Java Socket技術除外

我試圖用Java編寫一個簡單的客戶端服務器程序： - 在同一臺機器上運行服務器和客戶端代碼......但在運行得到一個錯誤： -Java Socket技術除外

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 java.net.Socket.(Unknown Source) 
     at java.net.Socket.(Unknown Source) 
     at Requester.run(Requester.java:13) 
     at Requester.main(Requester.java:68) 
Exception in thread "main" java.lang.NullPointerException 
     at Requester.run(Requester.java:45) 
     at Requester.main(Requester.java:68)

燦任何人幫助！

來源

2010-12-20 Monojeet Nayak

你可以發佈你的代碼段， – Pratik 2010-12-20 07:42:24

是的，來代碼會很好，也請正確格式化堆棧跟蹤，它幾乎不可讀。 – 2010-12-20 08:11:31

@Sergey：考慮完成！ – 2010-12-20 09:59:44