comp102x

Class IO

java.lang.Object

comp102x.IO

public class IO
extends java.lang.Object

The IO class provides static methods for inputting from and outputting to the terminal.

Author:

leofan

Constructor Summary

Constructors

Constructor and Description
IO()

Method Summary

Modifier and Type	Method and Description
static long	inputBarcode() Reads the value represented by a barcode image loaded from a dialog.
static long	inputBarcode(java.lang.String pathname) Reads the value represented by a barcode image specified by a pathname.
static char	inputCharacter() Reads a character from the terminal.
static double	inputDouble() Reads a double from the terminal.
static float	inputFloat() Reads a float from the terminal.
static int	inputInteger() Reads an integer from the terminal.
static long	inputLong() Reads a long from the terminal.
static java.lang.String	inputString() Reads a string from the terminal.
static java.lang.String	inputTextImage() Reads the text in an image by performing Optical Character Recognition (OCR).
static java.lang.String	inputTextImage(java.lang.String pathname) Reads the text in an image by performing Optical Character Recognition (OCR).
static void	output(java.lang.Object value) Prints a value on the terminal.
static void	outputBarcode(long value) Saves a barcode image representing a specified value to the file system.
static void	outputln(java.lang.Object value) Prints a value on the terminal and jumps to a new line.

Methods inherited from class java.lang.Object

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

Constructor Detail

IO

public IO()

Method Detail

inputCharacter

public static char inputCharacter()

Reads a character from the terminal. A single character is read from the terminal, additional characters are discarded. White space is treated as a single character.

Returns:

The character read from the terminal.

inputString

public static java.lang.String inputString()

Reads a string from the terminal. Reads the entire string typed into the terminal. White spaces are kept.

Returns:

The string read form the terminal.

inputInteger

public static int inputInteger()

Reads an integer from the terminal. Reads an integer from the terminal, program exits if wrong input is given.

Returns:

The integer read from the terminal.

inputLong

public static long inputLong()

Reads a long from the terminal. Reads a long from the terminal, program exits if wrong input is given.

Returns:

The long read from terminal.

inputFloat

public static float inputFloat()

Reads a float from the terminal. Reads a float from the terminal, program exits if wrong input is given.

Returns:

The float read from the terminal.

inputDouble

public static double inputDouble()

Reads a double from the terminal. Reads a double from the terminal, program exits if wrong input is given.

Returns:

The double read from the terminal.

inputTextImage

public static java.lang.String inputTextImage()

Reads the text in an image by performing Optical Character Recognition (OCR).

Returns:

The text read from the image stored in a String.

inputTextImage

public static java.lang.String inputTextImage(java.lang.String pathname)

Reads the text in an image by performing Optical Character Recognition (OCR). The image is specified by a filename.

Parameters:

pathname - The filename of the image.

Returns:

The text read from the image stored in a String.

inputBarcode

public static long inputBarcode()

Reads the value represented by a barcode image loaded from a dialog.

Returns:

The value represented by the barcode. Minimum value of long is return if error occurs.

inputBarcode

public static long inputBarcode(java.lang.String pathname)

Reads the value represented by a barcode image specified by a pathname.

Parameters:

pathname - The pathname of the barcode image.

Returns:

The value represented by the barcode. Minimum value of long is return if error occurs.

outputBarcode

public static void outputBarcode(long value)

Saves a barcode image representing a specified value to the file system.

Parameters:

value - The value to be represented by the barcode.

outputln

public static void outputln(java.lang.Object value)

Prints a value on the terminal and jumps to a new line.

Parameters:

value - The value to be printed.

output

public static void output(java.lang.Object value)

Prints a value on the terminal.

Parameters:

value - The value to be printed.