java模拟服务器，运行老是出错

Question

java.net.BindException: Address already in use: JVM_Bind
at java.net.DualStackPlainSocketImpl.bind0(Native Method)
at java.net.DualStackPlainSocketImpl.socketBind(Unknown Source)
at java.net.AbstractPlainSocketImpl.bind(Unknown Source)
at java.net.PlainSocketImpl.bind(Unknown Source)
at java.net.ServerSocket.bind(Unknown Source)
at java.net.ServerSocket.(Unknown Source)
at java.net.ServerSocket.(Unknown Source)
at com.liukai.server.Server.openServer(Server.java:147)
at com.liukai.server.StartServer$1.run(StartServer.java:11)
java.net.BindException: Address already in use: Cannot bind
at java.net.DualStackPlainDatagramSocketImpl.socketBind(Native Method)
at java.net.DualStackPlainDatagramSocketImpl.bind0(Unknown Source)
at java.net.AbstractPlainDatagramSocketImpl.bind(Unknown Source)
at java.net.DatagramSocket.bind(Unknown Source)
at java.net.DatagramSocket.(Unknown Source)
at java.net.DatagramSocket.(Unknown Source)
at java.net.DatagramSocket.(Unknown Source)
at com.liukai.server.UDPServer.openServer(UDPServer.java:30)
at com.liukai.server.StartServer$2.run(StartServer.java:25)

Answer 1

貌似端口问题，端口被占用