calculator.java

来自「100多M的J2EE培训内容」· Java 代码 · 共 53 行

package bible.webservices.rpc;

import java.rmi.*;
import javax.ejb.*;

/**
 * Class Calculator
 * A Session Bean that allows the user to perform simple arithmetic operations
 * on the two parameters provided.  The java primitives are passed to the Session
 * Bean via the SOAP Servlet.  The SOAP Servlet decodes the parameters from the
 * SOAP envelope which is sent from the user client.  The process is reversed when
 * the Session Bean sends its reply to the client.
 *
 * @author Geoff Schneider
 */
public class Calculator implements SessionBean {
  private SessionContext sessionContext;
  public void ejbCreate() {
  }
  public void ejbRemove() throws RemoteException {
  }
  public void ejbActivate() throws RemoteException {
  }
  public void ejbPassivate() throws RemoteException {
  }
  public void setSessionContext(SessionContext sessionContext) throws RemoteException {
    this.sessionContext = sessionContext;
  }
  /**
   * Returns the sum of two long primitives.
   */
  public long add(long amount1, long amount2) {
    return amount1 + amount2;
  }
  /**
   * Returns the difference of two long primitives.
   */
  public long subtract(long amount1, long amount2) {
    return amount1 - amount2;
  }
  /**
   * Returns the product of two double primitives.
   */
  public double multiply(double amount, double factor) {
    return amount * factor;
  }
  /**
   * Returns the quotient of two double primitives.
   */
  public double divide(double amount, double divisor) {
    return amount / divisor;
  }
}