org.gjt.rec.util
Class Booleans

java.lang.Object
  |
  +--org.gjt.rec.util.Booleans

public final class Booleans

extends Object

A toolbox of tools that work with boolean and Boolean.

See Also:

Boolean

Nested Class Summary

static class

Booleans.FlagType

Field Summary

static String

REVISION

Method Summary

static Boolean	parse(String flagString) Works out the Boolean value represented by a particular string.
static Boolean	parse(String flagString, Booleans.FlagType flagType) Works out the Boolean value represented by a particular string using a particular flag convention.
static boolean	parseBoolean(String flagString) Works out the boolean value represented by a particular string.
static boolean	parseBoolean(String flagString, Booleans.FlagType flagType) Works out the boolean value represented by a particular string using a particular flag convention.
static String	toString(boolean booleanValue, Booleans.FlagType flagType) Converts a particular boolean value to its string representation using a particular flag convention.
static String	toString(Boolean b, Booleans.FlagType flagType) Converts a particular Boolean value to its string representation using a particular flag convention.
static Boolean	wrap(boolean booleanValue) Returns an instance of Boolean representing a particular boolean value.

Methods inherited from class java.lang.Object

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

Field Detail

REVISION

public static final String REVISION

See Also:

Constant Field Values

Method Detail

wrap

public static Boolean wrap(boolean booleanValue)

Returns an instance of Boolean representing a particular boolean value. The same instance will be used for all true boolean values, i.e. the Boolean objects are flyweighted.

Parameters:

booleanValue - the boolean value to wrap

Returns:

the Boolean representing booleanValue

parse

public static Boolean parse(String flagString)
                     throws ParseException

Works out the Boolean value represented by a particular string.

Parameters:

flagString - the string in which to look for a boolean value representation

Returns:

the Boolean value represented by flagString or null if flagString is null

Throws:

ParseException - if flagString represents neither true, false nor null

parse

public static Boolean parse(String flagString,
                            Booleans.FlagType flagType)
                     throws ParseException

Works out the Boolean value represented by a particular string using a particular flag convention.

Parameters:

flagString - the string in which to look for a boolean value representation

flagType - the flag convention to use when parsing the boolean string representation. true or false values in other conventions will result in a ParseException

Throws:

NullPointerException - if flagType is null

ParseException - if flagString represents neither true, false nor null

parseBoolean

public static boolean parseBoolean(String flagString)
                            throws ParseException

Works out the boolean value represented by a particular string.

Parameters:

flagString - the string in which to look for a boolean value representation

Throws:

NullPointerException - if flagString is null

ParseException - if flagString represents neither true nor false

parseBoolean

public static boolean parseBoolean(String flagString,
                                   Booleans.FlagType flagType)
                            throws ParseException

Works out the boolean value represented by a particular string using a particular flag convention.

Parameters:

flagString - the string in which to look for a boolean value representation

flagType - the flag convention to use when parsing the boolean string representation. true or false values in other conventions will result in a ParseException

Throws:

NullPointerException - if flagString is null

ParseException - if flagString represents neither true nor false

toString

public static String toString(Boolean b,
                              Booleans.FlagType flagType)

Converts a particular Boolean value to its string representation using a particular flag convention.

Parameters:

flagType - the flag convention to use

b - the value to convert

Returns:

the string representation of b or null if b is null

Throws:

NullPointerException - if flagType is null

toString

public static String toString(boolean booleanValue,
                              Booleans.FlagType flagType)

Converts a particular boolean value to its string representation using a particular flag convention.

Parameters:

flagType - the flag convention to use

booleanValue - the value to convert

Returns:

the string representation of booleanValue

Throws:

NullPointerException - if flagType is null