Java™ Platform
Standard Ed. 6

java.rmi.dgc
Class VMID

java.lang.Object
  extended by java.rmi.dgc.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:
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()
          Deprecated.  
 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.

Method Detail

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:
Object.equals(java.lang.Object), Hashtable

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:
Object.hashCode(), Hashtable

toString

public String toString()
Return string representation of this VMID.

Overrides:
toString in class Object
Returns:
a string representation of the object.

Java™ Platform
Standard Ed. 6

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For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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