Modifier and Type | Method and Description |
---|---|
void |
and(BitSet bitset) |
void |
clear(int i) |
Object |
clone()
Creates a new object of the same class as this object.
|
boolean |
equals(Object obj)
Compares two Objects for equality.
|
boolean |
get(int i) |
int |
hashCode()
Returns a hash code value for the object.
|
void |
or(BitSet bitset) |
void |
set(int i) |
int |
size() |
String |
toString()
Returns a string representation of the object.
|
void |
xor(BitSet bitset) |
public void and(BitSet bitset)
bitset
- ?public void clear(int i)
i
- ?public Object clone()
Object
The clone
method of class Object
will
only clone an object whose class indicates that it is willing for
its instances to be cloned. A class indicates that its instances
can be cloned by declaring that it implements the
Cloneable
interface.
public 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 Object
obj
- the reference object with which to compare.true
if this object is the same as the obj
argument; false
otherwise.Boolean.hashCode()
,
Hashtable
public boolean get(int i)
i
- ?public int hashCode()
Object
java.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 Object
Object.equals(java.lang.Object)
,
Hashtable
public void or(BitSet bitset)
bitset
- ?public void set(int i)
i
- ?public int size()
public String toString()
Object
toString
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 void xor(BitSet bitset)
bitset
- ?