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Base System

The Java system contains a number of libraries to help developers in creating multi-platform applications without the need to reinvent the wheel.

Some of the main libraries are:

  • java.lang
    It is the collection of the base types that are always included in the compilation unit.
  • java.io
    It is used for streams and random-access files.
  • java.util
    It contains containers and utility classes.
  • java.awt
    This library contains classes for basic user interface components.