How to use the JsonArray class to convert a json string array into an array!

Use the JsonArray` class to handle arrays of JSON strings, which can be converted to Java arrays using:

```java

import javax.json.Json;
import javax.json.JsonArray;
import javax.json.JsonReader;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        String jsonString = "[\"item1\", \"item2\", \"item3\"]";

        JsonReader jsonReader = Json.createReader(new StringReader(jsonString));
        JsonArray jsonArray = jsonReader.readArray();
        jsonReader.close();

        List<String> arrayList = new ArrayList<>();
        for (int i = 0; i < jsonArray.size(); i++) {
            String item = jsonArray.getString(i);
            arrayList.add(item);
        }

        String[] array = arrayList.toArray(new String[0]);

        System.out.println(java.util.Arrays.toString(array));
    }
}

```

In this example, we use a `JsonReader` to create a `JsonArray` object from a JSON string, then iterate over the elements in the `JsonArray` and add each element to a `List`. Finally, we convert the `List` into a Java array using the `toArray()` method.

Note that the methods in this example apply to `JsonArray` in the `javax.json` package. If you're using another JSON parsing library, there may be different ways to achieve similar functionality.