No need to end exception messages with an exclamation!

Author: garydgregory

src/main/java/org/apache/commons/beanutils/SuppressPropertiesBeanIntrospector.java

@@ -69,7 +69,7 @@ public class SuppressPropertiesBeanIntrospector implements BeanIntrospector {
      */
     public SuppressPropertiesBeanIntrospector(final Collection<String> propertiesToSuppress) {
         if (propertiesToSuppress == null) {
-            throw new IllegalArgumentException("Property names must not be null!");
+            throw new IllegalArgumentException("Property names must not be null.");
         }
 
         propertyNames = Collections.unmodifiableSet(new HashSet<>(

src/test/java/org/apache/commons/beanutils/SuppressPropertiesBeanIntrospectorTest.java

@@ -42,17 +42,17 @@ private static class IntrospectionContextTestImpl implements IntrospectionContex
 
         @Override
         public void addPropertyDescriptor(final PropertyDescriptor desc) {
-            throw new UnsupportedOperationException("Unexpected method call!");
+            throw new UnsupportedOperationException("Unexpected method call.");
         }
 
         @Override
         public void addPropertyDescriptors(final PropertyDescriptor[] descriptors) {
-            throw new UnsupportedOperationException("Unexpected method call!");
+            throw new UnsupportedOperationException("Unexpected method call.");
         }
 
         @Override
         public PropertyDescriptor getPropertyDescriptor(final String name) {
-            throw new UnsupportedOperationException("Unexpected method call!");
+            throw new UnsupportedOperationException("Unexpected method call.");
         }
 
         /**
@@ -66,17 +66,17 @@ public Set<String> getRemovedProperties() {
 
         @Override
         public Class<?> getTargetClass() {
-            throw new UnsupportedOperationException("Unexpected method call!");
+            throw new UnsupportedOperationException("Unexpected method call.");
         }
 
         @Override
         public boolean hasProperty(final String name) {
-            throw new UnsupportedOperationException("Unexpected method call!");
+            throw new UnsupportedOperationException("Unexpected method call.");
         }
 
         @Override
         public Set<String> propertyNames() {
-            throw new UnsupportedOperationException("Unexpected method call!");
+            throw new UnsupportedOperationException("Unexpected method call.");
         }
 
         @Override