السلام عليكــم ورحمـة الله وبركاتــه ،،
قمت بتشغيل هذا البرنامج الذي يقوم بإستقبال رسائل إلكترونية
ولكن يظهر لي هذا الخطأ
كود البرنامج
اقتباسimport javax.mail.*;import javax.mail.internet.*;
import java.util.*;
import java.io.*;
public class POP3Client {
public static void main(String[] args) {
Properties props = new Properties( );
String host = "pop.gmail.com ";
String username = "mohammed@gmail.com";
String password = "*******************";
String provider = "pop3";
try {
// Connect to the POP3 server
Session session = Session.getDefaultInstance(props, null);
Store store = session.getStore(provider);
store.connect(host, username, password);
// Open the folder
Folder inbox = store.getFolder("INBOX");
if (inbox == null) {
System.out.println("No INBOX");
System.exit(1);
}
inbox.open(Folder.READ_ONLY);
// Get the messages from the server
Message[] messages = inbox.getMessages( );
for (int i = 0; i < messages.length; i++) {
System.out.println("------------ Message " + (i+1)
+ " ------------");
messages.writeTo(System.out);
}
// Close the connection
// but don't remove the messages from the server
inbox.close(false);
store.close( );
}
catch (Exception ex) {
ex.printStackTrace( );
}
}
}
وهذا الخطأ
اقتباسjavax.mail.MessagingException: Connect failed;nested exception is:
java.net.UnknownHostException: pop.gmail.com
at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:160)
at javax.mail.Service.connect(Service.java:291)
at javax.mail.Service.connect(Service.java:172)
at POP3Client.main(POP3Client.java:52)
Caused by: java.net.UnknownHostException: pop.gmail.com
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:519)
at java.net.Socket.connect(Socket.java:469)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:267)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:227)
at com.sun.mail.pop3.Protocol.<init>(Protocol.java:91)
at com.sun.mail.pop3.POP3Store.getPort(POP3Store.java:213)
at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:156)
... 3 more
Process completed.
أرجو مساعدة
