objectcounter.java

Java程序设计技巧与开发实例附书源代码。

public class ObjectCounter
{
  public static String showMenu()
  {
    System.out.println("\n\t<C>treate object");
    System.out.println("\t<R>un garbage collector");
    System.out.println("\n\tE[x]it the program");
    System.out.print("\tEnter choice: ");
    return Console.readString();
  }

  public static void main(String args[])
  {
    CountingObject obj = null;
    String choice = showMenu();
    while (!choice.equalsIgnoreCase("x"))
    {
      if (choice.equalsIgnoreCase("c"))
      {
        obj = new CountingObject();
      }
      else if (choice.equalsIgnoreCase("r"))
      {
        System.gc();
      }
      choice = showMenu();
    }
  }
}