Java tutorial
//package com.java2s; import android.content.Context; import org.json.JSONException; import org.json.JSONObject; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static JSONObject getAssetsJson(Context context, String jsonName) { try { InputStreamReader inputStreamReader = new InputStreamReader(context.getAssets().open(jsonName), "UTF-8"); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); String line; StringBuilder stringBuilder = new StringBuilder(); while ((line = bufferedReader.readLine()) != null) { stringBuilder.append(line); } bufferedReader.close(); inputStreamReader.close(); return new JSONObject(stringBuilder.toString()); } catch (IOException | JSONException e) { e.printStackTrace(); } return null; } }