Class CheckedEntry

lib/java/util/Collections.java:3243–3303

Class represents a dynamically typesafe view of the specified map entry.

         * entry.
         */
        private static class CheckedEntry<K, V> implements Map.Entry<K, V> {

            Map.Entry<K, V> e;

            Class<V> valueType;

            /**
             * Constructs a dynamically typesafe view of the specified map
             * entry.
             * 
             * @param e
             *            the map entry for which a dynamically typesafe view is
             *            to be constructed.
             * @param valueType
             *            the type of the value
             */
            public CheckedEntry(Map.Entry<K, V> e, Class<V> valueType) {
                if (e == null) {
                    throw new NullPointerException();
                }
                this.e = e;
                this.valueType = valueType;
            }

            /**
             * @see java.util.Map.Entry#getKey()
             */
            public K getKey() {
                return e.getKey();
            }

            /**
             * @see java.util.Map.Entry#getValue()
             */
            public V getValue() {
                return e.getValue();
            }

            /**
             * @see java.util.Map.Entry#setValue(Object)
             */
            public V setValue(V obj) {
                return e.setValue(checkType(obj, valueType));
            }

            /**
             * @see java.util.Map.Entry#equals(Object)
             */
            @Override
            public boolean equals(Object obj) {
                return e.equals(obj);
            }

            /**
             * @see java.util.Map.Entry#hashCode()
             */
            @Override
            public int hashCode() {