CODEWITHSUNDEEP
javajson
momal
momal

Reputation: 587

JSON to Java gives errors

I'm trying to parse this following JSON string to java. 

{"Stdout":"Hello World\nThis is Sara","Stderr":"exit status 124"}

This string is dynamic and the content can be different as in,

{"Stdout":"Hello World\nThis is Sara","Stderr":""}

or

{"Stdout":"","Stderr":"exit status 124"}

I'm using the following tutorial and instead of the file I'm adding my String in it.

So I created this code to simply print what "Stdout" and "Stderr" have to say:

public void parsed(String str) {
    JSONParser parser=new JSONParser();
    try {
        Object obj = parser.parse(str);
        JSONObject jsonObject = (JSONObject) obj;
        JSONArray out = (JSONArray) jsonObject.get("Stdout");
        Iterator<String> iterator = out.iterator();
        while (iterator.hasNext()) {
            System.out.println(iterator.next());
        }
        // loop array
        JSONArray err = (JSONArray) jsonObject.get("Stderr");
        Iterator<String> iterator2 = err.iterator();
        while (iterator2.hasNext()) {
            System.out.println(iterator2.next());
        }

    } catch (ParseException e) {
        e.printStackTrace();
    }
}

I'm getting the following result. And I have tried each and every possible solution that I found on Stack Overflow and other sites.

java.lang.String cannot be cast to org.json.simple.JSONArray

Upvotes: 0

Views: 55

Answers (1)

Gerralt
Gerralt

Reputation: 221

The conversions of stdout and stderr are wrong. They're both a String instead of a JSONArray. Try this:

Change: JSONArray out = (JSONArray) jsonObject.get("Stdout");

To: String stdout= (String) jsonObject.get("Stdout");

And print that String and see what happens.

Upvotes: 1

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