[java] Consistent UTF-8 Encoding and Code Enhancements

[iampopovich]

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Description

• Ensured consistent use of UTF-8 encoding throughout the codebase.
• Replaced traditional for loop with enhanced for-each loop in DockerOptions.
• Removed unnecessary unboxing in the noErrorNoCry test.

Motivation and Context

These changes improve code readability, maintainability, and performance.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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PR Type

Enhancement, Bug fix

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Description

• Ensured consistent use of UTF-8 encoding throughout the codebase by replacing UnsupportedEncodingException handling with StandardCharsets.UTF_8.
• Simplified node retrieval logic in LocalDistributor using Optional.map.
• Replaced traditional for loop with enhanced for-each loop in DockerOptions.
• Removed unnecessary unboxing in the noErrorNoCry test.

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Changes walkthrough 📝

	Relevant files
Enhancement	8 files LocalDistributor.java Simplified node retrieval logic with Optional.map                java/src/org/openqa/selenium/grid/distributor/local/LocalDistributor.java Simplified node retrieval logic using Optional.map. +1/-5      DockerOptions.java Replaced traditional for loop with enhanced for-each loop java/src/org/openqa/selenium/grid/node/docker/DockerOptions.java Replaced traditional for loop with enhanced for-each loop. +2/-2      Urls.java Use StandardCharsets.UTF_8 for URL encoding                            java/src/org/openqa/selenium/net/Urls.java Replaced UnsupportedEncodingException handling with StandardCharsets.UTF_8. +2/-6      FormEncodedData.java Use StandardCharsets.UTF_8 for URL decoding                            java/src/org/openqa/selenium/remote/http/FormEncodedData.java Replaced charset string with StandardCharsets.UTF_8 in URL decoding. +1/-1      ReferrerTest.java Simplified URL encoding in tests                                                  java/test/org/openqa/selenium/ReferrerTest.java Simplified URL encoding by removing UnsupportedEncodingException handling. +1/-6      ListImagesTest.java Use StandardCharsets.UTF_8 for URL decoding in tests          java/test/org/openqa/selenium/docker/v1_41/ListImagesTest.java Replaced UnsupportedEncodingException handling with StandardCharsets.UTF_8. +15/-19  MainTest.java Simplified PrintStream creation in tests                                  java/test/org/openqa/selenium/grid/MainTest.java Simplified PrintStream creation by removing UnsupportedEncodingException handling. +1/-6      FormEncodedDataTest.java Simplified URL encoding in tests                                                  java/test/org/openqa/selenium/remote/http/FormEncodedDataTest.java Simplified URL encoding by removing UnsupportedEncodingException handling. +5/-10
Bug fix	1 files W3CHttpResponseCodecTest.java Removed unnecessary unboxing in test assertions                    java/test/org/openqa/selenium/remote/codec/w3c/W3CHttpResponseCodecTest.java Removed unnecessary unboxing in assertions. +1/-1

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PR Reviewer Guide 🔍

⏱️ Estimated effort to review [1-5]	2
🧪 Relevant tests	No
🔒 Security concerns	No
⚡ Key issues to review	Possible Bug: The refactoring in LocalDistributor.java uses map and orElse which might not be equivalent to the original logic if getNodeId() can return null and is expected to be handled.
	Code Improvement: In DockerOptions.java, the change from index-based loop to enhanced for-loop is good for readability but ensure that the logic inside the loop does not depend on the index.
	Code Cleanup: The changes in Urls.java, FormEncodedData.java, and various test files to use StandardCharsets.UTF_8 instead of "UTF-8" string are good for type safety and avoiding unnecessary exceptions.

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PR Code Suggestions ✨

Category	Suggestion	Score
Maintainability	Simplify the for-loop by removing unnecessary variable assignments Use the enhanced for-loop directly on the devices list without intermediate variable assignment for trimming, to simplify the loop and reduce redundancy. java/src/org/openqa/selenium/grid/node/docker/DockerOptions.java [210-211] for (String device : devices) { - String deviceMappingDefined = device.trim(); + Matcher matcher = linuxDeviceMappingWithDefaultPermissionsPattern.matcher(device.trim()); Apply this suggestion Suggestion importance[1-10]: 8 Why: This suggestion simplifies the loop and reduces redundancy, improving code readability and maintainability.	8
	Reduce variable usage by inlining expressions Inline the decoded variable directly into the toType method call to streamline the code and reduce the number of lines. java/test/org/openqa/selenium/docker/v1_41/ListImagesTest.java [44-45] -String decoded = URLDecoder.decode(filters, StandardCharsets.UTF_8); -Map<String, Object> raw = new Json().toType(decoded, MAP_TYPE); +Map<String, Object> raw = new Json().toType(URLDecoder.decode(filters, StandardCharsets.UTF_8), MAP_TYPE); Apply this suggestion Suggestion importance[1-10]: 7 Why: Inlining the variable reduces the number of lines and simplifies the code, making it more concise without losing clarity.	7
Enhancement	Improve readability and explicit handling of optional values Consider using Optional.ifPresentOrElse to handle the optional value more explicitly instead of map().orElse(). This can make the code more readable by clearly separating the actions for present and absent cases. java/src/org/openqa/selenium/grid/distributor/local/LocalDistributor.java [881] -return nodeStatus.map(status -> nodes.get(status.getNodeId())).orElse(null); +nodeStatus.ifPresentOrElse( + status -> return nodes.get(status.getNodeId()), + () -> return null +); Apply this suggestion Suggestion importance[1-10]: 7 Why: The suggestion improves readability and explicitly handles the optional value, making the code more maintainable. However, the current implementation is also correct and clear.	7
Best practice	Use static import for UTF_8 to clean up the code Since StandardCharsets.UTF_8 is a constant, you can import it statically to make the code cleaner. java/src/org/openqa/selenium/net/Urls.java [45] -return URLEncoder.encode(value, StandardCharsets.UTF_8); +import static java.nio.charset.StandardCharsets.UTF_8; +... +return URLEncoder.encode(value, UTF_8); Suggestion importance[1-10]: 6 Why: Using a static import for UTF_8 can clean up the code slightly, but the improvement is minor and more a matter of style preference.	6