The base package These topics cover the built-in classes of the base package The Application classThe base.Application class provides a set of utility functions related to the program environment.The Channel classThe base.Channel class is a built-in class providing basic input/output functions.The SqlHandle classThe base.SqlHandle class is a built-in class providing an API to execute parameterized SQL statements, with or without result sets.The StringBuffer classThe base.StringBuffer class is a built-in class designed to manipulate character strings. The StringTokenizer classThe base.StringTokenizer class is designed to parse a string to extract tokens based on delimiters.The TypeInfo classThe MessageServer classThe base.MessageServer class allows a program to send a key action over the network to other programs using this service.