关于远程调用方法中RMI的问题 这问题范围也太大了,最大可能policy文件的配置有问题。问问题问清楚一点吧。 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 是这样的:1.//PiRemote.java:package com.suncold.ehuang.pi;import java.rmi.*;interface PiRemote extends Remote { double getPi() throws RemoteException;}2.//Pi.javapackage com.suncold.ehuang.pi;import java.net.*;import java.rmi.*;import java.rmi.registry.*;import java.rmi.server.*;public class Pi extends UnicastRemoteObject implements PiRemote { public double getPi() throws RemoteException { return Math.PI; } public Pi() throws RemoteException {} public static void main(String[] arguments) { System.setSecurityManager(new RMISecurityManager()); try { Pi p=new Pi(); Naming.bind("//Default:1010/Pi",p); } catch(Exception e) { System.out.println("Error -- "+e.toString());// e.printStrackTrace(); } }}3.//OutputPi.javapackage com.suncold.ehuang.pi;import java.rmi.*;import java.rmi.registry.*;public class OutputPi { public static void main(String[] arguments) { System.setSecurityManager(new RMISecurityManager()); try { PiRemote pr=(PiRemote)Naming.lookup("//Default:1010/Pi"); for(int i=0;i<10;i++) { System.out.println("Pi="+pr.getPi()); } } catch(Exception e) { System.out.println("Error -- "+e.toString());// e.printStrackTrace(); } }}-------------------------------------------------------------我现在编译成功了,放在一个文件夹"pi"中,运行OutputPi时出错:Exception in thread "main" java.lang.NoClassDefFoundError: OutputPi (wrong name: com/suncold/ehuang/pi/OutputPi) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:486) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111) at java.net.URLClassLoader.defineClass(URLClassLoader.java:248) at java.net.URLClassLoader.access$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:297) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286) at java.lang.ClassLoader.loadClass(ClassLoader.java:253) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)-------------------------------------------------------------请问是怎么回事? swing小问题 Java程序调用外部exe可执行程序时出现的问题 关于 FileInputStream 的问题 Safari和Firefox浏览器,如何实现java版本低时自动下载新版? 重大发现,怎么老是空指针呢?呵呵 问题已经基本得到结果,特此放分 (服务器的优化问题(解决最少500分) ) 3 用NetBeans IDE 来编写计算器的源码 timer 谁来谈谈JTableHeader 获取HttpURLConnection实例 java中方法里的变量系统何时回收内存空间? 橡皮筋技术
1.//PiRemote.java:
package com.suncold.ehuang.pi;
import java.rmi.*;
interface PiRemote extends Remote {
double getPi() throws RemoteException;
}
2.//Pi.java
package com.suncold.ehuang.pi;
import java.net.*;
import java.rmi.*;
import java.rmi.registry.*;
import java.rmi.server.*;
public class Pi extends UnicastRemoteObject implements PiRemote {
public double getPi() throws RemoteException {
return Math.PI;
}
public Pi() throws RemoteException {}
public static void main(String[] arguments) {
System.setSecurityManager(new RMISecurityManager());
try {
Pi p=new Pi();
Naming.bind("//Default:1010/Pi",p);
} catch(Exception e) {
System.out.println("Error -- "+e.toString());
// e.printStrackTrace();
}
}
}
3.//OutputPi.java
package com.suncold.ehuang.pi;
import java.rmi.*;
import java.rmi.registry.*;
public class OutputPi {
public static void main(String[] arguments) {
System.setSecurityManager(new RMISecurityManager());
try {
PiRemote pr=(PiRemote)Naming.lookup("//Default:1010/Pi");
for(int i=0;i<10;i++) {
System.out.println("Pi="+pr.getPi());
}
} catch(Exception e) {
System.out.println("Error -- "+e.toString());
// e.printStrackTrace();
}
}
}
-------------------------------------------------------------
我现在编译成功了,放在一个文件夹"pi"中,运行OutputPi时出错:
Exception in thread "main" java.lang.NoClassDefFoundError: OutputPi (wrong name:
com/suncold/ehuang/pi/OutputPi)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:486)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:11
1)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:248)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
-------------------------------------------------------------
请问是怎么回事?