src/java.base/share/classes/java/lang/Class.java

*** 188,198 ****
       * @return a string representation of this class object.
       */
      public String toString() {
          return (isValue() ? "value " : "")
                 + (isInterface() ? "interface " : (isPrimitive() ? "" : "class "))
!                + getName();
      }
  
      /**
       * Returns a string describing this {@code Class}, including
       * information about modifiers and type parameters.
--- 188,198 ----
       * @return a string representation of this class object.
       */
      public String toString() {
          return (isValue() ? "value " : "")
                 + (isInterface() ? "interface " : (isPrimitive() ? "" : "class "))
!                + getName() + (isValue() && isBoxType() ? "/box" : "");
      }
  
      /**
       * Returns a string describing this {@code Class}, including
       * information about modifiers and type parameters.
*** 521,531 ****
       * for conversion.
       *
       * @return the box type of this class if this class is a value class;
       *         otherwise, this class.
       */
!     public Class<?> asBoxType() {
          return isValue() ? boxType : this;
      }
  
      /**
       * Returns a {@code Class} object representing the <em>null-free value type</em>
--- 521,531 ----
       * for conversion.
       *
       * @return the box type of this class if this class is a value class;
       *         otherwise, this class.
       */
!     public Class<T> asBoxType() {
          return isValue() ? boxType : this;
      }
  
      /**
       * Returns a {@code Class} object representing the <em>null-free value type</em>
*** 538,548 ****
       * for conversion.
       *
       * @return the unbox value type of this class if this class is a value class;
       *         otherwise, {@code null}.
       */
!     public Class<?> asValueType() {
          return isValue() ? valueType : null;
      }
  
      /*
       * Returns true if this class is a non-value class or a box value class.
--- 538,548 ----
       * for conversion.
       *
       * @return the unbox value type of this class if this class is a value class;
       *         otherwise, {@code null}.
       */
!     public Class<T> asValueType() {
          return isValue() ? valueType : null;
      }
  
      /*
       * Returns true if this class is a non-value class or a box value class.
*** 550,561 ****
      boolean isBoxType() {
          return boxType == null || this == boxType;
      }
  
      // set by VM if this class is a value type
!     private transient Class<?> boxType;
!     private transient Class<?> valueType;
  
      /**
       * Creates a new instance of the class represented by this {@code Class}
       * object.  The class is instantiated as if by a {@code new}
       * expression with an empty argument list.  The class is initialized if it
--- 550,561 ----
      boolean isBoxType() {
          return boxType == null || this == boxType;
      }
  
      // set by VM if this class is a value type
!     private transient Class<T> boxType;
!     private transient Class<T> valueType;
  
      /**
       * Creates a new instance of the class represented by this {@code Class}
       * object.  The class is instantiated as if by a {@code new}
       * expression with an empty argument list.  The class is initialized if it