F:\03java\lianxi\0911>java ServerDemo
192.168.1.104
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String ind
ex out of range: -1
at java.lang.String.checkBounds(String.java:369)
at java.lang.String.<init>(String.java:533)
at ServerDemo.main(ServerDemo.java:19)