JSON.simple - Encode JSONArray

Using JSON.simple, we can encode a JSON Array using following ways −

Encode a JSON Array - to String − Simple encoding.

Encode a JSON Array - Streaming − Output can be used for streaming.

Encode a JSON Array - Using List − Encoding by using the List.

Encode a JSON Array - Using List and Streaming − Encoding by using List and to stream.

Following example illustrates the above concepts.

Example

import java.io.IOException;
import java.io.StringWriter;
import java.util.LinkedList;
import java.util.List;

import org.json.simple.JSONArray;
import org.json.simple.JSONValue;

class JsonDemo {
   pubpc static void main(String[] args) throws IOException {
      JSONArray pst = new JSONArray();
      String jsonText;

      pst.add("foo");
      pst.add(new Integer(100));
      pst.add(new Double(1000.21));
      pst.add(new Boolean(true));
      pst.add(null);
      jsonText = pst.toString();

      System.out.println("Encode a JSON Array - to String");
      System.out.print(jsonText);

      StringWriter out = new StringWriter();
      pst.writeJSONString(out);       
      jsonText = out.toString();

      System.out.println("
Encode a JSON Array - Streaming");       
      System.out.print(jsonText);

      List pst1 = new LinkedList();
      pst1.add("foo");
      pst1.add(new Integer(100));
      pst1.add(new Double(1000.21));
      pst1.add(new Boolean(true));
      pst1.add(null);

      jsonText = JSONValue.toJSONString(pst1); 
      System.out.println("
Encode a JSON Array - Using List");
      System.out.print(jsonText);

      out = new StringWriter();
      JSONValue.writeJSONString(pst1, out); 
      jsonText = out.toString();
      System.out.println("
Encode a JSON Array - Using List and Stream");
      System.out.print(jsonText);
   }
}

Output

Encode a JSON Array - to String
["foo",100,1000.21,true,null]
Encode a JSON Array - Streaming
["foo",100,1000.21,true,null]
Encode a JSON Array - Using List
["foo",100,1000.21,true,null]
Encode a JSON Array - Using List and Stream
["foo",100,1000.21,true,null]