com.wordesign.util
Class ConsoleReader
java.lang.Object
|
+--com.wordesign.util.ConsoleReader
- public class ConsoleReader
- extends java.lang.Object
Title: First Course In Java: examples and HomeWorks
Description: This class is a utility class to read input from the
Command Line
Copyright: Copyright (c) 2001
Method Summary |
static void |
main(java.lang.String[] args)
This is a simple test method. |
static double |
readDouble()
This method reads a double value from the command line, it returns only
once a correct double has been entered, if the user enters text that
cannot be parsed as a double, this method will inform the user
and ask for the data again. |
static int |
readInt()
This method reads an integer from the command line, it returns only
once a correct integer has been entered, if the user enters text that
cannot be parsed as an integer, this method will inform the user
and ask for the data again. |
static java.lang.String |
readLine()
This method reads a line of text from the command line, it waits until a
line of text is entered (the user has to press return) and then returns |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ConsoleReader
public ConsoleReader()
readInt
public static int readInt()
- This method reads an integer from the command line, it returns only
once a correct integer has been entered, if the user enters text that
cannot be parsed as an integer, this method will inform the user
and ask for the data again.
- Returns:
- returns an int that represents the value entered by the user
readDouble
public static double readDouble()
- This method reads a double value from the command line, it returns only
once a correct double has been entered, if the user enters text that
cannot be parsed as a double, this method will inform the user
and ask for the data again.
- Returns:
- returns a double that represents the value entered by the user
readLine
public static java.lang.String readLine()
- This method reads a line of text from the command line, it waits until a
line of text is entered (the user has to press return) and then returns
- Returns:
- returns the line the user entered, this method does not return
a null value, but might return an empty string ("").
main
public static void main(java.lang.String[] args)
- This is a simple test method.