diff --git a/flink-connectors/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroOutputFormat.java b/flink-connectors/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroOutputFormat.java
index 1db45a5619015..ae9036256360f 100644
--- a/flink-connectors/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroOutputFormat.java
+++ b/flink-connectors/flink-avro/src/main/java/org/apache/flink/api/java/io/AvroOutputFormat.java
@@ -125,9 +125,7 @@ public void open(int taskNumber, int numTasks) throws IOException {
 			datumWriter = new SpecificDatumWriter<E>(avroValueType);
 			try {
 				schema = ((org.apache.avro.specific.SpecificRecordBase)avroValueType.newInstance()).getSchema();
-			} catch (InstantiationException e) {
-				throw new RuntimeException(e.getMessage());
-			} catch (IllegalAccessException e) {
+			} catch (InstantiationException | IllegalAccessException e) {
 				throw new RuntimeException(e.getMessage());
 			}
 		} else {
diff --git a/flink-core/src/main/java/org/apache/flink/api/java/typeutils/runtime/PojoComparator.java b/flink-core/src/main/java/org/apache/flink/api/java/typeutils/runtime/PojoComparator.java
index 945abc81bd1ba..a3f4280c9b9a0 100644
--- a/flink-core/src/main/java/org/apache/flink/api/java/typeutils/runtime/PojoComparator.java
+++ b/flink-core/src/main/java/org/apache/flink/api/java/typeutils/runtime/PojoComparator.java
@@ -131,9 +131,7 @@ private PojoComparator(PojoComparator<T> toClone) {
 		try {
 			this.serializer = (TypeSerializer<T>) InstantiationUtil.deserializeObject(
 					InstantiationUtil.serializeObject(toClone.serializer), Thread.currentThread().getContextClassLoader());
-		} catch (IOException e) {
-			throw new RuntimeException("Cannot copy serializer", e);
-		} catch (ClassNotFoundException e) {
+		} catch (IOException | ClassNotFoundException e) {
 			throw new RuntimeException("Cannot copy serializer", e);
 		}
 	}
diff --git a/flink-runtime/src/main/java/org/apache/flink/runtime/iterative/concurrent/BlockingBackChannel.java b/flink-runtime/src/main/java/org/apache/flink/runtime/iterative/concurrent/BlockingBackChannel.java
index 8631c992a1143..067bbfe0707de 100644
--- a/flink-runtime/src/main/java/org/apache/flink/runtime/iterative/concurrent/BlockingBackChannel.java
+++ b/flink-runtime/src/main/java/org/apache/flink/runtime/iterative/concurrent/BlockingBackChannel.java
@@ -51,9 +51,7 @@ public BlockingBackChannel(SerializedUpdateBuffer buffer) {
 	public DataInputView getReadEndAfterSuperstepEnded() {
 		try {
 			return queue.take().switchBuffers();
-		} catch (InterruptedException e) {
-			throw new RuntimeException(e);
-		} catch (IOException e) {
+		} catch (InterruptedException | IOException e) {
 			throw new RuntimeException(e);
 		}
 	}
diff --git a/flink-runtime/src/main/java/org/apache/flink/runtime/operators/hash/CompactingHashTable.java b/flink-runtime/src/main/java/org/apache/flink/runtime/operators/hash/CompactingHashTable.java
index eacb02c7b2f3d..67ca342b0a255 100644
--- a/flink-runtime/src/main/java/org/apache/flink/runtime/operators/hash/CompactingHashTable.java
+++ b/flink-runtime/src/main/java/org/apache/flink/runtime/operators/hash/CompactingHashTable.java
@@ -451,12 +451,8 @@ private long insertRecordIntoPartition(T record, InMemoryPartition<T> partition,
 						this.compactionMemory.allocateSegments((int)(newPointer >> this.pageSizeInBits));
 					}
 					return newPointer;
-				}
-				catch (EOFException ex) {
-					throw new RuntimeException("Memory ran out. Compaction failed. " +
-							getMemoryConsumptionString() + " Message: " + ex.getMessage());
-				}
-				catch (IndexOutOfBoundsException ex) {
+				} 
+				catch (EOFException | IndexOutOfBoundsException ex) {
 					throw new RuntimeException("Memory ran out. Compaction failed. " +
 							getMemoryConsumptionString() + " Message: " + ex.getMessage());
 				}
diff --git a/flink-runtime/src/main/java/org/apache/flink/runtime/operators/util/TaskConfig.java b/flink-runtime/src/main/java/org/apache/flink/runtime/operators/util/TaskConfig.java
index 71c040512ef02..a5decf49c0194 100644
--- a/flink-runtime/src/main/java/org/apache/flink/runtime/operators/util/TaskConfig.java
+++ b/flink-runtime/src/main/java/org/apache/flink/runtime/operators/util/TaskConfig.java
@@ -286,9 +286,7 @@ public void setStubWrapper(UserCodeWrapper<?> wrapper) {
 	public <T> UserCodeWrapper<T> getStubWrapper(ClassLoader cl) {
 		try {
 			return (UserCodeWrapper<T>) InstantiationUtil.readObjectFromConfig(this.config, STUB_OBJECT, cl);
-		} catch (ClassNotFoundException e) {
-			throw new CorruptConfigurationException("Could not read the user code wrapper: " + e.getMessage(), e);
-		} catch (IOException e) {
+		} catch (ClassNotFoundException | IOException e) {
 			throw new CorruptConfigurationException("Could not read the user code wrapper: " + e.getMessage(), e);
 		}
 	}