Class VMID

java.lang.Object
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:

  • Constructor Summary

    Constructors
    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.

    Methods declared in class Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • 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 Details

    • 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:
      the receiver's hash.
      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 - Object the object to compare with this object.
      Returns:
      boolean true if the object is the same as this object false if it is different from this object.
      See Also:

    • toString

      public String toString()
      Return string representation of this VMID.
      Overrides:
      toString in class Object
      Returns:
      String a printable representation for the receiver.