calculator.java

分布式计算——RMI远程方法调用：学习RMI编程

//define the interface
//建立和编译服务接口的Java代码。这个接口定义了所有的提供远程服务的功能
import java.rmi.Remote;
public interface Calculator extends Remote
{
    public long add(long a, long b) 
        throws java.rmi.RemoteException;  
    public long sub(long a, long b) 
        throws java.rmi.RemoteException;  
    public long mul(long a, long b) 
        throws java.rmi.RemoteException;  
    public long div(long a, long b) 
        throws java.rmi.RemoteException; 
}