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java.lang.Objectjava.lang.Boolean
@TransactionType(value=NOT_SUPPORTED) public final class 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
.
Instances of the Boolean class are not bound to any context and can be
passed between contexts without any restrictions. Objects created and returned
by the methods of this class are owned by the caller. In particular, a call to the toString()
returns a String instance bound to the owner context of the caller.
See Runtime Environment Specification for the Java Card Platform, Connected Edition, chapter 7 for details regarding transfer of ownership.
Field Summary | |
---|---|
static Boolean |
FALSE
The Boolean object corresponding to the primitive value
false . |
static Boolean |
TRUE
The Boolean object corresponding to the primitive value
true . |
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. |
static Boolean |
valueOf(boolean b)
Returns a Boolean instance representing the specified boolean value. |
Methods inherited from class java.lang.Object |
---|
getClass, notify, notifyAll, wait, wait, wait |
Field Detail |
---|
public static final Boolean TRUE
Boolean
object corresponding to the primitive value
true
.
public static final Boolean FALSE
Boolean
object corresponding to the primitive value
false
.
Constructor Detail |
---|
public Boolean(boolean value)
Boolean
object representing the
value
argument.
value
- the value of the Boolean
.Method Detail |
---|
public boolean booleanValue()
boolean
value of this object.public String toString()
true
, a string equal to
"true"
is returned. Otherwise, a string equal to
"false"
is returned.
toString
in class Object
public int hashCode()
hashCode
in class Object
Object.equals(java.lang.Object)
,
Hashtable
public boolean equals(Object obj)
true
if and only if the argument is not
null
and is a Boolean
object that
represents the same boolean
value as this object.
equals
in class Object
obj
- the object to compare with.
true
if the Boolean objects represent the same
value; false
otherwise.hashCode()
,
Hashtable
public static Boolean valueOf(boolean b)
Boolean(boolean)
, as this method is likely to yield
significantly better space and time performance.
b
- a boolean value.
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