diff --git a/spring-context-support/src/main/java/org/springframework/cache/jcache/interceptor/CacheRemoveEntryInterceptor.java b/spring-context-support/src/main/java/org/springframework/cache/jcache/interceptor/CacheRemoveEntryInterceptor.java
index 19bbc2c27b..34d4fb4f05 100644
--- a/spring-context-support/src/main/java/org/springframework/cache/jcache/interceptor/CacheRemoveEntryInterceptor.java
+++ b/spring-context-support/src/main/java/org/springframework/cache/jcache/interceptor/CacheRemoveEntryInterceptor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -54,12 +54,12 @@ class CacheRemoveEntryInterceptor extends AbstractKeyCacheInterceptor<CacheRemov
 			}
 			return result;
 		}
-		catch (CacheOperationInvoker.ThrowableWrapper t) {
-			Throwable ex = t.getOriginal();
+		catch (CacheOperationInvoker.ThrowableWrapper wrapperException) {
+			Throwable ex = wrapperException.getOriginal();
 			if (!earlyRemove && operation.getExceptionTypeFilter().match(ex.getClass())) {
 				removeValue(context);
 			}
-			throw t;
+			throw wrapperException;
 		}
 	}
 
diff --git a/spring-context/src/main/java/org/springframework/scheduling/concurrent/ThreadPoolTaskScheduler.java b/spring-context/src/main/java/org/springframework/scheduling/concurrent/ThreadPoolTaskScheduler.java
index ccddbf96dd..960952f9f1 100644
--- a/spring-context/src/main/java/org/springframework/scheduling/concurrent/ThreadPoolTaskScheduler.java
+++ b/spring-context/src/main/java/org/springframework/scheduling/concurrent/ThreadPoolTaskScheduler.java
@@ -403,8 +403,8 @@ public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 			try {
 				return this.delegate.call();
 			}
-			catch (Throwable t) {
-				this.errorHandler.handleError(t);
+			catch (Throwable ex) {
+				this.errorHandler.handleError(ex);
 				return null;
 			}
 		}
diff --git a/spring-test/src/main/java/org/springframework/test/web/servlet/DefaultMvcResult.java b/spring-test/src/main/java/org/springframework/test/web/servlet/DefaultMvcResult.java
index 7239c3d8f2..d11cebc6d9 100644
--- a/spring-test/src/main/java/org/springframework/test/web/servlet/DefaultMvcResult.java
+++ b/spring-test/src/main/java/org/springframework/test/web/servlet/DefaultMvcResult.java
@@ -160,7 +160,7 @@ class DefaultMvcResult implements MvcResult {
 		try {
 			return this.asyncDispatchLatch.await(timeout, TimeUnit.MILLISECONDS);
 		}
-		catch (InterruptedException e) {
+		catch (InterruptedException ex) {
 			return false;
 		}
 	}
diff --git a/spring-web/src/main/java/org/springframework/web/context/request/async/CallableInterceptorChain.java b/spring-web/src/main/java/org/springframework/web/context/request/async/CallableInterceptorChain.java
index 6f225bf60e..1f8cfc362d 100644
--- a/spring-web/src/main/java/org/springframework/web/context/request/async/CallableInterceptorChain.java
+++ b/spring-web/src/main/java/org/springframework/web/context/request/async/CallableInterceptorChain.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -99,8 +99,8 @@ class CallableInterceptorChain {
 					return result;
 				}
 			}
-			catch (Throwable t) {
-				return t;
+			catch (Throwable ex) {
+				return ex;
 			}
 		}
 		return CallableProcessingInterceptor.RESULT_NONE;
@@ -130,8 +130,8 @@ class CallableInterceptorChain {
 					return result;
 				}
 			}
-			catch (Throwable t) {
-				return t;
+			catch (Throwable ex) {
+				return ex;
 			}
 		}
 		return CallableProcessingInterceptor.RESULT_NONE;
diff --git a/spring-webflux/src/main/java/org/springframework/web/reactive/function/server/RouterFunctions.java b/spring-webflux/src/main/java/org/springframework/web/reactive/function/server/RouterFunctions.java
index dbd208cc0a..93589ba88d 100644
--- a/spring-webflux/src/main/java/org/springframework/web/reactive/function/server/RouterFunctions.java
+++ b/spring-webflux/src/main/java/org/springframework/web/reactive/function/server/RouterFunctions.java
@@ -250,8 +250,8 @@ public abstract class RouterFunctions {
 		try {
 			return supplier.get();
 		}
-		catch (Throwable t) {
-			return Mono.error(t);
+		catch (Throwable ex) {
+			return Mono.error(ex);
 		}
 	}
 
diff --git a/spring-webflux/src/main/java/org/springframework/web/reactive/socket/adapter/StandardWebSocketSession.java b/spring-webflux/src/main/java/org/springframework/web/reactive/socket/adapter/StandardWebSocketSession.java
index 7ba0076a21..5f5c4fae31 100644
--- a/spring-webflux/src/main/java/org/springframework/web/reactive/socket/adapter/StandardWebSocketSession.java
+++ b/spring-webflux/src/main/java/org/springframework/web/reactive/socket/adapter/StandardWebSocketSession.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -101,8 +101,8 @@ public class StandardWebSocketSession extends AbstractListenerWebSocketSession<S
 			CloseReason.CloseCode code = CloseCodes.getCloseCode(status.getCode());
 			getDelegate().close(new CloseReason(code, status.getReason()));
 		}
-		catch (IOException e) {
-			return Mono.error(e);
+		catch (IOException ex) {
+			return Mono.error(ex);
 		}
 		return Mono.empty();
 	}