Regular expression fo parsing JSON arrays in Java

Question

I am writing a Java application where I have to extract information from a JSON file. I want to get every element of a JSON array using Regex. I found this expression \[([^]]+)\] which works only with non-nested arrays, but not for the example below.

list[
 0{
    somedata{...},
    sublist0[ 
       somedata(...), 
       somedata(...) 
       ],
    key: value,
},
 1{
    somedata{...},
    sublist1[ 
       somedata(...), 
       somedata(...) 
       ],
    key: value,
}, .... ,
N{
    somedata{...},
    sublistN[ 
       somedata(...), 
       somedata(...) 
       ],
    key: value,
}
],
somedata{...}

For this example, the expression matches element 0, sublist1, sublist2 ... sublistN and ignores the other elements from the elements. I am looking for the appropriate regular expression because I can't use any external libraries for this project. The elements' names may also vary.