Foreach with JSONArray and JSONObject
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 -> {
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)
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20160810</version>
</dependency>
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 -> {
System.out.println(item.toString());
});
}
}
output:
{"key1":"value1"}
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.
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 < arr.length(); i++) {
arr.getJSONObject(i);
}
Source