Polish "Use try-with-resources to close resources automatically"

- Apply code formatting
- Use try-with-resources in many other places that were missed in the
  pull request

Closes gh-8045

spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/MetadataStore.java

@@ -64,13 +64,10 @@ public class MetadataStore {
 
 	public void writeMetadata(ConfigurationMetadata metadata) throws IOException {
 		if (!metadata.getItems().isEmpty()) {
-			OutputStream outputStream = createMetadataResource().openOutputStream();
-			try {
+			try (OutputStream outputStream = createMetadataResource()
+					.openOutputStream()) {
 				new JsonMarshaller().write(metadata, outputStream);
 			}
-			finally {
-				outputStream.close();
-			}
 		}
 	}
 

spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/ConfigurationMetadataAnnotationProcessorTests.java

@@ -815,13 +815,9 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 	}
 
 	private void writeMetadata(File metadataFile, JSONObject metadata) throws Exception {
-		FileWriter writer = new FileWriter(metadataFile);
-		try {
+		try (FileWriter writer = new FileWriter(metadataFile)) {
 			writer.append(metadata.toString(2));
 		}
-		finally {
-			writer.close();
-		}
 	}
 
 	private static class AdditionalMetadata {