java中进行远程方法调用，能支持分布式计算。并且可以实现在server的修改，能反应到各个client。

假如server的ip是：192.168.11.2，

server端的代码如下：

/*** */
package com.vs.rmi;import java.rmi.Remote;
import java.rmi.RemoteException;public interface Product extends Remote {public String getDescription() throws RemoteException;
}

package com.vs.rmi;import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;public class ProductImpl extends UnicastRemoteObject implements Product {private String name;public ProductImpl() throws RemoteException{super();name = "my rmi";}@Overridepublic String getDescription() throws RemoteException {return "hello world, " + name;}
}

/*** */
package com.vs.rmi;import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;/*** @author hadoop* */
public class ProductServer {/*** @param args*/public static void main(String[] args) {/** 创建和安装一个安全管理器，令其支持 RMI. 作为 Java 开发包的一部分* * 适用于 RMI 唯一一个是 RMISecurityManager.* * * * if(System.getSecurityManager() == null) {* * System.setSecurityManager(new RMISecurityManager());* * }*/try {LocateRegistry.createRegistry(8808);ProductImpl server = new ProductImpl();Naming.rebind("//192.168.11.2:8808/SAMPLE-SERVER", server);System.out.println("远程对象注册成功， RMI 服务已经启动，等待客户端调用 ....");} catch (java.net.MalformedURLException me) {System.out.println("Malformed URL:" + me.toString());} catch (RemoteException re) {System.out.println("Remote exception:" + re.toString());}}}

Project接口必须打成jar包，在client的包中进行引入。

client端的代码如下：

package com.vs.myrmi;import java.rmi.*;import com.vs.rmi.Product;public class RmiSampleClient {public static void main(String[] args){try {String url = "//192.168.11.2:8808/SAMPLE-SERVER";Product product = (Product)Naming.lookup(url);System.out.println(product.getDescription());} catch (RemoteException exc) {System.out.println("Error in lookup: " + exc.toString());} catch (java.net.MalformedURLException exc) {System.out.println("Malformed URL: " + exc.toString());} catch (java.rmi.NotBoundException exc) {System.out.println("NotBound: " + exc.toString());}}
}

先执行server端进行监听，然后执行client端，client执行的结果如下：

hello world, my rmi

java1.6中，已经不需要手动使用rmic命令生成骨架。