Исходный текст программы VectorDemo.java

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// =======================================
// VectorDemo.java
//
// (C) Alexandr Frolov, 1998
// E-mail: frolov@glasnet.ru
// Web:    http://www.glasnet.ru/~frolov
// =======================================

import java.util.*;

public class VectorDemo
{
  
  public static void main(String args[])
  {
    Vector vPoints = new Vector();
    String szStr;
    byte bKbd[] = new byte[256];
    StringTokenizer st;
    int i, j = 0;
    
    System.out.println(
      "Enter initial number of elements:"); 
    
    try
    {
      int iCnt = System.in.read(bKbd);
      szStr = new String(bKbd, 0, iCnt);
      
      st = new StringTokenizer(szStr, "\r\n");
      szStr = 
         new String((String)st.nextElement());
      
      Integer intVal = new Integer(szStr);
      j = intVal.intValue();
    }  
    catch(Exception ex)
    {
      System.out.println(ex.toString()); 
    }

    
    for(i = 0; i < j; i++)
    {
      vPoints.addElement(
        new MyPoint(i, i + 10));
    }
    
    try
    {
      vPoints.insertElementAt(
        new MyPoint(2000, 2000), 2);

      vPoints.setElementAt(
        new MyPoint(3000, 3000), 3);
    }  
    catch(Exception ex)
    {
      System.out.println(ex.toString()); 
    }
    
    for(i = 0; i < vPoints.size(); i++)
    {
      MyPoint mpt;
      mpt = (MyPoint)vPoints.elementAt(i);
      mpt.printPoint();
    }
    
  }
}

class MyPoint
{
  private int m_x=0;
  private int m_y=0;
  
  MyPoint(int ix, int iy)
  {
    m_x = ix;
    m_y = iy;
  }
  
  public void setPoint(int ix, int iy)
  {
    m_x = ix;
    m_y = iy;
  }
  
  public void printPoint()
  {
    System.out.println("Point: (" 
      + m_x + "," + m_y + ")"); 
  }
}

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