Use diamond operator where possible

auto-configurations/mcp/spring-ai-autoconfigure-mcp-client/src/main/java/org/springframework/ai/mcp/client/autoconfigure/properties/McpStdioClientProperties.java

@@ -75,10 +75,9 @@ public Map<String, Parameters> getConnections() {
 
 	private Map<String, ServerParameters> resourceToServerParameters() {
 		try {
-			Map<String, Map<String, Parameters>> stdioConnection = new ObjectMapper().readValue(
-					this.serversConfiguration.getInputStream(),
-					new TypeReference<Map<String, Map<String, Parameters>>>() {
-					});
+			Map<String, Map<String, Parameters>> stdioConnection = new ObjectMapper()
+				.readValue(this.serversConfiguration.getInputStream(), new TypeReference<>() {
+				});
 
 			Map<String, Parameters> mcpServerJsonConfig = stdioConnection.entrySet().iterator().next().getValue();
 

auto-configurations/vector-stores/spring-ai-autoconfigure-vector-store-mongodb-atlas/src/main/java/org/springframework/ai/vectorstore/mongodb/autoconfigure/MongoDBAtlasVectorStoreAutoConfiguration.java

@@ -91,7 +91,7 @@ MongoDBAtlasVectorStore vectorStore(MongoTemplate mongoTemplate, EmbeddingModel
 
 	@Bean
 	public Converter<MimeType, String> mimeTypeToStringConverter() {
-		return new Converter<MimeType, String>() {
+		return new Converter<>() {
 
 			@Override
 			public String convert(MimeType source) {
@@ -102,7 +102,7 @@ public String convert(MimeType source) {
 
 	@Bean
 	public Converter<String, MimeType> stringToMimeTypeConverter() {
-		return new Converter<String, MimeType>() {
+		return new Converter<>() {
 
 			@Override
 			public MimeType convert(String source) {

document-readers/pdf-reader/src/main/java/org/springframework/ai/reader/pdf/layout/ForkPDFLayoutTextStripper.java

@@ -54,7 +54,7 @@ public class ForkPDFLayoutTextStripper extends PDFTextStripper {
 	public ForkPDFLayoutTextStripper() throws IOException {
 		super();
 		this.previousTextPosition = null;
-		this.textLineList = new ArrayList<TextLine>();
+		this.textLineList = new ArrayList<>();
 	}
 
 	/**
@@ -67,7 +67,7 @@ public void processPage(PDPage page) throws IOException {
 			this.setCurrentPageWidth(pageRectangle.getWidth() * 1.4);
 			super.processPage(page);
 			this.previousTextPosition = null;
-			this.textLineList = new ArrayList<TextLine>();
+			this.textLineList = new ArrayList<>();
 		}
 	}
 
@@ -124,7 +124,7 @@ private void writeLine(final List<TextPosition> textPositionList) {
 	}
 
 	private void iterateThroughTextList(Iterator<TextPosition> textIterator) {
-		List<TextPosition> textPositionList = new ArrayList<TextPosition>();
+		List<TextPosition> textPositionList = new ArrayList<>();
 
 		while (textIterator.hasNext()) {
 			TextPosition textPosition = (TextPosition) textIterator.next();

document-readers/pdf-reader/src/main/java/org/springframework/ai/reader/pdf/layout/PDFLayoutTextStripperByArea.java

@@ -39,13 +39,13 @@
  */
 public class PDFLayoutTextStripperByArea extends ForkPDFLayoutTextStripper {
 
-	private final List<String> regions = new ArrayList<String>();
+	private final List<String> regions = new ArrayList<>();
 
-	private final Map<String, Rectangle2D> regionArea = new HashMap<String, Rectangle2D>();
+	private final Map<String, Rectangle2D> regionArea = new HashMap<>();
 
-	private final Map<String, ArrayList<List<TextPosition>>> regionCharacterList = new HashMap<String, ArrayList<List<TextPosition>>>();
+	private final Map<String, ArrayList<List<TextPosition>>> regionCharacterList = new HashMap<>();
 
-	private final Map<String, StringWriter> regionText = new HashMap<String, StringWriter>();
+	private final Map<String, StringWriter> regionText = new HashMap<>();
 
 	/**
 	 * Constructor.
@@ -113,8 +113,8 @@ public void extractRegions(PDPage page) throws IOException {
 			setStartPage(getCurrentPageNo());
 			setEndPage(getCurrentPageNo());
 			// reset the stored text for the region so this class can be reused.
-			ArrayList<List<TextPosition>> regionCharactersByArticle = new ArrayList<List<TextPosition>>();
-			regionCharactersByArticle.add(new ArrayList<TextPosition>());
+			ArrayList<List<TextPosition>> regionCharactersByArticle = new ArrayList<>();
+			regionCharactersByArticle.add(new ArrayList<>());
 			this.regionCharacterList.put(regionName, regionCharactersByArticle);
 			this.regionText.put(regionName, new StringWriter());
 		}

models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/EventParsingTests.java

@@ -44,7 +44,7 @@ public void readEvents() throws IOException {
 		String json = new DefaultResourceLoader().getResource("classpath:/sample_events.json")
 			.getContentAsString(Charset.defaultCharset());
 
-		List<StreamEvent> events = new ObjectMapper().readerFor(new TypeReference<List<StreamEvent>>() {
+		List<StreamEvent> events = new ObjectMapper().readerFor(new TypeReference<>() {
 
 		}).readValue(json);
 

models/spring-ai-anthropic/src/test/java/org/springframework/ai/anthropic/client/AnthropicChatClientIT.java

@@ -108,7 +108,7 @@ void listOutputConverterBean() {
 		List<ActorsFilms> actorsFilms = ChatClient.create(this.chatModel).prompt()
 				.user("Generate the filmography of 5 movies for Tom Hanks and Bill Murray.")
 				.call()
-				.entity(new ParameterizedTypeReference<List<ActorsFilms>>() {
+				.entity(new ParameterizedTypeReference<>() {
 				});
 		// @formatter:on
 
@@ -141,7 +141,7 @@ void mapOutputConverter() {
 				.user(u -> u.text("Provide me a List of {subject}")
 						.param("subject", "an array of numbers from 1 to 9 under they key name 'numbers'"))
 				.call()
-				.entity(new ParameterizedTypeReference<Map<String, Object>>() {
+				.entity(new ParameterizedTypeReference<>() {
 				});
 		// @formatter:on
 

models/spring-ai-bedrock-converse/src/test/java/org/springframework/ai/bedrock/converse/BedrockConverseChatClientIT.java

@@ -88,7 +88,7 @@ void listOutputConverterString() {
 				.user(u -> u.text("List five {subject}")
 						.param("subject", "ice cream flavors"))
 				.call()
-				.entity(new ParameterizedTypeReference<List<String>>() { });
+				.entity(new ParameterizedTypeReference<>() { });
 		// @formatter:on
 
 		logger.info(collection.toString());
@@ -102,7 +102,7 @@ void listOutputConverterBean() {
 		List<ActorsFilms> actorsFilms = ChatClient.create(this.chatModel).prompt()
 				.user("Generate the filmography of 5 movies for Tom Hanks and Bill Murray.")
 				.call()
-				.entity(new ParameterizedTypeReference<List<ActorsFilms>>() {
+				.entity(new ParameterizedTypeReference<>() {
 				});
 		// @formatter:on
 
@@ -135,7 +135,7 @@ void mapOutputConverter() {
 				.user(u -> u.text("Provide me a List of {subject}")
 						.param("subject", "an array of numbers from 1 to 9 under they key name 'numbers'"))
 				.call()
-				.entity(new ParameterizedTypeReference<Map<String, Object>>() {
+				.entity(new ParameterizedTypeReference<>() {
 				});
 		// @formatter:on
 

models/spring-ai-huggingface/src/main/java/org/springframework/ai/huggingface/HuggingfaceChatModel.java

@@ -101,7 +101,7 @@ public ChatResponse call(Prompt prompt) {
 			String generatedText = generateResponse.getGeneratedText();
 			AllOfGenerateResponseDetails allOfGenerateResponseDetails = generateResponse.getDetails();
 			Map<String, Object> detailsMap = this.objectMapper.convertValue(allOfGenerateResponseDetails,
-					new TypeReference<Map<String, Object>>() {
+					new TypeReference<>() {
 
 					});
 			Generation generation = new Generation(new AssistantMessage(generatedText, detailsMap));

models/spring-ai-mistral-ai/src/test/java/org/springframework/ai/mistralai/MistralAiChatClientIT.java

@@ -123,7 +123,7 @@ void listOutputConverterBean() {
 		List<ActorsFilms> actorsFilms = ChatClient.create(this.chatModel).prompt()
 				.user("Generate the filmography of 5 movies for Tom Hanks and Bill Murray.")
 				.call()
-				.entity(new ParameterizedTypeReference<List<ActorsFilms>>() {
+				.entity(new ParameterizedTypeReference<>() {
 				});
 		// @formatter:on
 
@@ -156,7 +156,7 @@ void mapOutputConverter() {
 				.user(u -> u.text("Provide me a List of {subject}")
 						.param("subject", "an array of numbers from 1 to 9 under they key name 'numbers'"))
 				.call()
-				.entity(new ParameterizedTypeReference<Map<String, Object>>() {
+				.entity(new ParameterizedTypeReference<>() {
 				});
 		// @formatter:on
 

models/spring-ai-openai/src/test/java/org/springframework/ai/openai/chat/OpenAiChatModelTypeReferenceBeanOutputConverterIT.java

@@ -49,7 +49,7 @@ class OpenAiChatModelTypeReferenceBeanOutputConverterIT extends AbstractIT {
 	void typeRefOutputConverterRecords() {
 
 		BeanOutputConverter<List<ActorsFilmsRecord>> outputConverter = new BeanOutputConverter<>(
-				new ParameterizedTypeReference<List<ActorsFilmsRecord>>() {
+				new ParameterizedTypeReference<>() {
 
 				});
 
@@ -78,7 +78,7 @@ void typeRefOutputConverterRecords() {
 	void typeRefStreamOutputConverterRecords() {
 
 		BeanOutputConverter<List<ActorsFilmsRecord>> outputConverter = new BeanOutputConverter<>(
-				new ParameterizedTypeReference<List<ActorsFilmsRecord>>() {
+				new ParameterizedTypeReference<>() {
 
 				});
 

models/spring-ai-openai/src/test/java/org/springframework/ai/openai/chat/OpenAiPaymentTransactionIT.java

@@ -85,7 +85,7 @@ public void transactionPaymentStatuses(String functionName) {
 					What is the status of my payment transactions 001, 002 and 003?
 					""")
 			.call()
-			.entity(new ParameterizedTypeReference<List<TransactionStatusResponse>>() {
+			.entity(new ParameterizedTypeReference<>() {
 
 			});
 

models/spring-ai-openai/src/test/java/org/springframework/ai/openai/chat/client/OpenAiChatClientIT.java

@@ -125,7 +125,7 @@ void listOutputConverterString() {
 				.user(u -> u.text("List five {subject}")
 						.param("subject", "ice cream flavors"))
 				.call()
-				.entity(new ParameterizedTypeReference<List<String>>() {
+				.entity(new ParameterizedTypeReference<>() {
 				});
 		// @formatter:on
 
@@ -140,7 +140,7 @@ void listOutputConverterBean() {
 		List<ActorsFilms> actorsFilms = ChatClient.create(this.chatModel).prompt()
 				.user("Generate the filmography of 5 movies for Tom Hanks and Bill Murray.")
 				.call()
-				.entity(new ParameterizedTypeReference<List<ActorsFilms>>() {
+				.entity(new ParameterizedTypeReference<>() {
 				});
 		// @formatter:on
 
@@ -173,7 +173,7 @@ void mapOutputConverter() {
 				.user(u -> u.text("Provide me a List of {subject}")
 						.param("subject", "an array of numbers from 1 to 9 under they key name 'numbers'"))
 				.call()
-				.entity(new ParameterizedTypeReference<Map<String, Object>>() {
+				.entity(new ParameterizedTypeReference<>() {
 				});
 		// @formatter:on
 

spring-ai-client-chat/src/main/java/org/springframework/ai/chat/client/DefaultChatClient.java

@@ -363,13 +363,13 @@ public DefaultCallResponseSpec(ChatClientRequest chatClientRequest, BaseAdvisorC
 		@Override
 		public <T> ResponseEntity<ChatResponse, T> responseEntity(Class<T> type) {
 			Assert.notNull(type, "type cannot be null");
-			return doResponseEntity(new BeanOutputConverter<T>(type));
+			return doResponseEntity(new BeanOutputConverter<>(type));
 		}
 
 		@Override
 		public <T> ResponseEntity<ChatResponse, T> responseEntity(ParameterizedTypeReference<T> type) {
 			Assert.notNull(type, "type cannot be null");
-			return doResponseEntity(new BeanOutputConverter<T>(type));
+			return doResponseEntity(new BeanOutputConverter<>(type));
 		}
 
 		@Override

spring-ai-client-chat/src/test/java/org/springframework/ai/chat/client/ChatClientResponseEntityTests.java

@@ -98,7 +98,7 @@ public void parametrizedResponseEntityTest() {
 			.prompt()
 			.user("Tell me about them")
 			.call()
-			.responseEntity(new ParameterizedTypeReference<List<MyBean>>() {
+			.responseEntity(new ParameterizedTypeReference<>() {
 
 			});
 

spring-ai-commons/src/main/java/org/springframework/ai/document/DefaultContentFormatter.java

@@ -124,10 +124,10 @@ public String format(Document document, MetadataMode metadataMode) {
 	protected Map<String, Object> metadataFilter(Map<String, Object> metadata, MetadataMode metadataMode) {
 
 		if (metadataMode == MetadataMode.ALL) {
-			return new HashMap<String, Object>(metadata);
+			return new HashMap<>(metadata);
 		}
 		if (metadataMode == MetadataMode.NONE) {
-			return new HashMap<String, Object>(Collections.emptyMap());
+			return new HashMap<>(Collections.emptyMap());
 		}
 
 		Set<String> usableMetadataKeys = new HashSet<>(metadata.keySet());
@@ -139,7 +139,7 @@ else if (metadataMode == MetadataMode.EMBED) {
 			usableMetadataKeys.removeAll(this.excludedEmbedMetadataKeys);
 		}
 
-		return new HashMap<String, Object>(metadata.entrySet()
+		return new HashMap<>(metadata.entrySet()
 			.stream()
 			.filter(e -> usableMetadataKeys.contains(e.getKey()))
 			.collect(Collectors.toMap(e -> e.getKey(), e -> e.getValue())));

spring-ai-commons/src/main/java/org/springframework/ai/reader/JsonReader.java

@@ -90,7 +90,7 @@ public List<Document> get() {
 	}
 
 	private Document parseJsonNode(JsonNode jsonNode, ObjectMapper objectMapper) {
-		Map<String, Object> item = objectMapper.convertValue(jsonNode, new TypeReference<Map<String, Object>>() {
+		Map<String, Object> item = objectMapper.convertValue(jsonNode, new TypeReference<>() {
 
 		});
 		var sb = new StringBuilder();

spring-ai-commons/src/test/java/org/springframework/ai/template/NoOpTemplateRendererTests.java

@@ -86,7 +86,7 @@ void shouldNotAcceptNullVariables() {
 	void shouldNotAcceptVariablesWithNullKeySet() {
 		NoOpTemplateRenderer renderer = new NoOpTemplateRenderer();
 		String template = "Hello!";
-		Map<String, Object> variables = new HashMap<String, Object>();
+		Map<String, Object> variables = new HashMap<>();
 		variables.put(null, "Spring AI");
 
 		assertThatThrownBy(() -> renderer.apply(template, variables)).isInstanceOf(IllegalArgumentException.class)

spring-ai-model/src/main/java/org/springframework/ai/chat/model/MessageAggregator.java

@@ -60,9 +60,9 @@ public Flux<ChatResponse> aggregate(Flux<ChatResponse> fluxChatResponse,
 				ChatGenerationMetadata.NULL);
 
 		// Usage
-		AtomicReference<Integer> metadataUsagePromptTokensRef = new AtomicReference<Integer>(0);
-		AtomicReference<Integer> metadataUsageGenerationTokensRef = new AtomicReference<Integer>(0);
-		AtomicReference<Integer> metadataUsageTotalTokensRef = new AtomicReference<Integer>(0);
+		AtomicReference<Integer> metadataUsagePromptTokensRef = new AtomicReference<>(0);
+		AtomicReference<Integer> metadataUsageGenerationTokensRef = new AtomicReference<>(0);
+		AtomicReference<Integer> metadataUsageTotalTokensRef = new AtomicReference<>(0);
 
 		AtomicReference<PromptMetadata> metadataPromptMetadataRef = new AtomicReference<>(PromptMetadata.empty());
 		AtomicReference<RateLimit> metadataRateLimitRef = new AtomicReference<>(new EmptyRateLimit());

spring-ai-model/src/main/java/org/springframework/ai/model/EmbeddingUtils.java

@@ -72,7 +72,7 @@ public static Float[] toFloatArray(final float[] array) {
 
 	public static List<Float> toList(float[] floats) {
 
-		List<Float> output = new ArrayList<Float>();
+		List<Float> output = new ArrayList<>();
 		for (float value : floats) {
 			output.add(value);
 		}

spring-ai-model/src/main/java/org/springframework/ai/model/ModelOptionsUtils.java

@@ -74,11 +74,11 @@ public abstract class ModelOptionsUtils {
 
 	private static final List<String> BEAN_MERGE_FIELD_EXCISIONS = List.of("class");
 
-	private static final ConcurrentHashMap<Class<?>, List<String>> REQUEST_FIELD_NAMES_PER_CLASS = new ConcurrentHashMap<Class<?>, List<String>>();
+	private static final ConcurrentHashMap<Class<?>, List<String>> REQUEST_FIELD_NAMES_PER_CLASS = new ConcurrentHashMap<>();
 
 	private static final AtomicReference<SchemaGenerator> SCHEMA_GENERATOR_CACHE = new AtomicReference<>();
 
-	private static TypeReference<HashMap<String, Object>> MAP_TYPE_REF = new TypeReference<HashMap<String, Object>>() {
+	private static TypeReference<HashMap<String, Object>> MAP_TYPE_REF = new TypeReference<>() {
 
 	};
 

spring-ai-template-st/src/test/java/org/springframework/ai/template/st/StTemplateRendererTests.java

@@ -94,7 +94,7 @@ void shouldNotAcceptNullVariables() {
 	void shouldNotAcceptVariablesWithNullKeySet() {
 		StTemplateRenderer renderer = StTemplateRenderer.builder().build();
 		String template = "Hello!";
-		Map<String, Object> variables = new HashMap<String, Object>();
+		Map<String, Object> variables = new HashMap<>();
 		variables.put(null, "Spring AI");
 
 		assertThatThrownBy(() -> renderer.apply(template, variables)).isInstanceOf(IllegalArgumentException.class)

vector-stores/spring-ai-azure-cosmos-db-store/src/main/java/org/springframework/ai/vectorstore/cosmosdb/CosmosDBVectorStore.java

@@ -151,7 +151,7 @@ private void initializeContainer(String containerName, String databaseName, int
 
 		// handle hierarchical partition key
 		PartitionKeyDefinition subPartitionKeyDefinition = new PartitionKeyDefinition();
-		List<String> pathsFromCommaSeparatedList = new ArrayList<String>();
+		List<String> pathsFromCommaSeparatedList = new ArrayList<>();
 		String[] subPartitionKeyPaths = partitionKeyPath.split(",");
 		Collections.addAll(pathsFromCommaSeparatedList, subPartitionKeyPaths);
 		if (subPartitionKeyPaths.length > 1) {

vector-stores/spring-ai-azure-store/src/main/java/org/springframework/ai/vectorstore/azure/AzureVectorStore.java

@@ -240,7 +240,7 @@ public List<Document> doSimilaritySearch(SearchRequest request) {
 				final AzureSearchDocument entry = result.getDocument(AzureSearchDocument.class);
 
 				Map<String, Object> metadata = (StringUtils.hasText(entry.metadata()))
-						? JSONObject.parseObject(entry.metadata(), new TypeReference<Map<String, Object>>() {
+						? JSONObject.parseObject(entry.metadata(), new TypeReference<>() {
 
 						}) : Map.of();
 

vector-stores/spring-ai-mongodb-atlas-store/src/test/java/org/springframework/ai/vectorstore/mongodb/atlas/MongoDBAtlasVectorStoreIT.java

@@ -350,7 +350,7 @@ public EmbeddingModel embeddingModel() {
 
 		@Bean
 		public Converter<MimeType, String> mimeTypeToStringConverter() {
-			return new Converter<MimeType, String>() {
+			return new Converter<>() {
 
 				@Override
 				public String convert(MimeType source) {
@@ -361,7 +361,7 @@ public String convert(MimeType source) {
 
 		@Bean
 		public Converter<String, MimeType> stringToMimeTypeConverter() {
-			return new Converter<String, MimeType>() {
+			return new Converter<>() {
 
 				@Override
 				public MimeType convert(String source) {

vector-stores/spring-ai-mongodb-atlas-store/src/test/java/org/springframework/ai/vectorstore/mongodb/atlas/MongoDbVectorStoreObservationIT.java

@@ -214,7 +214,7 @@ public EmbeddingModel embeddingModel() {
 
 		@Bean
 		public Converter<MimeType, String> mimeTypeToStringConverter() {
-			return new Converter<MimeType, String>() {
+			return new Converter<>() {
 
 				@Override
 				public String convert(MimeType source) {
@@ -225,7 +225,7 @@ public String convert(MimeType source) {
 
 		@Bean
 		public Converter<String, MimeType> stringToMimeTypeConverter() {
-			return new Converter<String, MimeType>() {
+			return new Converter<>() {
 
 				@Override
 				public MimeType convert(String source) {

vector-stores/spring-ai-pgvector-store/src/main/java/org/springframework/ai/vectorstore/pgvector/PgVectorStore.java

@@ -378,7 +378,7 @@ public List<Document> doSimilaritySearch(SearchRequest request) {
 	public List<Double> embeddingDistance(String query) {
 		return this.jdbcTemplate.query(
 				"SELECT embedding " + this.comparisonOperator() + " ? AS distance FROM " + getFullyQualifiedTableName(),
-				new RowMapper<Double>() {
+				new RowMapper<>() {
 
 					@Override
 					public Double mapRow(ResultSet rs, int rowNum) throws SQLException {