16u.txt

一本关于JBuilder 应用开发的书籍,希望大家喜欢,其实我没看过的,

// PerfClient.java
import java.util.*;
public class PerfClient {
  public static void main(String[] args) throws Exception {
    javax.naming.Context  context = new javax.naming.InitialContext();
    Object ref = context.lookup("accounts/savings");
    AccountHome savingsHome = 
      (AccountHome) javax.rmi.PortableRemoteObject.narrow(ref, AccountHome.class);
    ref = context.lookup("accounts/checking");
    AccountHome checkingHome = 
      (AccountHome) javax.rmi.PortableRemoteObject.narrow(ref, AccountHome.class);
    Account peter = savingsHome.create("Peter", 200f);
    Account paul  = checkingHome.create("Paul",  100f);
    System.out.println("Peter's balance: " + peter.getBalance());
    System.out.println("Paul's  balance: " +  paul.getBalance());
    ref = context.lookup("teller");
    TellerHome tellerHome = 
      (TellerHome) javax.rmi.PortableRemoteObject.narrow(ref, TellerHome.class);
    Teller teller = tellerHome.create();
    System.out.println("Taking from Peter and giving to Paul");
    {
      long begin = System.currentTimeMillis();
      for(int i = 0; i < 100; i++) 
      {
        teller.transfer(peter, paul, 1f);
      }
      long end = System.currentTimeMillis();
      System.out.println("Time per transaction: " + ((end - begin) / 100f) + "mS");
    }
    teller.remove();
    System.out.println("Peter's balance: " + peter.getBalance());
    System.out.println("Paul's  balance: " +  paul.getBalance());
    peter.remove();
    paul.remove();
  }
}