Class GenericQueue


  • public class GenericQueue
    extends java.lang.Object
    This class implements a generic FIFO queue. There is no upper bound on the length of the queue, items are linked.
    • Constructor Summary

      Constructors 
      Constructor Description
      GenericQueue()
      Create an empty queue
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()  
      void flush()
      Clear a queue
      java.lang.Object get()
      Retrieve an object from the head of the queue, or block until one arrives.
      java.lang.Object get​(long timeout)
      Retrieve an object from the head of the queue, blocking until one arrives or until timeout occurs.
      int getCount()  
      void put​(java.lang.Object o)
      Add an object to the tail of the queue.
      java.lang.Object tryGet()  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • GenericQueue

        public GenericQueue()
        Create an empty queue
    • Method Detail

      • flush

        public void flush()
        Clear a queue
      • close

        public void close()
      • put

        public void put​(java.lang.Object o)
        Add an object to the tail of the queue.
        Parameters:
        o - Object to insert in the queue
      • get

        public java.lang.Object get()
        Retrieve an object from the head of the queue, or block until one arrives.
        Returns:
        The object at the head of the queue.
      • get

        public java.lang.Object get​(long timeout)
                             throws java.lang.InterruptedException
        Retrieve an object from the head of the queue, blocking until one arrives or until timeout occurs.
        Parameters:
        timeout - Maximum time to block on queue, in ms. Use 0 to poll the queue.
        Returns:
        The object at the head of the queue, or null if none arrived in time.
        Throws:
        java.lang.InterruptedException - if the operation times out.
      • tryGet

        public java.lang.Object tryGet()
      • getCount

        public int getCount()