The CLDC API contains many of the commonly used output classes from J2SE. In particular, the CLDC java.io package includes the following output classes:

• ByteArrayOutputStream -- Implements an output stream where data is written into a bytes array.
  
  
• DataOutput -- An interface that provides for writing primitive Java data types to a binary output stream. DataOutputStream provides an implementation of this interface.
  
  
• DataOutputStream -- An output stream that allows an application to write primitive Java data types in a portable way.
  
  
• OutputStream -- An abstract class that is the superclass of all classes representing an output stream of bytes.
  
  
• OutputStreamReader -- Given characters, translates them into bytes according to a specified character encoding.
  
  
• PrintStream -- Adds a convenient way to print a textual representation of data values.
  
  
• Writer -- An abstract class for writing character streams.

Some of these classes may not contain all the methods supported by J2SE, such as the floating point and double precision methods.