Method contains

lib/java/util/Hashtable.java:344–359

Returns true if this Hashtable contains the specified object as the value of at least one of the key/value pairs. @param value the object to look for as a value in this Hashtable. @return true if object is a value in this Hashtable, false o

(Object value)

     * @see java.lang.Object#equals
     */
    public synchronized boolean contains(Object value) {
        if (value == null) {
            throw new NullPointerException();
        }

        for (int i = elementData.length; --i >= 0;) {
            Entry<K, V> entry = elementData[i];
            while (entry != null) {
                if (entry.value.equals(value)) {
                    return true;
                }
                entry = entry.next;
            }
        }
        return false;
    }

    /**
     * Returns true if this {@code Hashtable} contains the specified object as a