Java Platform 1.2

java.rmi.dgc
Class VMID

java.lang.Object
  |
  +--java.rmi.dgc.VMID

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:
Serialized Form

Constructor Summary
VMID()
          Create a new VMID.
 
Method Summary
 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()
          Return true if an accurate address can be determined for this host.
 String toString()
          Return string representation of this VMID.
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

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.

The static method isUnique can be invoked to determine if an accurate address can be obtained for this host.

Method Detail

isUnique

public static boolean isUnique()
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

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

toString

public String toString()
Return string representation of this VMID.
Overrides:
toString in class Object

Java Platform 1.2

Submit a bug or feature Version 1.2 of Java Platform API Specification
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