{( , )removemin( {the java util priorityqueue class there is no priority queue interface built into javabut java does include classjava util priorityqueuewhich implements the java util queue interface instead of adding and removing elements according to the fifo policyhoweverwhich is the standard queue policythe java util priorityqueue class processes its entries according to priority this priority is defined by given comparator objectwhich is passed to the queue in constructoror it is defined by the natural ordering of the elements being stored in the queue even though the java util priorityqueue is based on the java util queue interfacewe can define simple correspondence between the methods of this class and our priority queue adtas shown in table assuming we have classpqentrywhich implements the entry interface table methods of our priority queue adt and corresponding methods of class java util priorityqueue we assume that the comparator for pqentry objects is essentially the same as the comparator for the keys of the priority queue note that java util priorityqueue has pair of methods for its main operation the two methods have similar functionalitywith minor differences in the way they deal with boundary conditions ( trying to remove from an empty priority queuepriority queue adt classjava util priorityqueue