clean up java docs

Author: ldetmer

gax-java/gax/src/main/java/com/google/api/gax/util/ClassWrapper.java

@@ -29,15 +29,15 @@
  */
 package com.google.api.gax.util;
 
-/* Wrapper class for reflection Class methods to enable unit testing. */
+/* Wrapper class for reflection {@link java.lang.Class} methods to enable unit testing. */
 public class ClassWrapper {
 
   /* Wraps {@link java.lang.Class#forName} method  */
   public Class<?> forName(String name) throws ClassNotFoundException {
     return Class.forName(name);
   }
 
-  /* Consolidates retrieving a field on a Class object via reflection and retrieving the value of that field */
+  /* Consolidates retrieving a {@link java.lang.Field} on a {@link java.lang.Class} object via reflection and retrieving the value of that Field */
   public Object getFieldValue(Class<?> clazz, String fieldName)
       throws NoSuchFieldException, IllegalAccessException {
     return clazz.getField(fieldName).get(null);

gax-java/gax/src/test/java/com/google/api/gax/core/GaxPropertiesTest.java

@@ -30,14 +30,16 @@
 package com.google.api.gax.core;
 
 import static com.google.api.gax.core.GaxProperties.getBundleVersion;
-import static org.junit.jupiter.api.Assertions.*;
-import static org.mockito.ArgumentMatchers.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
-import com.google.api.gax.util.*;
+import com.google.api.gax.util.ClassWrapper;
 import com.google.common.base.Strings;
-import com.google.protobuf.*;
+import com.google.protobuf.Any;
 import java.io.IOException;
 import java.util.Optional;
 import java.util.regex.Pattern;