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`java.lang.Object`

`java.lang.Boolean`

**Implemented Interfaces:**- Comparable<T>, Serializable

Instances of class

`Boolean`

represent primitive
`boolean`

values.
**Since:**- 1.0

**See Also:**- Serialized Form

## Field Summary

`static Boolean`

`FALSE`

- This field is a
`Boolean`

object representing the primitive value`false`

.

`static Boolean`

`TRUE`

- This field is a
`Boolean`

object representing the primitive value`true`

.

`static Class`

`TYPE`

- The primitive type
`boolean`

is represented by this`Class`

object.

## Constructor Summary

`Boolean(boolean value)`

- Create a
`Boolean`

object representing the value of the argument`value`

.

## Method Summary

`boolean`

`booleanValue()`

- Return the primitive
`boolean`

value of this`Boolean`

object.

`int`

`boolean`

`static boolean`

`getBoolean(String name)`

- If the value of the system property
`name`

matches "true" ignoring case then the function returns`true`

.

`int`

`hashCode()`

- Returns the integer
`1231`

if this object represents the primitive`true`

and the integer`1237`

otherwise.

`static boolean`

`parseBoolean(String b)`

- If the String argument is "true", ignoring case, return true.

`String`

`toString()`

- Returns "true" if the value of this object is
`true`

and returns "false" if the value of this object is`false`

.

`static String`

`toString(boolean b)`

- Returns "true" if the value of the give boolean is
`true`

and returns "false" if the value of the given boolean is`false`

.

`static Boolean`

`valueOf(boolean b)`

- Returns the Boolean
`TRUE`

if the given boolean is`true`

, otherwise it will return the Boolean`FALSE`

.

`static Boolean`

### Methods inherited from class java.lang.Object

`clone`

,`equals`

,`extends Object> getClass`

,`finalize`

,`hashCode`

,`notify`

,`notifyAll`

,`toString`

,`wait`

,`wait`

,`wait`

public static final Boolean FALSE

This field is a`Boolean`

object representing the primitive value`false`

. This instance is returned by the static`valueOf()`

methods if they return a`Boolean`

representing`false`

.

public static final Boolean TRUE

This field is a`Boolean`

object representing the primitive value`true`

. This instance is returned by the static`valueOf()`

methods if they return a`Boolean`

representing`true`

.

public static final ClassTYPE

The primitive type`boolean`

is represented by this`Class`

object.

Since:- 1.1

public Boolean(boolean value)

Create a`Boolean`

object representing the value of the argument`value`

. In general the use of the static method`valueof(boolean)`

is more efficient since it will not create a new object.

Parameters:`value`

- the primitive value of this`Boolean`

See Also:`valueOf(boolean)`

public Boolean(String s)

Creates a`Boolean`

object representing the primitive`true`

if and only if`s`

matches the string "true" ignoring case, otherwise the object will represent the primitive`false`

. In general the use of the static method`valueof(String)`

is more efficient since it will not create a new object.

Parameters:`s`

- the`String`

representation of`true`

or false

public boolean booleanValue()

Return the primitive`boolean`

value of this`Boolean`

object.

Returns:- true or false, depending on the value of this Boolean

public int compareTo(Boolean other)

Compares this Boolean to another.

Parameters:`other`

- the Boolean to compare this Boolean to

Returns:- 0 if both Booleans represent the same value, a positive number if this Boolean represents true and the other false, and a negative number otherwise.

Since:- 1.5

public boolean equals(Object obj)

If the`obj`

is an instance of`Boolean`

and has the same primitive value as this object then`true`

is returned. In all other cases, including if the`obj`

is`null`

,`false`

is returned.

Parameters:`obj`

- possibly an instance of any`Class`

Returns:- true if
`obj`

equals this

public static boolean getBoolean(String name)

If the value of the system property`name`

matches "true" ignoring case then the function returns`true`

.

Parameters:`name`

- the property name to look up

Returns:- true if the property resulted in "true"

Throws:`SecurityException`

- if accessing the system property is forbidden

See Also:`System.getProperty(String)`

public int hashCode()

Returns the integer`1231`

if this object represents the primitive`true`

and the integer`1237`

otherwise.

Returns:- the hash code

public static boolean parseBoolean(String b)

If the String argument is "true", ignoring case, return true. Otherwise, return false.

Parameters:`b`

- String to parse

Since:- 1.5

public String toString()

Returns "true" if the value of this object is`true`

and returns "false" if the value of this object is`false`

.

Returns:- the string representation of this

public static String toString(boolean b)

Returns "true" if the value of the give boolean is`true`

and returns "false" if the value of the given boolean is`false`

.

Parameters:`b`

- the boolean to convert

Returns:- the string representation of the boolean

Since:- 1.4

public static Boolean valueOf(boolean b)

Returns the Boolean`TRUE`

if the given boolean is`true`

, otherwise it will return the Boolean`FALSE`

.

Parameters:`b`

- the boolean to wrap

Returns:- the wrapper object

Since:- 1.4

public static Boolean valueOf(String s)

Returns the Boolean`TRUE`

if and only if the given String is equal, ignoring case, to the the String "true", otherwise it will return the Boolean`FALSE`

.

Parameters:`s`

- the string to convert

Returns:- a wrapped boolean from the string

Boolean.java -- object wrapper for boolean
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