userdefinedexception.java

来自「精通Java核心技术源代码」· Java 代码 · 共 15 行

public class UserDefinedException extends Exception 
{
     private int port;

     public UserDefinedException( int port) 
     {
          this.port = port;
     }

     public String toString() 
     {
          return "No permission to connect port "+port+".";
     }
}