src/jdk.compiler/share/classes/com/sun/tools/javac/model/AnnotationProxyMaker.java

*** 30,39 ****
--- 30,40 ----
  import java.lang.annotation.*;
  import java.lang.reflect.Array;
  import java.lang.reflect.Method;
  import java.util.LinkedHashMap;
  import java.util.Map;
+ import java.util.stream.Collectors;
  import sun.reflect.annotation.*;
  
  import javax.lang.model.type.MirroredTypeException;
  import javax.lang.model.type.MirroredTypesException;
  import javax.lang.model.type.TypeMirror;
*** 290,300 ****
              type = t;
              typeString = t.toString();
          }
  
          public String toString() {
!             return typeString;
          }
  
          public int hashCode() {
              return (type != null ? type : typeString).hashCode();
          }
--- 291,301 ----
              type = t;
              typeString = t.toString();
          }
  
          public String toString() {
!             return typeString + ".class";
          }
  
          public int hashCode() {
              return (type != null ? type : typeString).hashCode();
          }
*** 333,343 ****
              types = ts;
              typeStrings = ts.toString();
          }
  
          public String toString() {
!             return typeStrings;
          }
  
          public int hashCode() {
              return (types != null ? types : typeStrings).hashCode();
          }
--- 334,346 ----
              types = ts;
              typeStrings = ts.toString();
          }
  
          public String toString() {
!             return types.stream()
!                 .map(t -> t.toString() + ".class")
!                 .collect(Collectors.joining(", ", "{", "}"));
          }
  
          public int hashCode() {
              return (types != null ? types : typeStrings).hashCode();
          }