java.lang
Class Boolean

java.lang.Object
  |
  +--java.lang.Boolean

public final class Boolean

extends Object

The Boolean class wraps a value of the primitive type boolean in an object. An object of type Boolean contains a single field whose type is boolean.

Since:

JDK1.0

Constructor Summary

Boolean(boolean value)
Allocates a Boolean object representing the value argument.

Method Summary

boolean	booleanValue() Returns the value of this Boolean object as a boolean primitive.
boolean	equals(Object obj) Returns true if and only if the argument is not null and is a Boolean object that represents the same boolean value as this object.
int	hashCode() Returns a hash code for this Boolean object.
String	toString() Returns a String object representing this Boolean's value.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Boolean

public Boolean(boolean value)

Allocates a Boolean object representing the value argument.

Parameters:

value - the value of the Boolean.

Method Detail

booleanValue

public boolean booleanValue()

Returns the value of this Boolean object as a boolean primitive.

Returns:

the primitive boolean value of this object.

toString

public String toString()

Returns a String object representing this Boolean's value. If this object represents the value true, a string equal to "true" is returned. Otherwise, a string equal to "false" is returned.

Overrides:

toString in class Object

Returns:

a string representation of this object.

hashCode

public int hashCode()

Returns a hash code for this Boolean object.

Overrides:

hashCode in class Object

Returns:

the integer 1231 if this object represents true; returns the integer 1237 if this object represents false.

See Also:

Object.equals(java.lang.Object), Hashtable

equals

public boolean equals(Object obj)

Returns true if and only if the argument is not null and is a Boolean object that represents the same boolean value as this object.

Overrides:

equals in class Object

Parameters:

obj - the object to compare with.

Returns:

true if the Boolean objects represent the same value; false otherwise.

See Also:

hashCode(), Hashtable