An array can be stored inside another JSON array; that's called a multidimensional array. JSON conversions between text and object. There are two methods for converting between text and objects: parse ...

Multidimensional arrays are useful for complex computing scenarios, ... According to the first sentence of Chapter 10 in the Java Language Specification arrays are objects in Java.

Arrays.toString(Object[]) will print a String representation for multi-dimensional arrays, but this representation suffers the same drawbacks as Object.toString() after the first dimension.