents 255 or fewer dimensions.”)

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