Syntax error What is the purpose of System class in Java?

What is the purpose of System class in Java?

System class belongs to the package java.lang. It cannot be instantiated.

A System class provides −

  • standard output.
  • error output streams.
  • standard input and access to externally defined properties and environment variables.
  • A utility method for quickly copying a portion of an array.
  • a means of loading files and libraries.

Following are the fields for java.lang.System class −

  • static PrintStream err ? This is the "standard" error output stream.
  • static InputStream in ? This is the "standard" input stream.
  • static PrintStream out ? This is the "standard" output stream.
Updated on: 2019-07-30T22:30:20+05:30

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