Wireless Java

Name

java.util.Vector

Synopsis

This class is a scaled-down version of the J2SE Vector class. The class represents a dynamic array that can grow and shrink as necessary. A vector starts with an array of a preset capacity, set either through the constructor or the ensureCapacity() method, and increases the size if needed. Elements can be added to the vector using the addElement() method. The indexOf() method can be used to obtain the index of a desired element in the array, which can be removed using the elementAt() method. Note that the object returned is simply an Object; be sure to recast it to the appropriate type. You can remove elements using the removeElement() and removeElementAt() methods. size() returns the size of the element array. trimToSize() reduces the size of the vector’s array to match the current number of elements.

public classVector {
   // protected fields
   protected int capacityIncrement;
   protected int elementCount;
   protected Object[] elementData;

   // constructors
   public Vector();
   public Vector(int initialCapacity);
   public Vector(int initialCapacity, int capacityIncrement);

   // public instance methods
   public synchronized void addElement(Object obj);
   public int capacity();
   public boolean contains(Object elem);
   public synchronized void copyInto(Object[] anArray);
   public synchronized Object elementAt(int index);
   public synchronized Enumeration elements();
   public synchronized void ensureCapacity(int minCapacity);
   public synchronized Object firstElement();
   public int indexOf ...