// ********** TemplateDemo.java **********
abstract class AbstractClass {
  public void templateMethod() {
    primitiveOperation1();
    primitiveOperation2();
  }
  protected abstract void primitiveOperation1();
  protected abstract void primitiveOperation2();
}
class ConcreteClass1 extends AbstractClass {
  protected void primitiveOperation1() {}
  protected void primitiveOperation2() {}
} 
class ConcreteClass2 extends AbstractClass {
  protected void primitiveOperation1() {}
  protected void primitiveOperation2() {}
} 
class TemplateDemo {
  private static final int MAX = 2000;
  public static void main(String args[]) {
    long t1 = System.currentTimeMillis();
    for (int i=0; i<MAX; i++) {
      AbstractClass concrete1 = new ConcreteClass1();
      AbstractClass concrete2 = new ConcreteClass2();
      for (int j=0; j<MAX; j++) {
        concrete1.templateMethod();
        concrete2.templateMethod();
      }
    }
    long t2 = System.currentTimeMillis();
    System.out.print((t2-t1)+" ");
    System.out.flush();
  }
}