How to convert List of Object into List of Strings

Question

I'm trying to Convert List of Object into List of Strings

My List of Custom Object is like this

convertedData { rawMaterialId: "3411", batchNumber: "166,465,963,962,785", location: "hhh,ooo,hhh,uio,pop", quantity: "900,302,560,650,989" }

I'm trying to convert this JSON object into List of Strings

It should look like this,

List[ "3411" ,"166" ,"465" ,"963" ,"hhh","ooo","pop","900","302","560"]

I tried with below code

String[] array = new String[convertedData.size()];
    int index = 0;
    for (Object value : convertedData) {
      array[index] = (String) value;
      index++;
    }

Any suggestions and correction welcomed.Thanks in advance.

Answer 1

You should split the converted data.

List<String> list = new ArrayList<>();
for (Object value : convertedData) {
    if (value instanceof String) {
        String str = (String) value;
        list.addAll(Arrays.asList(str.split(",")));
    }
}
String[] array = list.toArray(new String[list.size()]);

Answer 2

    List<String> list = new ArrayList<>();

    for (Object value : convertedData) {
        String[] wordList = ((String) value).split(",");
        for (String val : wordList) {
            list.add(val);
        }
    }

    String[] stringArray = list.toArray(new String[list.size()]);