How can we merge two JSON arrays in Java?

A JSON is a lightweight data exchange format. The format of JSON is key-value pair . JSONArray Can parse text from a string to generate a vector-like objectand supports the java.util.List interface. We can merge two JSON arrays in Java using org.json.simple.JSONArray class.

We can use the addAll() method (inherited from interface java.util.List) to merge two JSON arrays in the program below.

Example

import org.json.simple.JSONArray;
import java.io.IOException;
public class MergeJSONArraysTest {
   public static void main(String[] args) throws IOException {
      JSONArray jsonArray1 = new JSONArray(); // first json array
      jsonArray1.add("Java");
      jsonArray1.add("Python");
      jsonArray1.add("Spark");
      JSONArray jsonArray2 = new JSONArray(); // second json array
      jsonArray2.add("Selenium");
      jsonArray2.add("ServiceNow");
      jsonArray1.addAll(jsonArray2); // merge two arrays using addAll() method
      System.out.println(jsonArray1);
   }
}

Output

["Java","Python","Spark","Selenium","ServiceNow"]

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