Untitled

I have the following Java code that I use to parse JSON strings:

Pattern pa = Pattern.compile("\"([^\"]*?)\"\\s*:\\s*(\"[^\"]*?\"|\\d+|true|false|null|\\{.*?}|\\[.*?])");
Matcher ma = pa.matcher(json);

while (ma.find()) {
	// Key
	String fieldName = ma.group(1);
	String fieldValue = !ma.group(2).startsWith("\"") ? ma.group(2) : ma.group(2).substring(1, ma.group(2).length() - 1);

This code works verz well except when I test it for using this string:
{"DoubleValue": 1.002}

it does not return 1.002, instead it returns 1
fix it!