How to create a nested hashmap with multiple datatypes in Java?

Question

I need to get the output something like this:

[
 {
   "index": 2,
   "range": true,
   "label": { 
              "Label1":"Value1",
              "Label2":"Value2"
            }
 }
]

combination of values with an integer boolean and map<string,string>

In Python we can do it simply with a list and a dictionary but how can I achieve this in Java?

Which question are you asking, how to create the lists and maps described, or how to convert them to JSON? — khelwood
– khelwood, Commented Mar 27, 2021 at 17:20

khelwood · Accepted Answer · 2021-03-27 17:36:01Z

3

The structure you're describing appears to be something like this:

List.of(Map.of(
    "index", 2,
    "range", true,
    "label", Map.of("Label1", "Value1", "Label2", "Value2")
))

which is a List<Map<String, Object>>

answered Mar 27, 2021 at 17:36

khelwood

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