// ********** ProxyDemo.java **********
interface ProductIF {
  public int getValue();
  public void setValue(int i);
}
class Product implements ProductIF {
  private int i;
  public int getValue() { return i; } 
  public void setValue(int i) { this.i = i; } 
}
class ProductProxy implements ProductIF {
  Product p = new Product();
  public int getValue() { return p.getValue(); } 
  public void setValue(int i) { p.setValue(i); } 
}
class ProxyDemo {
  private static final int MAX = 1000;
  public static void main(String args[]) {
    long t1 = System.currentTimeMillis();
    for (int i=0; i<MAX; i++) {
      ProductIF proxy = new ProductProxy();
      for (int j=0; j<MAX; j++) {
        proxy.setValue(j);
        int k = proxy.getValue();
      } 
    } 
    long t2 = System.currentTimeMillis();
    System.out.print((t2-t1)+ " ");
    System.out.flush();
  }
}