Remove redundant "extends Object"

Author: fmbenhassine

spring-batch-core/src/main/java/org/springframework/batch/core/step/item/DefaultItemFailureHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2022 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -46,7 +46,7 @@ public void onReadError(Exception ex) {
 	}
 
 	@Override
-	public void onWriteError(Exception ex, Chunk<? extends Object> item) {
+	public void onWriteError(Exception ex, Chunk<?> item) {
 		try {
 			logger.error("Error encountered while writing item: [ " + item + "]", ex);
 		}

spring-batch-core/src/test/java/org/springframework/batch/core/configuration/xml/DummyItemWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2009-2022 the original author or authors.
+ * Copyright 2009-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,7 @@
 public class DummyItemWriter implements ItemWriter<Object> {
 
 	@Override
-	public void write(Chunk<? extends Object> items) throws Exception {
+	public void write(Chunk<?> items) throws Exception {
 	}
 
 }

spring-batch-core/src/test/java/org/springframework/batch/core/step/item/SimpleStepFactoryBeanTests.java

@@ -256,7 +256,7 @@ class AssertingWriteListener extends StepListenerSupport<Object, Object> {
 			String trail = "";
 
 			@Override
-			public void beforeWrite(Chunk<? extends Object> chunk) {
+			public void beforeWrite(Chunk<?> chunk) {
 				if (chunk.getItems().contains("error")) {
 					throw new RuntimeException("rollback the last chunk");
 				}
@@ -265,7 +265,7 @@ public void beforeWrite(Chunk<? extends Object> chunk) {
 			}
 
 			@Override
-			public void afterWrite(Chunk<? extends Object> items) {
+			public void afterWrite(Chunk<?> items) {
 				trail = trail + "3";
 			}
 

spring-batch-infrastructure/src/main/java/org/springframework/batch/item/file/mapping/BeanWrapperFieldSetMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2021 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -389,7 +389,7 @@ public void setConversionService(ConversionService conversionService) {
 	 * @see CustomEditorConfigurer#setCustomEditors(Map)
 	 */
 	@Override
-	public void setCustomEditors(Map<? extends Object, ? extends PropertyEditor> customEditors) {
+	public void setCustomEditors(Map<?, ? extends PropertyEditor> customEditors) {
 		this.isCustomEditorsSet = true;
 		super.setCustomEditors(customEditors);
 	}

spring-batch-infrastructure/src/main/java/org/springframework/batch/support/DefaultPropertyEditorRegistrar.java

@@ -60,9 +60,9 @@ public void registerCustomEditors(PropertyEditorRegistry registry) {
 	 * PropertyEditor).
 	 * @see CustomEditorConfigurer#setCustomEditors(Map)
 	 */
-	public void setCustomEditors(Map<? extends Object, ? extends PropertyEditor> customEditors) {
+	public void setCustomEditors(Map<?, ? extends PropertyEditor> customEditors) {
 		this.customEditors = new HashMap<>();
-		for (Entry<? extends Object, ? extends PropertyEditor> entry : customEditors.entrySet()) {
+		for (Entry<?, ? extends PropertyEditor> entry : customEditors.entrySet()) {
 			Object key = entry.getKey();
 			Class<?> requiredType = null;
 			if (key instanceof Class<?>) {

spring-batch-integration/src/test/java/org/springframework/batch/integration/partition/ExampleItemWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022 the original author or authors.
+ * Copyright 2022-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -31,7 +31,7 @@ public class ExampleItemWriter implements ItemWriter<Object> {
 	/**
 	 * @see ItemWriter#write(Chunk)
 	 */
-	public void write(Chunk<? extends Object> data) throws Exception {
+	public void write(Chunk<?> data) throws Exception {
 		log.info(data);
 	}
 

spring-batch-samples/src/main/java/org/springframework/batch/sample/common/InfiniteLoopWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2022 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -53,7 +53,7 @@ public InfiniteLoopWriter() {
 	}
 
 	@Override
-	public void write(Chunk<? extends Object> items) throws Exception {
+	public void write(Chunk<?> items) throws Exception {
 		try {
 			Thread.sleep(500);
 		}

spring-batch-samples/src/main/java/org/springframework/batch/sample/support/DummyItemWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2022 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,7 @@
 public class DummyItemWriter implements ItemWriter<Object> {
 
 	@Override
-	public void write(Chunk<? extends Object> item) throws Exception {
+	public void write(Chunk<?> items) throws Exception {
 		// NO-OP
 		Thread.sleep(500);
 	}