VMID (Java Platform SE 8 )
Keywords: java.rmi.dgc.VMID class
Date: 2015-11-19

compact2, compact3
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

    Constructors
    Constructor and Description
    `VMID()` Create a new VMID.

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
    Modifier and Type | Method and 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 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)`, `System.identityHashCode(java.lang.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`
      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()`, `HashMap`

    - #### 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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