Foreach with JSONArray and JSONObject

Question

I m using org json simple JSONArray and org json simple JSONObject  I know that these two classes JSONArray and JSONObject are incompatible  but still I want to do quite a natural thing - I want to for-each over JSONArray parsing at each iteration step one JSONObject  nested inside that JSONArray   I try to do it like so   JSONArray arr            lt -- got by some procedure for JSONObject o  arr       parse o       When I try to compile this code  indeed I get  incompatible types  error  even though it looks so natural  So  my question is what is the best way to iterate through JSONArray

User · Answer

Seems like you can t iterate through JSONArray with a for each  You can loop through your JSONArray like this   for  int i 0  i  lt  arr length    i          arr getJSONObject i       Source

User · Answer

Make sure you are using this org json  https   mvnrepository com artifact org json json  if you are using Java 8 then you can use  import org json JSONArray  import org json JSONObject   JSONArray array         array forEach item - gt        JSONObject obj    JSONObject  item      parse obj         Just added a simple test to prove that it works   Add the following dependency into your pom xml file  To prove that it works  I have used the old jar which was there when I have posted this answer    lt dependency gt       lt groupId gt org json lt  groupId gt       lt artifactId gt json lt  artifactId gt       lt version gt 20160810 lt  version gt   lt  dependency gt    And the simple test code snippet will be   import org json JSONArray  import org json JSONObject   public class Test       public static void main String args              JSONArray array   new JSONArray             JSONObject object   new JSONObject            object put  key1    value1             array put object            array forEach item - gt                System out println item toString                           output     key1   value1

User · Answer

Apparently  org json simple JSONArray implements a raw Iterator  This means that each element is considered to be an Object  You can try to cast   for Object o  arr       if   o instanceof JSONObject             parse  JSONObject o             This is how things were done back in Java 1 4 and earlier

[java] Foreach with JSONArray and JSONObject

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