bill.util
Class GetOpt

java.lang.Object
  |
  +--bill.util.GetOpt

public class GetOpt

extends Object

This class loosely imitates the functionality of the C get opt API. It parses an array of command line arguments looking for the specified list of switches, and, if requested, the switches' values.

Constructor Summary

GetOpt(String[] astrArgs, String strSwitches)
The class's creator.

Method Summary

String	getOption(char cSwitch) Gets the value of the specified switch.
String	getOption(Character aSwitch) Gets the value of the specified switch.
boolean	isOption(char cSwitch) Checks if the specified switch was entered on the command line.
boolean	isOption(Character aSwitch) Checks if the specified switch was entered on the command line.

Methods inherited from class java.lang.Object

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

Constructor Detail

GetOpt

public GetOpt(String[] astrArgs,
              String strSwitches)

The class's creator. Note that switches can either have a value associated with them (in which case they are specified with a colon (:) after them) or not.

For example if my application takes two command line switches, a and b, with a value required for a but not for b, the strSwitches parameter would contain the string "a:b"

Parameters:

astrArgs - The array of arguments to parse

strSwitches - The switches to look for

Method Detail

isOption

public boolean isOption(Character aSwitch)

Checks if the specified switch was entered on the command line.

Parameters:

aSwitch - The option to look for

Returns:

true if the switch was entered, false otherwise.

isOption

public boolean isOption(char cSwitch)

Checks if the specified switch was entered on the command line.

Parameters:

cSwitch - The option to look for

Returns:

true if the switch was entered, false otherwise.

getOption

public String getOption(Character aSwitch)

Gets the value of the specified switch. Note that for options which do not have a value, this method will return null.

Parameters:

aSwitch - The option to look for

Returns:

The option's value if it exists and has one, null otherwise

getOption

public String getOption(char cSwitch)

Gets the value of the specified switch. Note that for options which do not have a value, this method will return null.

Parameters:

cSwitch - The option to look for

Returns:

The option's value if it exists and has one, null otherwise