clean-up javadoc error

fix gradle packaging group

README.md

@@ -24,6 +24,24 @@ Runtime:
 For development:
  - Gradle 6.7+ (https://gradle.org/install/) 
 
+## Maven / Gradle support
+
+Edit your build.gradle file
+```java
+repositories {
+    maven { url "https://jitpack.io" }
+}
+
+dependencies {
+    implementation 'com.github.serpapi:google-search-results-java:2.0.2'
+}
+```
+
+To list all the version available.
+https://jitpack.io/api/builds/com.github.serpapi/google-search-results-java
+
+Note: jitpack.io enables to download maven package directly from github release.
+
 ## Quick start
 
 To get started with this project in Java. 

build.gradle

@@ -9,8 +9,8 @@ plugins {
 
 // Package default
 archivesBaseName = 'google-search-results-java'
-version = '2.0.2'
-group = 'serpapi'
+version = '2.0.3'
+group = 'com.github.serpapi'
 
 // java version 
 sourceCompatibility = 1.8

demo/build.gradle

@@ -18,12 +18,14 @@ repositories {
     // Use jcenter for resolving your dependencies.
     // You can declare any Maven/Ivy/file repository here.
     jcenter()
+
+    maven { url "https://jitpack.io" }
 }
 
 dependencies {
-    implementation fileTree(dir: "./libs", includes: ['*.jar'])
-
+    // implementation fileTree(dir: "./libs", includes: ['*.jar'])
     implementation group: 'com.google.code.gson', name: 'gson', version: '2.8.5'
+    implementation 'com.github.serpapi:google-search-results-java:2.0.3'
 }
 
 // Define the main class for the application

src/main/java/serpapi/ParameterStringBuilder.java

@@ -11,7 +11,10 @@
 public class ParameterStringBuilder
  {
    /***
+    * getParamsString 
     * @param params search parameters
+    * @return concatenated parameters
+    * @throws UnsupportedEncodingException when none UTF-8 character is part of the parameter
     */
     public static String getParamsString(Map<String, String> params)
       throws UnsupportedEncodingException

src/main/java/serpapi/SerpApiHttpClient.java

@@ -21,21 +21,29 @@ public class SerpApiHttpClient {
   private int httpConnectionTimeout;
   private int httpReadTimeout;
 
-  // current API version
-  public static String VERSION = "2.0.2";
+  /**
+   * current API version
+   */
+  public static String VERSION = "2.0.3";
 
-  // backend service
+  /**
+   * backend service
+   */
   public static String BACKEND = "https://serpapi.com";
 
-  // initialize gson
+  /**
+   * initialize gson
+   */
   private static Gson gson = new Gson();
 
-  // current backend HTTP path
+  /**
+   * current backend HTTP path
+   */
   public String path;
 
   /***
    * Constructor
-   * @param path
+   * @param path HTTP url path
    */
   public SerpApiHttpClient(String path) {
     this.path = path;
@@ -47,7 +55,7 @@ public SerpApiHttpClient(String path) {
    * @param path url end point
    * @param parameter search parameter map like: { "q": "coffee", "location": "Austin, TX"}
    * @return httpUrlConnection
-   * @throws SerpApiSearchException
+   * @throws SerpApiSearchException wraps error message
    */
   protected HttpURLConnection buildConnection(String path, Map<String, String> parameter) throws SerpApiSearchException {
     HttpURLConnection con;
@@ -121,6 +129,7 @@ public boolean verify(String hostname, SSLSession session) {
    *
    * @param parameter user search parameters
    * @return http response body
+   * @throws SerpApiSearchException wraps error message
    */
   public String getResults(Map<String, String> parameter) throws SerpApiSearchException {
     HttpURLConnection con = buildConnection(this.path, parameter);
@@ -166,6 +175,11 @@ public String getResults(Map<String, String> parameter) throws SerpApiSearchExce
     return content.toString();
   }
 
+  /**
+   * trigger a exception on error
+   * @param content raw JSON response from serpapi.com
+   * @throws SerpApiSearchException wraps error message
+   */
   protected void triggerSerpApiClientException(String content) throws SerpApiSearchException {
     String errorMessage;
     try {

src/main/java/serpapi/SerpApiSearch.java

@@ -22,10 +22,14 @@ public class SerpApiSearch extends Exception {
    */ 
   public static String api_key_default;
 
-  // instance level key
+  /**
+   * user secret API key
+   */
   protected String api_key;
 
-  // current search engine
+  /**
+  * Current search engine
+  */
   protected String engine;
 
  /** 
@@ -91,7 +95,7 @@ public SerpApiSearch(String api_key, String engine) {
    * @param path backend HTTP path
    * @param output type of output format (json, html, json_with_images)
    * @return format parameter hash map
-   * @throws SerpApiSearchException
+   * @throws SerpApiSearchException wraps backend error message
    */
   public Map<String, String> buildQuery(String path, String output) throws SerpApiSearchException {
     // Initialize search if not done
@@ -134,8 +138,8 @@ public static String getApiKey() {
   /***
    * Get HTML output
    * 
-   * @return String
-   * @throws SerpApiSearchException
+   * @return raw HTML response from the search engine for custom parsing
+   * @throws SerpApiSearchException wraps backend error message
    */
   public String getHtml() throws SerpApiSearchException {
     Map<String, String> query = buildQuery("/search", "html");
@@ -146,7 +150,7 @@ public String getHtml() throws SerpApiSearchException {
    * Get JSON output
    * 
    * @return JsonObject parent node
-   * @throws SerpApiSearchException
+   * @throws SerpApiSearchException wraps backend error message
    */
   public JsonObject getJson() throws SerpApiSearchException {
     Map<String, String> query = buildQuery("/search", "json");
@@ -156,8 +160,8 @@ public JsonObject getJson() throws SerpApiSearchException {
   /***
    * Convert HTTP content to JsonValue
    * 
-   * @param content
-   * @return JsonObject
+   * @param content raw JSON HTTP response
+   * @return JsonObject created by gson parser
    */
   public JsonObject asJson(String content) {
     JsonElement element = gson.fromJson(content, JsonElement.class);
@@ -177,7 +181,7 @@ public SerpApiHttpClient getClient() {
    * @param q     query
    * @param limit number of location
    * @return JsonObject location using Location API
-   * @throws SerpApiSearchException
+   * @throws SerpApiSearchException wraps backend error message
    */
   public JsonArray getLocation(String q, Integer limit) throws SerpApiSearchException {
     Map<String, String> query = buildQuery("/locations.json", "json");
@@ -194,7 +198,7 @@ public JsonArray getLocation(String q, Integer limit) throws SerpApiSearchExcept
    * 
    * @param searchID archived search result = search_metadata.id
    * @return JsonObject search result
-   * @throws SerpApiSearchException
+   * @throws SerpApiSearchException wraps backend error message
    */
   public JsonObject getSearchArchive(String searchID) throws SerpApiSearchException {
     Map<String, String> query = buildQuery("/searches/" + searchID + ".json", "json");
@@ -207,7 +211,7 @@ public JsonObject getSearchArchive(String searchID) throws SerpApiSearchExceptio
    * Get account information using Account API
    * 
    * @return JsonObject account information
-   * @throws SerpApiSearchException
+   * @throws SerpApiSearchException wraps backend error message
    */
   public JsonObject getAccount() throws SerpApiSearchException {
     Map<String, String> query = buildQuery("/account", "json");

src/main/java/serpapi/YahooSearch.java

@@ -20,20 +20,32 @@
  */
 public class YahooSearch extends SerpApiSearch {
 
+ /**
+  * Constructor
+  * @param parameter search parameter
+  * @param apiKey secret API key
+  */
   public YahooSearch(Map<String, String> parameter, String apiKey) {
     super(parameter, apiKey, "yahoo");
   }
 
+ /**
+  * Constructor
+  */
   public YahooSearch() {
     super("yahoo");
   }
 
+ /**
+  * Constructor
+  * @param parameter search parameter
+  */
   public YahooSearch(Map<String, String> parameter) {
     super(parameter, "yahoo");
   }
 
   @Override
-   public JsonArray getLocation(String q, Integer limit) throws SerpApiSearchException {
-     throw new SerpApiSearchException("location is not supported for Baidu");
-   }
+  public JsonArray getLocation(String q, Integer limit) throws SerpApiSearchException {
+    throw new SerpApiSearchException("location is not supported for Baidu");
+  }
 }

src/main/java/serpapi/YandexSearch.java

@@ -20,20 +20,32 @@
  */
 public class YandexSearch extends SerpApiSearch {
 
+ /**
+  * Constructor
+  * @param parameter search parameter
+  * @param apiKey secret API key
+  */
   public YandexSearch(Map<String, String> parameter, String apiKey) {
     super(parameter, apiKey, "yandex");
   }
 
+ /**
+  * Constructor
+  */
   public YandexSearch() {
     super("yandex");
   }
 
+ /**
+  * Constructor
+  * @param parameter search parameter
+  */
   public YandexSearch(Map<String, String> parameter) {
     super(parameter, "yandex");
   }
 
   @Override
-   public JsonArray getLocation(String q, Integer limit) throws SerpApiSearchException {
-     throw new SerpApiSearchException("location is not supported for Baidu");
-   }
+  public JsonArray getLocation(String q, Integer limit) throws SerpApiSearchException {
+    throw new SerpApiSearchException("location is not supported for Baidu");
+  }
 }