Pretty-print a Map in Java

Question

I am looking for a nice way to pretty-print a Map.

map.toString() gives me: {key1=value1, key2=value2, key3=value3}

I

Answer 1

Simple and easy. Welcome to the JSON world. Using Google's Gson:

new Gson().toJson(map)

Example of map with 3 keys:

{"array":[null,"Some string"],"just string":"Yo","number":999}