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发信人: RichardQiu (Richard Qiu), 信区: Java
标  题: 用JB5实现j2ee tutorial中的converter范例(6)
发信站: 荔园晨风BBS站 (Wed Oct 10 17:54:29 2001), 转信

六、indexBean.java

package converterapp;

import javax.naming.*;
import javax.rmi.PortableRemoteObject;

/**
* Title:        A EJB SAMPLE
* Description:
* Copyright:    Copyright (c) 2001
* Company:      VISTA.COM
* @author George Hill
* @version 1.0
*/

public class indexBean {
  private String amount = null;
  private ConverterHome converterHome = null;
  private Converter converter = null;

  public indexBean() {
    try {
      Context ctx = new InitialContext();
      Object ref = ctx.lookup("Converter");
      converterHome = (ConverterHome) PortableRemoteObject.narrow(ref,
        ConverterHome.class);
      converter = converterHome.create();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  public String getAmount() {
    return amount;
  }

  public void setAmount(String newValue) {
    if (newValue != null) {
      amount = newValue;
    }
  }

  public String dollarToYen() {
    String rtnString = null;
    Double d;

    try {
      if (amount != null && amount.length() > 0) {
        d = new Double(amount);
        rtnString = String.valueOf(converter.dollarToYen(d.doubleValue()));
      }
    }
    catch (Exception e) {
      e.printStackTrace();
    }

    return rtnString;
  }

  public String yenToEuro() {
    String rtnString = null;
    Double d;

    try {
      if (amount != null && amount.length() > 0) {
        d = new Double(amount);
        rtnString = String.valueOf(converter.yenToEuro(d.doubleValue()));
      }
    }
    catch (Exception e) {
      e.printStackTrace();
    }

    return rtnString;
  }
}

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