How to generate JSONArray properly from Java?

I'm trying to generate that kind of JSON String using Java (purpose : flot for Android) : { "data": [[1999, 1], [2000, 0.23], [2001, 3], [2002, 4], [2003, 1.3], [2004, 2.5], [2005, 2.0], [2006, 3.1], [2007, 2.9], [2008, 0.9]] } To do this, I'm using JSONArray like this : JSONArray jsonArray = new JSONArray(); jsonArray.put("[1999, 1]"); jsonArray.put("[2000, 0.23]"); jsonArray.put("[2001, 3]"); ... But the only result I get is this : ["[1999, 1]","[2000, 0.23]","[2001, 3]",..."[2008, 0.9]"] How Can I remove quote between brackets ? Can I type the items of my array ? Thanks in advance!

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