From what I can read on json.orgjson.org, all JSONJSON strings should start with { (curly brace), and the [ characters (square bracketbrackets) represent an array element in JSON.
 I use the json4j library, and an input what I got startan input that starts with [, so I'm thinkingI didn't think this isn't awas valid jsonJSON. I looked briefly at the jsonJSON schema, but I couldn't really foundfind it stated that jsona JSON file cannot start with [, or startsthat it can only start with {.