Class PrimitiveList

java.lang.Object
uk.ac.starlink.util.PrimitiveList
Direct Known Subclasses:
ByteList, DoubleList, FloatList, IntList, LongList, ShortList

public abstract class PrimitiveList extends Object
Provides an extendable list of primitive values. This provides an abstract superclass for concrete implementations which do roughly the same job for numeric primitive types that StringBuffer does for chars and List does for Objects.
Since:
12 Oct 2006
Author:
Mark Taylor
  • Constructor Summary

    Constructors
    Modifier
    Constructor
    Description
    protected
    PrimitiveList(Object array, int size)
    Constructs a list from an initial array object, whose component type determines the primitive type which this list will work with, and a size, which indicates number of elements of the array which are initially considered to constitute the contents of this list.
  • Method Summary

    Modifier and Type
    Method
    Description
    void
    Removes all of the elements from this list (optional operation).
    protected int
    nextCapacity(int currentCapacity)
    Determines by how much the storage array will grow if it needs to expand.
    int
    Returns the current size of this list.
    Creates and returns a copy of the contents of this list, in the form of a primitive array of the right length to hold all the elements it currently contains.

    Methods inherited from class java.lang.Object

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

    • PrimitiveList

      protected PrimitiveList(Object array, int size)
      Constructs a list from an initial array object, whose component type determines the primitive type which this list will work with, and a size, which indicates number of elements of the array which are initially considered to constitute the contents of this list.
      Parameters:
      array - array object
      size - initial list size (note, not capacity)
  • Method Details

    • size

      public int size()
      Returns the current size of this list.
      Returns:
      number of elements which have been stored
    • clear

      public void clear()
      Removes all of the elements from this list (optional operation). The list will be empty after this call returns.
    • toArray

      public Object toArray()
      Creates and returns a copy of the contents of this list, in the form of a primitive array of the right length to hold all the elements it currently contains.
      Returns:
      array containing contents of this list
    • nextCapacity

      protected int nextCapacity(int currentCapacity)
      Determines by how much the storage array will grow if it needs to expand. Any return value is legal; if a value less than the currentCapacity is returned, Integer.MAX_VALUE will be used. The effect of this is that implementations probably do not need to worry about integer arithmetic overflow. May be overridden by subclasses.
      Parameters:
      currentCapacity - initial size of buffer
      Returns:
      next size up