[java] Consistent UTF-8 Encoding and Code Enhancements (#14218)

* made the use of UTF8 encoding consistent throughout

* replaced for loop with enchanced for in DockerOptions

* removed unnecessary unboxing in test noErrorNoCry

* applied format.sh

---------

Co-authored-by: Diego Molina <[email protected]>

Author: iampopovich

java/src/org/openqa/selenium/grid/distributor/local/LocalDistributor.java

@@ -878,11 +878,7 @@ protected Node getNodeFromURI(URI uri) {
           model.getSnapshot().stream()
               .filter(node -> node.getExternalUri().equals(uri))
               .findFirst();
-      if (nodeStatus.isPresent()) {
-        return nodes.get(nodeStatus.get().getNodeId());
-      } else {
-        return null;
-      }
+      return nodeStatus.map(status -> nodes.get(status.getNodeId())).orElse(null);
     } finally {
       readLock.unlock();
     }

java/src/org/openqa/selenium/grid/node/docker/DockerOptions.java

@@ -207,8 +207,8 @@ protected List<Device> getDevicesMapping() {
         config.getAll(DOCKER_SECTION, "devices").orElseGet(Collections::emptyList);
 
     List<Device> deviceMapping = new ArrayList<>();
-    for (int i = 0; i < devices.size(); i++) {
-      String deviceMappingDefined = devices.get(i).trim();
+    for (String device : devices) {
+      String deviceMappingDefined = device.trim();
       Matcher matcher =
           linuxDeviceMappingWithDefaultPermissionsPattern.matcher(deviceMappingDefined);
 

java/src/org/openqa/selenium/net/Urls.java

@@ -19,12 +19,12 @@
 
 import java.io.IOException;
 import java.io.UncheckedIOException;
-import java.io.UnsupportedEncodingException;
 import java.net.MalformedURLException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
 import java.util.regex.Pattern;
 import org.openqa.selenium.internal.Require;
 
@@ -42,11 +42,7 @@ private Urls() {
    * @see URLEncoder#encode(java.lang.String, java.lang.String)
    */
   public static String urlEncode(String value) {
-    try {
-      return URLEncoder.encode(value, "UTF-8");
-    } catch (UnsupportedEncodingException e) {
-      throw new UncheckedIOException(e);
-    }
+    return URLEncoder.encode(value, StandardCharsets.UTF_8);
   }
 
   public static URL fromUri(URI uri) {

java/src/org/openqa/selenium/remote/http/FormEncodedData.java

@@ -90,6 +90,6 @@ private static String read(Reader reader, Charset charSet, char delimiter, Atomi
       builder.append(c);
     }
 
-    return URLDecoder.decode(builder.toString(), charSet.toString());
+    return URLDecoder.decode(builder.toString(), charSet);
   }
 }

java/test/org/openqa/selenium/ReferrerTest.java

@@ -31,7 +31,6 @@
 import com.google.common.net.HostAndPort;
 import java.io.IOException;
 import java.io.UncheckedIOException;
-import java.io.UnsupportedEncodingException;
 import java.net.URI;
 import java.net.URLEncoder;
 import java.nio.file.Files;
@@ -169,11 +168,7 @@ void basicHistoryNavigationWithADirectProxy() {
   }
 
   private static String encode(String url) {
-    try {
-      return URLEncoder.encode(url, UTF_8.name());
-    } catch (UnsupportedEncodingException e) {
-      throw new RuntimeException("UTF-8 should always be supported!", e);
-    }
+    return URLEncoder.encode(url, UTF_8);
   }
 
   private void performNavigation(WebDriver driver, String firstUrl) {

java/test/org/openqa/selenium/docker/v1_41/ListImagesTest.java

@@ -21,8 +21,8 @@
 import static org.openqa.selenium.json.Json.MAP_TYPE;
 import static org.openqa.selenium.remote.http.Contents.utf8String;
 
-import java.io.UnsupportedEncodingException;
 import java.net.URLDecoder;
+import java.nio.charset.StandardCharsets;
 import java.util.Map;
 import java.util.Set;
 import org.junit.jupiter.api.Test;
@@ -41,26 +41,22 @@ void shouldReturnImageIfTagIsPresent() {
     HttpHandler handler =
         req -> {
           String filters = req.getQueryParameter("filters");
-          try {
-            String decoded = URLDecoder.decode(filters, "UTF-8");
-            Map<String, Object> raw = new Json().toType(decoded, MAP_TYPE);
+          String decoded = URLDecoder.decode(filters, StandardCharsets.UTF_8);
+          Map<String, Object> raw = new Json().toType(decoded, MAP_TYPE);
 
-            Map<?, ?> rawRef = (Map<?, ?>) raw.get("reference");
-            assertThat(rawRef.get("selenium/standalone-firefox:latest")).isEqualTo(true);
+          Map<?, ?> rawRef = (Map<?, ?>) raw.get("reference");
+          assertThat(rawRef.get("selenium/standalone-firefox:latest")).isEqualTo(true);
 
-            return new HttpResponse()
-                .addHeader("Content-Type", "application/json")
-                .setContent(
-                    utf8String(
-                        "[{\"Containers\":-1,\"Created\":1581716253,"
-                            + "\"Id\":\"sha256:bc24341497a00a3afbf04c518cb4bf98834d933ae331d1c5d3cd6f52c079049e\","
-                            + "\"Labels\":{\"authors\":\"SeleniumHQ\"},\"ParentId\":\"\","
-                            + "\"RepoDigests\":null,"
-                            + "\"RepoTags\":[\"selenium/standalone-firefox:latest\"],"
-                            + "\"SharedSize\":-1,\"Size\":765131593,\"VirtualSize\":765131593}]"));
-          } catch (UnsupportedEncodingException ignore) {
-            return null;
-          }
+          return new HttpResponse()
+              .addHeader("Content-Type", "application/json")
+              .setContent(
+                  utf8String(
+                      "[{\"Containers\":-1,\"Created\":1581716253,"
+                          + "\"Id\":\"sha256:bc24341497a00a3afbf04c518cb4bf98834d933ae331d1c5d3cd6f52c079049e\","
+                          + "\"Labels\":{\"authors\":\"SeleniumHQ\"},\"ParentId\":\"\","
+                          + "\"RepoDigests\":null,"
+                          + "\"RepoTags\":[\"selenium/standalone-firefox:latest\"],"
+                          + "\"SharedSize\":-1,\"Size\":765131593,\"VirtualSize\":765131593}]"));
         };
 
     Reference reference = Reference.parse("selenium/standalone-firefox:latest");

java/test/org/openqa/selenium/grid/MainTest.java

@@ -21,7 +21,6 @@
 
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
-import java.io.UnsupportedEncodingException;
 import java.nio.charset.StandardCharsets;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -38,11 +37,7 @@ public void init() {
   }
 
   private PrintStream toPrintStream(ByteArrayOutputStream baos) {
-    try {
-      return new PrintStream(baos, true, StandardCharsets.UTF_8.name());
-    } catch (UnsupportedEncodingException e) {
-      throw new RuntimeException(e);
-    }
+    return new PrintStream(baos, true, StandardCharsets.UTF_8);
   }
 
   @Test

java/test/org/openqa/selenium/remote/codec/w3c/W3CHttpResponseCodecTest.java

@@ -52,7 +52,7 @@ void noErrorNoCry() {
 
     Response decoded = new W3CHttpResponseCodec().decode(response);
 
-    assertThat(decoded.getStatus().intValue()).isEqualTo(ErrorCodes.SUCCESS);
+    assertThat(decoded.getStatus()).isEqualTo(ErrorCodes.SUCCESS);
     assertThat(decoded.getState()).isEqualTo("success");
     assertThat(decoded.getValue()).isEqualTo("cheese");
   }

java/test/org/openqa/selenium/remote/http/FormEncodedDataTest.java

@@ -27,7 +27,6 @@
 
 import com.google.common.collect.ImmutableMap;
 import com.google.common.net.MediaType;
-import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -133,15 +132,11 @@ private HttpRequest createRequest(String key, String value, String... others) {
       if (!isFirst) {
         content.append("&");
       }
-      try {
-        content.append(URLEncoder.encode(iterator.next(), UTF_8.toString()));
-
-        String next = iterator.next();
-        if (next != null) {
-          content.append("=").append(URLEncoder.encode(next, UTF_8.toString()));
-        }
-      } catch (UnsupportedEncodingException e) {
-        fail(e.getMessage());
+      content.append(URLEncoder.encode(iterator.next(), UTF_8));
+
+      String next = iterator.next();
+      if (next != null) {
+        content.append("=").append(URLEncoder.encode(next, UTF_8));
       }
       if (isFirst) {
         isFirst = false;