public final class Float extends Number
| Modifier and Type | Field and Description |
|---|---|
static float |
MAX_VALUE
MAX_VALUE
|
static float |
MIN_VALUE
MIN_VALUE
|
static float |
NaN
NaN
|
static float |
NEGATIVE_INFINITY
NEGATIVE_INFINITY
|
static float |
POSITIVE_INFINITY
POSITIVE_INFINITY
|
static Class |
TYPE
TYPE
|
| Constructor and Description |
|---|
Float(double d)
Float
|
Float(float f) |
Float(String s) |
| Modifier and Type | Method and Description |
|---|---|
byte |
byteValue() |
double |
doubleValue() |
boolean |
equals(Object obj)
Compares two Objects for equality.
|
static int |
floatToIntBits(float f) |
float |
floatValue() |
int |
hashCode()
Returns a hash code value for the object.
|
static float |
intBitsToFloat(int i) |
int |
intValue() |
boolean |
isInfinite() |
static boolean |
isInfinite(float f) |
boolean |
isNaN() |
static boolean |
isNaN(float f) |
long |
longValue() |
short |
shortValue() |
String |
toString()
Returns a string representation of the object.
|
static String |
toString(float f) |
static Float |
valueOf(float f)
Returns a
Float instance representing the specified
float value. |
static Float |
valueOf(String s) |
public static final float POSITIVE_INFINITY
public static final float NEGATIVE_INFINITY
public static final float NaN
public static final float MAX_VALUE
public static final float MIN_VALUE
public static final Class TYPE
public Float(double d)
d - ?public Float(float f)
f - ?public Float(String s) throws NumberFormatException
s - ?NumberFormatException - ?public double doubleValue()
doubleValue in class Numberpublic boolean equals(Object obj)
Object
The equals method implements an equivalence relation:
x,
x.equals(x) should return true.
x and
y, x.equals(y) should return
true if and only if y.equals(x) returns
true.
x,
y, and z, if x.equals(y)
returns true and y.equals(z) returns
true, then x.equals(z) should return
true.
x
and y, multiple invocations of x.equals(y)
consistently return true or consistently return
false.
x, x.equals(null)
should return false.
The equals method for class Object implements the most
discriminating possible equivalence relation on objects; that is,
for any reference values x and y, this
method returns true if and only if x and
y refer to the same object (x==y has the
value true).
equals in class Objectobj - the reference object with which to compare.true if this object is the same as the obj
argument; false otherwise.Boolean.hashCode(),
Hashtablepublic static int floatToIntBits(float f)
f - ?public float floatValue()
floatValue in class Numberpublic int hashCode()
Objectjava.util.Hashtable.
The general contract of hashCode is:
hashCode method
must consistently return the same integer. This integer need not
remain consistent from one execution of an application to another
execution of the same application.
equals
method, then calling the hashCode method on each of the
two objects must produce the same integer result.
hashCode in class ObjectObject.equals(java.lang.Object),
Hashtablepublic static float intBitsToFloat(int i)
i - ?public boolean isInfinite()
public static boolean isInfinite(float f)
f - ?public boolean isNaN()
public static boolean isNaN(float f)
f - ?public short shortValue()
shortValue in class Numberpublic String toString()
ObjecttoString method returns a string that
"textually represents" this object. The result should
be a concise but informative representation that is easy for a
person to read.
It is recommended that all subclasses override this method.
The toString method for class Object
returns a string consisting of the name of the class of which the
object is an instance, the at-sign character `@', and
the unsigned hexadecimal representation of the hash code of the
object.
public static String toString(float f)
f - ?public static Float valueOf(String s) throws NumberFormatException
s - ?NumberFormatException - ?public static Float valueOf(float f)
Float instance representing the specified
float value.f - a float value.Float instance representing f.