gradingservice.java

21天学通java的示例程序源代码

	package com.wrox.rmi.simple;
	
	import java.rmi.Naming;
	import java.rmi.RemoteException;
	import java.rmi.server.UnicastRemoteObject;
	
	public class GradingService extends UnicastRemoteObject implements SchoolGrades {
	
       static int subjectGrades[];
       static {
           subjectGrades = new int[3];
           subjectGrades[0] = 10;
           subjectGrades[1] = 1;
           subjectGrades[2] = 3;
       } 

	public GradingService() throws RemoteException {
		super();
	}
	
     public int getAverageGrade() {
          System.out.println("GradingService: computing average grade");

          int numOfSubjects = subjectGrades.length;
          int sumOfAllSubjects = 0;
          for (int i=0; i < numOfSubjects; i++)
            sumOfAllSubjects += subjectGrades[i];
          return (sumOfAllSubjects / numOfSubjects);
          }
	    
          public static void main(String args[]) {
		try {
		    GradingService gService = new GradingService();

		    Naming.rebind("/GradingService", gService);
	
		    System.out.println("GradingService bound in registry");
		} catch (Exception e) {
		    System.out.println("GradingService err: " + e.getMessage());
		    e.printStackTrace();
		}
	    }
	}