javamail收发邮件程序，有错，求解释

Question

Exception in thread "main" javax.mail.MessagingException: Connection refused: connect;
nested exception is:
java.net.ConnectException: Connection refused: connect
at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:479)
at javax.mail.Service.connect(Service.java:275)
at javax.mail.Service.connect(Service.java:156)
at cn.edu.seu.cc.MailClient.init(MailClient.java:34)
at cn.edu.seu.cc.MailClient.main(MailClient.java:87)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:232)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:189)
at com.sun.mail.iap.Protocol.<init>(Protocol.java:84)
at com.sun.mail.imap.protocol.IMAPProtocol.<init>(IMAPProtocol.java:87)
at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:446)
... 4 more
编译没有错，运行出来上面的

Answer 1

无法正常连接 可能某些软件阻止了 关闭看看 例如：防火墙 杀毒软件

Answer 2

把杀毒软件和防火墙关了试试看

Answer 3

把360退出

Answer 4

网络连接问题