java.lang.Object | |
↳ | sun.management.LazyCompositeData |
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This abstract class provides the implementation of the CompositeData interface. A CompositeData object will be lazily created only when the CompositeData interface is used. Classes that extends this abstract class will implement the getCompositeData() method. The object returned by the getCompositeData() is an instance of CompositeData such that the instance serializes itself as the type CompositeDataSupport.
Public Constructors | |||||||||||
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Public Methods | |||||||||||
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Returns true if and only if this CompositeData instance contains
an item whose name is key.
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Returns true if and only if this CompositeData instance contains an item
whose value is value.
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Indicates whether some other object is "equal to" this one.
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Returns the value of the item whose name is key.
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Returns an array of the values of the items whose names are specified by keys, in the same order as keys.
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Returns the composite type of this composite data instance.
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Returns a hash code value for the object.
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Returns a string representation of the object.
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Returns an unmodifiable Collection view of the item values contained in this CompositeData instance.
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Protected Methods | |||||||||||
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Returns the CompositeData representing this object.
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Compares two CompositeTypes and returns true if
all items in type1 exist in type2 and their item types
are the same.
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Designate to a CompositeData object when writing to an
output stream during serialization so that the receiver
only requires JMX 1.2 classes but not any implementation
specific class.
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Inherited Methods | |||||||||||
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Returns true if and only if this CompositeData instance contains an item whose name is key. If key is a null or empty String, this method simply returns false.
key | the key to be tested. |
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Returns true if and only if this CompositeData instance contains an item whose value is value.
value | the value to be tested. |
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Indicates whether some other object is "equal to" this one.
The equals
method implements an equivalence relation
on non-null object references:
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
objects 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 non-null 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
).
Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.
obj | the reference object with which to compare. |
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true
if this object is the same as the obj
argument; false
otherwise.Returns the value of the item whose name is key.
key | the name of the item. |
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Returns an array of the values of the items whose names are specified by keys, in the same order as keys.
keys | the names of the items. |
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Returns the composite type of this composite data instance.
Returns a hash code value for the object. This method is
supported for the benefit of hashtables such as those provided by
java.util.Hashtable
.
The general contract of hashCode
is:
hashCode
method on each of
the two objects must produce the same integer result.
equals(java.lang.Object)
method, then calling the hashCode method on each of the
two objects must produce distinct integer results. However, the
programmer should be aware that producing distinct integer results
for unequal objects may improve the performance of hashtables.
As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the JavaTM programming language.)
Returns a string representation of the object. In general, the
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. In other words, this method returns a string equal to the
value of:
getClass().getName() + '@' + Integer.toHexString(hashCode())
Returns an unmodifiable Collection view of the item values contained in this CompositeData instance. The returned collection's iterator will return the values in the ascending lexicographic order of the corresponding item names.
Returns the CompositeData representing this object. The returned CompositeData object must be an instance of javax.management.openmbean.CompositeDataSupport class so that no implementation specific class is required for unmarshalling besides JMX 1.2 classes.
Compares two CompositeTypes and returns true if all items in type1 exist in type2 and their item types are the same.
Designate to a CompositeData object when writing to an output stream during serialization so that the receiver only requires JMX 1.2 classes but not any implementation specific class.
ObjectStreamException |
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