Adjusted to use 17 source and 8 target version. Code refactoring. Docs improvements.

build.gradle

@@ -17,12 +17,22 @@ dependencies {
     implementation 'org.slf4j:slf4j-api:1.7.36'
     testImplementation 'org.junit.platform:junit-platform-runner:1.8.2'
     testImplementation 'org.junit.jupiter:junit-jupiter-engine:5.8.2'
+
+    annotationProcessor 'com.github.bsideup.jabel:jabel-javac-plugin:0.4.2'
 }
 
 group = 'com.github.prominence'
 version = '3.0.0-SNAPSHOT'
 description = 'Java OpenWeatherMap API'
-java.sourceCompatibility = JavaVersion.VERSION_17
+
+configure([tasks.compileJava]) {
+    sourceCompatibility = 17 // for the IDE support
+    options.release = 8
+
+    javaCompiler = javaToolchains.compilerFor {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
+}
 
 ext {
     isReleaseVersion = !version.endsWith("SNAPSHOT")

docs/Release_1.0.md

@@ -15,7 +15,7 @@
 ### Gradle coordinates:
 
 ```groovy
-compile('com.github.prominence:openweathermap-api:1.0')
+implementation 'com.github.prominence:openweathermap-api:1.0'
 ```
 
 ### How to use:

docs/Release_1.1.md

@@ -18,7 +18,7 @@
 ### Gradle coordinates:
 
 ```groovy
-compile('com.github.prominence:openweathermap-api:1.1')
+implementation 'com.github.prominence:openweathermap-api:1.1'
 ```
 
 ### How to use:

docs/Release_1.2.md

@@ -18,7 +18,7 @@
 ### Gradle coordinates:
 
 ```groovy
-compile('com.github.prominence:openweathermap-api:1.2')
+implementation 'com.github.prominence:openweathermap-api:1.2'
 ```
 
 ### How to use:

docs/Release_2.0.0.md

@@ -15,7 +15,7 @@
 ### Gradle coordinates:
 
 ```groovy
-compile('com.github.prominence:openweathermap-api:2.0.0')
+implementation 'com.github.prominence:openweathermap-api:2.0.0'
 ```
 
 ### How to use:

docs/Release_2.0.1.md

@@ -15,7 +15,7 @@
 ### Gradle coordinates:
 
 ```groovy
-compile('com.github.prominence:openweathermap-api:2.0.1')
+implementation 'com.github.prominence:openweathermap-api:2.0.1'
 ```
 
 ### How to use:

docs/Release_2.1.0.md

@@ -16,7 +16,7 @@
 ### Gradle coordinates:
 
 ```groovy
-compile('com.github.prominence:openweathermap-api:2.1.0')
+implementation 'com.github.prominence:openweathermap-api:2.1.0'
 ```
 
 ### How to use:

docs/Release_2.1.1.md

@@ -16,7 +16,7 @@
 ### Gradle coordinates:
 
 ```groovy
-compile('com.github.prominence:openweathermap-api:2.1.1')
+implementation 'com.github.prominence:openweathermap-api:2.1.1'
 ```
 
 ### How to use:

docs/Release_2.2.0.md

@@ -17,7 +17,7 @@
 ### Gradle coordinates:
 
 ```groovy
-compile('com.github.prominence:openweathermap-api:2.2.0')
+implementation 'com.github.prominence:openweathermap-api:2.2.0'
 ```
 
 ### How to use:

docs/Release_2.3.0.md

@@ -21,7 +21,7 @@ Other:
 ### Gradle coordinates:
 
 ```groovy
-compile('com.github.prominence:openweathermap-api:2.3.0')
+implementation 'com.github.prominence:openweathermap-api:2.3.0'
 ```
 
 ### How to use:

src/main/java/com/github/prominence/openweathermap/api/enums/UnitSystem.java

@@ -52,14 +52,10 @@ public enum UnitSystem {
      * @return wind unit.
      */
     public String getWindUnit() {
-        switch (this) {
+        return switch (this) {
-            case IMPERIAL:
+            case IMPERIAL -> "miles/hour";
-                return "miles/hour";
+            case STANDARD, METRIC -> "meter/sec";
-            case STANDARD:
+        };
-            case METRIC:
-            default:
-                return "meter/sec";
-        }
     }
 
     /**
@@ -67,15 +63,11 @@ public enum UnitSystem {
      * @return temperature unit.
      */
     public String getTemperatureUnit() {
-        switch (this) {
+        return switch (this) {
-            case METRIC:
+            case METRIC -> "°C";
-                return "°C";
+            case IMPERIAL -> "°F";
-            case IMPERIAL:
+            case STANDARD -> "K";
-                return "°F";
+        };
-            case STANDARD:
-            default:
-                return "K";
-        }
     }
 
     /**

src/main/java/com/github/prominence/openweathermap/api/utils/RequestUtils.java

@@ -44,7 +44,7 @@ import java.util.stream.Collectors;
  */
 public final class RequestUtils {
 
-    private static final String OWM_URL_BASE = "http://api.openweathermap.org/data/2.5/";
+    private static final String OWM_URL_BASE = "https://api.openweathermap.org/data/2.5/";
 
     private static final Logger logger = LoggerFactory.getLogger(RequestUtils.class);
 
@@ -120,18 +120,13 @@ public final class RequestUtils {
 
             connection.setRequestMethod("GET");
 
-            switch (connection.getResponseCode()) {
+            resultStream = switch (connection.getResponseCode()) {
-                case HttpURLConnection.HTTP_OK:
+                case HttpURLConnection.HTTP_OK -> connection.getInputStream();
-                    resultStream = connection.getInputStream();
+                case HttpURLConnection.HTTP_UNAUTHORIZED -> throw new InvalidAuthTokenException();
-                    break;
+                case HttpURLConnection.HTTP_NOT_FOUND, HttpURLConnection.HTTP_BAD_REQUEST ->
-                case HttpURLConnection.HTTP_UNAUTHORIZED:
+                        throw new NoDataFoundException();
-                    throw new InvalidAuthTokenException();
+                default -> throw new IllegalStateException("Unexpected value: " + connection.getResponseCode());
-                case HttpURLConnection.HTTP_NOT_FOUND:
+            };
-                case HttpURLConnection.HTTP_BAD_REQUEST:
-                    throw new NoDataFoundException();
-                default:
-                    throw new IllegalStateException("Unexpected value: " + connection.getResponseCode());
-            }
         } catch (IllegalStateException | IOException ex) {
             logger.error("An error occurred during OpenWeatherMap API response parsing: ", ex);
             throw new NoDataFoundException(ex);