Client and backend. This class is shared: the same code is compiled into your app and into your server, so everything on this page works in both.

public final class Boolean

Object
Boolean

ImplementsComparable<Boolean>

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, CLDC 1.0

Fields

`public static final` `Boolean FALSE`	The Boolean object corresponding to the primitive value false.
`public static final` `Boolean TRUE`	The Boolean object corresponding to the primitive value true.
`public static final` `Class<Boolean> TYPE`

Constructors

`public Boolean(boolean value)`	Allocates a Boolean object representing the value argument.
`public Boolean(String s)`	Deprecated A Boolean of `parseBoolean(s)`.

Methods

`public boolean booleanValue()`	Returns the value of this Boolean object as a boolean primitive.
`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.
`public int hashCode()`	Returns a hash code for this Boolean object.
`public` `String toString()`	Returns a String object representing this Boolean’s value.
`public static` `Boolean valueOf(boolean b)`	Returns the object instance of i
`public static` `Boolean valueOf(String b)`
`public static boolean parseBoolean(String s)`
`public int compareTo(Boolean b2)`	Compares this object to the specified object to determine their relative order.
`public static` `String toString(boolean b)`	`"true"` or `"false"`.
`public static int hashCode(boolean value)`	1231 for true, 1237 for false, as the JDK hashes them.
`public static int compare(boolean x, boolean y)`	0 when equal, otherwise positive when `x` is true.
`public static boolean logicalAnd(boolean a, boolean b)`	`a && b`.
`public static boolean logicalOr(boolean a, boolean b)`	`a \|\| b`.
`public static boolean logicalXor(boolean a, boolean b)`	`a ^ b`.
`public static boolean getBoolean(String name)`	Whether the system property `name` is `"true"`, ignoring case.

Inherited methods

From Object

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

Field details

FALSE

public static final Boolean FALSE

The Boolean object corresponding to the primitive value false.

TRUE

public static final Boolean TRUE

The Boolean object corresponding to the primitive value true.

TYPE

public static final Class<Boolean> TYPE

Constructor details

Boolean

public Boolean(boolean value)

Allocates a Boolean object representing the value argument. value - the value of the Boolean.

Boolean

public Boolean(String s)

Deprecated.

A Boolean of parseBoolean(s).

Method details

booleanValue

public boolean booleanValue()

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

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.

hashCode

public int hashCode()

Returns a hash code for this Boolean 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.

valueOf

public static Boolean valueOf(boolean b)

Returns the object instance of i

Parameters

b boolean: the primitive

Returns

object instance

valueOf

public static Boolean valueOf(String b)

parseBoolean

public static boolean parseBoolean(String s)

compareTo

public int compareTo(Boolean b2)

Compares this object to the specified object to determine their relative order.

Parameters

b2 Boolean: the object to compare to this instance.

Returns

a negative integer if this instance is less than another; a positive integer if this instance is greater than another; 0 if this instance has the same order as another.

Throws

ClassCastException: if another cannot be converted into something comparable to this instance.

toString

public static String toString(boolean b)

"true" or "false".

hashCode

public static int hashCode(boolean value)

1231 for true, 1237 for false, as the JDK hashes them.

compare

public static int compare(boolean x, boolean y)

0 when equal, otherwise positive when x is true.

logicalAnd

public static boolean logicalAnd(boolean a, boolean b)

a && b.

logicalOr

public static boolean logicalOr(boolean a, boolean b)

a || b.

logicalXor

public static boolean logicalXor(boolean a, boolean b)

a ^ b.

getBoolean

public static boolean getBoolean(String name)

Whether the system property name is "true", ignoring case.