How to convert JSON array to array using JSON-lib API in Java?-javaTutorial-php.cn

How to convert JSON array to array using JSON-lib API in Java?

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Release： 2023-08-25 17:17:02

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如何使用Java中的JSON-lib API将JSON数组转换为数组？

JSONArray is a sequence of values, the outer text is a string enclosed in square brackets with commas separating the values, and the inner text is a string with Object get() and opt() methods, we need to access these values by index. The element() method for adding or replacing these values. Array is an object that stores multiple values of the same type. It can hold primitive types and object references . We can convert a JSON array into an array using the toArray() method of the JSONArray class. This method generates an Object[] containing the contents of a JSONArray.

Syntax

public Object[] toArray()

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Example

import java.util.Arrays;
import net.sf.json.JSONArray;
public class ConvertJSONArrayToArrayTest {
   public static void main(String[] args) {
      <strong>J</strong>SONArray jsonArray = new JSONArray()
                                .element("Raja Ramesh")
                                .element("115")
                                .element("Tutorials Point")
                                .element("Hyderabad")
                                .element(new String [] {"Java", "Testing", "Python"});
      String jsonStr = jsonArray.toString(3); //pretty print JSON
      System.out.println("JSON:\n" + jsonStr);
      Object[] array = jsonArray.toArray();
      System.out.println("-------------------------------------------------------------------");
      System.out.println("Array:\n" + Arrays.toString(array));
   }
}

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Output

JSON:
[
   "Raja Ramesh",
   "115",
   "Tutorials Point",
   "Hyderabad",
   [
    "Java",
    "Testing",
    "Python"
   ]
]
----------------------------------------------------------------------------
Array:
[Raja Ramesh, 115, Tutorials Point, Hyderabad, ["Java","Testing","Python"]]

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