IT. Expert System.

All Implemented Interfaces:

Flushable

public final class Console
extends Object
implements Flushable

Since:

1.6

• Method Summary

  Methods

  Modifier and Type	Method and Description
  void	flush() Flushes the object by writing out any buffered data to the underlying output.
  Console	format(String format, Object... args) Writes a formatted string to the console using the specified format string and arguments.
  static Console	getConsole() Secret accessor for System.console.
  Console	printf(String format, Object... args) Equivalent to format(format, args).
  Reader	reader() Returns the Reader associated with this console.
  String	readLine() Reads a line from the console.
  String	readLine(String format, Object... args) Reads a line from this console, using the specified prompt.
  char[]	readPassword() Reads a password from the console.
  char[]	readPassword(String format, Object... args) Reads a password from the console.
  PrintWriter	writer() Returns the Writer associated with this console.

  • Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• Method Detail

  • getConsole

    public static Console getConsole()

    Secret accessor for System.console.

  • flush

    public void flush()

    Description copied from interface: Flushable
    Flushes the object by writing out any buffered data to the underlying output.

    Specified by:

    flush in interface Flushable

  • format

    public Console format(String format,
                 Object... args)

    Writes a formatted string to the console using the specified format string and arguments.

    Parameters:

    format - the format string (see Formatter.format(java.lang.String, java.lang.Object...))

    args - the list of arguments passed to the formatter. If there are more arguments than required by format, additional arguments are ignored.

    Returns:

    the console instance.

  • printf

    public Console printf(String format,
                 Object... args)

    Equivalent to format(format, args).

  • reader

    public Reader reader()

    Returns the Reader associated with this console.

  • readLine

    public String readLine()

    Reads a line from the console.

    Returns:

    the line, or null at EOF.

  • readLine

    public String readLine(String format,
                  Object... args)

    Reads a line from this console, using the specified prompt. The prompt is given as a format string and optional arguments. Note that this can be a source of errors: if it is possible that your prompt contains % characters, you must use the format string "%s" and pass the actual prompt as a parameter.

    Parameters:

    format - the format string (see Formatter.format(java.lang.String, java.lang.Object...))

    args - the list of arguments passed to the formatter. If there are more arguments than required by format, additional arguments are ignored.

    Returns:

    the line, or null at EOF.

  • readPassword

    public char[] readPassword()

    Reads a password from the console. The password will not be echoed to the display.

    Returns:

    a character array containing the password, or null at EOF.

  • readPassword

    public char[] readPassword(String format,
                      Object... args)

    Reads a password from the console. The password will not be echoed to the display. A formatted prompt is also displayed.

    Parameters:

    format - the format string (see Formatter.format(java.lang.String, java.lang.Object...))

    args - the list of arguments passed to the formatter. If there are more arguments than required by format, additional arguments are ignored.

    Returns:

    a character array containing the password, or null at EOF.

  • writer

    public PrintWriter writer()

    Returns the Writer associated with this console.