Class VMID
- All Implemented Interfaces:
Serializable
public final class VMID extends Object implements Serializable
A VMID is a identifier that is unique across all Java virtual machines. VMIDs are used by the distributed garbage collector to identify client VMs.
- See Also:
-
Constructor Summary
Constructor |
Description |
VMID() |
Create a new VMID. |
Method Summary
Modifier and Type |
Method |
Description |
boolean |
equals(Object obj) |
Compare this VMID to another, and return true if they are the same identifier. |
int |
hashCode() |
Compute hash code for this VMID. |
static boolean |
isUnique() |
Deprecated. |
String |
toString() |
Return string representation of this VMID. |
VMID
public VMID()
Create a new VMID. Each new VMID returned from this constructor is unique for all Java virtual machines under the following conditions: a) the conditions for uniqueness for objects of the class java.rmi.server.UID
are satisfied, and b) an address can be obtained for this host that is unique and constant for the lifetime of this object.
isUnique
@Deprecated public static boolean isUnique()
Deprecated.
Return true if an accurate address can be determined for this host. If false, reliable VMID cannot be generated from this host
- Returns:
- true if host address can be determined, false otherwise
hashCode
public int hashCode()
Compute hash code for this VMID.
- Overrides:
-
hashCode
in class Object
- Returns:
- a hash code value for this object.
- See Also:
-
equals
public boolean equals(Object obj)
Compare this VMID to another, and return true if they are the same identifier.
- Overrides:
-
equals
in class Object
- Parameters:
-
obj
- the reference object with which to compare. - Returns:
-
true
if this object is the same as the obj argument; false
otherwise. - See Also:
-
toString
public String toString()
Return string representation of this VMID.
- Overrides:
-
toString
in class Object
- Returns:
- a string representation of the object.
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.rmi/java/rmi/dgc/VMID.html