Moshi: Convert list to json

Step 1: Get an instance of Moshi.

Moshi moshi = new Moshi.Builder().build();

Step 2: Get an instance of JsonAdapter to convert list to a json.

Type type = Types.newParameterizedType(List.class, String.class);
JsonAdapter<List<String>> jsonAdapter = moshi.adapter(type);

Step 3: Convert list to the json.

String json = jsonAdapter.toJson(hobbies);

Find the below working application.

 

ListToJson.java

package com.sample.app;

import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.List;

import com.squareup.moshi.JsonAdapter;
import com.squareup.moshi.Moshi;
import com.squareup.moshi.Types;

public class ListToJson {

    public static void main(String args[]) {
        
        List<String> hobbies = Arrays.asList("cooking", "trekking");
        
        Moshi moshi = new Moshi.Builder().build();
        
        Type type = Types.newParameterizedType(List.class, String.class);
        JsonAdapter<List<String>> jsonAdapter = moshi.adapter(type);
        
        String json = jsonAdapter.toJson(hobbies);
        
        System.out.println(json);
                
    }
}

Output

["cooking","trekking"]

 

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