org.apache.commons.lang.mutable
Class MutableBoolean

java.lang.Object
  org.apache.commons.lang.mutable.MutableBoolean

All Implemented Interfaces:

Serializable, Comparable, Mutable

public class MutableBoolean
extends Object
implements Mutable, Serializable, Comparable

A mutable boolean wrapper.

Since:

2.2

Version:

$Id: MutableBoolean.java 905707 2010-02-02 16:59:59Z niallp $

Author:

Apache Software Foundation

See Also:

Boolean, Serialized Form

Constructor Summary

MutableBoolean()
Constructs a new MutableBoolean with the default value of false.

MutableBoolean(boolean value)
Constructs a new MutableBoolean with the specified value.

MutableBoolean(Boolean value)
Constructs a new MutableBoolean with the specified value.

Method Summary

boolean	booleanValue() Returns the value of this MutableBoolean as a boolean.
int	compareTo(Object obj) Compares this mutable to another in ascending order.
boolean	equals(Object obj) Compares this object to the specified object.
Object	getValue() Gets the value as a Boolean instance.
int	hashCode() Returns a suitable hash code for this mutable.
boolean	isFalse() Checks if the current value is false.
boolean	isTrue() Checks if the current value is true.
void	setValue(boolean value) Sets the value.
void	setValue(Object value) Sets the value from any Boolean instance.
Boolean	toBoolean() Gets this mutable as an instance of Boolean.
String	toString() Returns the String value of this mutable.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MutableBoolean

public MutableBoolean()

Constructs a new MutableBoolean with the default value of false.

MutableBoolean

public MutableBoolean(boolean value)

Constructs a new MutableBoolean with the specified value.

Parameters:

value - the initial value to store

MutableBoolean

public MutableBoolean(Boolean value)

Constructs a new MutableBoolean with the specified value.

Parameters:

value - the initial value to store, not null

Throws:

NullPointerException - if the object is null

Method Detail

getValue

public Object getValue()

Gets the value as a Boolean instance.

Specified by:

getValue in interface Mutable

Returns:

the value as a Boolean, never null

setValue

public void setValue(boolean value)

Sets the value.

Parameters:

value - the value to set

setValue

public void setValue(Object value)

Sets the value from any Boolean instance.

Specified by:

setValue in interface Mutable

Parameters:

value - the value to set, not null

Throws:

NullPointerException - if the object is null

isTrue

public boolean isTrue()

Checks if the current value is true.

Returns:

true if the current value is true

Since:

2.5

isFalse

public boolean isFalse()

Checks if the current value is false.

Returns:

true if the current value is false

Since:

2.5

booleanValue

public boolean booleanValue()

Returns the value of this MutableBoolean as a boolean.

Returns:

the boolean value represented by this object.

toBoolean

public Boolean toBoolean()

Gets this mutable as an instance of Boolean.

Returns:

a Boolean instance containing the value from this mutable, never null

Since:

2.5

equals

public boolean equals(Object obj)

Compares this object to the specified object. The result is true if and only if the argument is not null and is an MutableBoolean object that contains the same boolean value as this object.

Overrides:

equals in class Object

Parameters:

obj - the object to compare with, null returns false

Returns:

true if the objects are the same; false otherwise.

hashCode

public int hashCode()

Returns a suitable hash code for this mutable.

Overrides:

hashCode in class Object

Returns:

the hash code returned by Boolean.TRUE or Boolean.FALSE

compareTo

public int compareTo(Object obj)

Compares this mutable to another in ascending order.

Specified by:

compareTo in interface Comparable

Parameters:

obj - the other mutable to compare to, not null

Returns:

negative if this is less, zero if equal, positive if greater where false is less than true

toString

public String toString()

Returns the String value of this mutable.

Overrides:

toString in class Object

Returns:

the mutable value as a string