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java.lang.Objectmoka.lang.Object
Class Object
is the root of the class hierarchy.
Every class has Object
as a superclass. All objects
implement the methods of this class.
Constructor Summary | |
Object()
|
Method Summary | |
boolean |
equals(Object obj)
Indicates whether some other object is "equal to" this one. |
void |
finalize()
Called on an object to free the memory or system ressources used by this object. |
String |
getClassName()
Returns the class' name of an object. |
String |
toString()
Returns a string representation of the object. |
Methods inherited from class java.lang.Object |
clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public Object()
Method Detail |
public String toString()
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 memory address of the object.
public final String getClassName()
public void finalize()
finalize
method to dispose of
system resources or to perform other cleanup.
public boolean equals(Object obj)
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
, provided no information used in
equals
comparisons on the object is modified.
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
).
obj
- the reference object with which to compare.
true
if this object is the same as the obj
argument; false
otherwise.
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