convertclient.java

精通Java核心技术的随书源代码

// ==================== Program Discription ==========================
// 程序名称：示例18-4 : ConvertClient.java
// 程序目的：EJB客户端
// ==============================================================
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;

public class ConvertClient
{
  public static void main(String[] argv)
    {
      try {
        Context initial = new InitialContext();
        Object objref = initial.lookup("MyConverter");
        ConverterHome home = (ConverterHome)PortableRemoteObject.narrow
                            (objref, ConverterHome.class);
        Converter Converter = home.create( );
        double gravity = Converter.MassToGravity(98);
        System.out.println(String.valueOf(gravity));
        double mass = Converter.GravityToMass(10);
        System.out.println(String.valueOf(mass));
        Converter.remove();
        }
        catch (Exception e) {
           e.printStackTrace();
        }
    }
}