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## java.rmi.dgc
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:
  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

    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.

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For further API reference and developer documentation, see Java 2 SDK 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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