Possible Duplicates:
JSON Array iteration in Android/Java
JSONArray with Java
Is it possible to iterate through JSONArray object using Iterator?
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Check this out stackoverflow.com/questions/3408985/…yeradis– yeradis2011-01-24 17:21:49 +00:00Commented Jan 24, 2011 at 17:21
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The link on the question returns error 404.Wicket– Wicket2018-09-29 18:08:13 +00:00Commented Sep 29, 2018 at 18:08
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2 Answers
Not with an iterator.
For org.json.JSONArray, you can do:
for (int i = 0; i < arr.length(); i++) {
arr.getJSONObject(i);
}
For javax.json.JsonArray, you can do:
for (int i = 0; i < arr.size(); i++) {
arr.getJsonObject(i);
}
6 Comments
husayt
Wouldn't it will calling arr.length() on each iteration? So maybe better to put that into vairable and use that in the loop.
Henrique C.
Well yes but it will be the same value everytime, but yes its unecessary a variable should be better.
Mathijs Segers
Depends on the Compiler, Also I believe it'll just be a getter fetching a value which is not mutable from outside the instance, setting a variable would just allocate more memory 8-).
Peter
There is no
.length() method on a JsonArray, but there is a .size() method inherited from java.util.List. docs.oracle.com/javaee/7/api/javax/json/JsonArray.html
Mike Stoddart
Is he referring to github.com/stleary/JSON-java/blob/master/JSONArray.java?
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You can use the opt(int) method and use a classical for loop.
