# Class NTSidPrimaryGroupPrincipal

java.lang.Object
com.sun.security.auth.NTSid
com.sun.security.auth.NTSidPrimaryGroupPrincipal

All Implemented Interfaces:
  `Serializable, Principal`

public class NTSidPrimaryGroupPrincipal extends NTSid
This class extends `NTSid` and represents a Windows NT user's primary group SID.

Principals such as this `NTSidPrimaryGroupPrincipal` may be associated with a particular `Subject` to augment that `Subject` with an additional identity. Refer to the `Subject` class for more information on how to achieve this. Authorization decisions can then be based upon the Principals associated with a `Subject`.

Since:
  1.4
See Also:
  - `Principal`
  - `Subject`
  - Serialized Form

## Constructor Summary

Constructors
Constructor
Description
`NTSidPrimaryGroupPrincipal(String name)`
Create an `NTSidPrimaryGroupPrincipal` with a Windows NT group SID.

## Method Summary

Modifier and Type
Method
Description
`boolean`
`equals(Object o)`
Compares the specified Object with this `NTSidPrimaryGroupPrincipal` for equality.
`String`
`toString()`
Return a string representation of this `NTSidPrimaryGroupPrincipal`.

### Methods declared in class NTSid

`getName, hashCode`

### Methods declared in class Object

`clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

### Methods declared in interface Principal

`implies`

## Constructor Details

### NTSidPrimaryGroupPrincipal

public NTSidPrimaryGroupPrincipal(String name)
Create an `NTSidPrimaryGroupPrincipal` with a Windows NT group SID.

Parameters:
  `name` - the primary Windows NT group SID for this user.
Throws:
  `NullPointerException` - if the `name` is `null`.

## Method Details

### toString

public String toString()
Return a string representation of this `NTSidPrimaryGroupPrincipal`.

Specified by:
  `toString` in interface `Principal`
Overrides:
  `toString` in class `NTSid`
Returns:
  a string representation of this `NTSidPrimaryGroupPrincipal`.

### equals

public boolean equals(Object o)
Compares the specified Object with this `NTSidPrimaryGroupPrincipal` for equality. Returns true if the given object is also a `NTSidPrimaryGroupPrincipal` and the two NTSidPrimaryGroupPrincipals have the same SID.

Specified by:
  `equals` in interface `Principal`
Overrides:
  `equals` in class `NTSid`
Parameters:
  `o` - Object to be compared for equality with this `NTSidPrimaryGroupPrincipal`.
Returns:
  true if the specified Object is equal to this `NTSidPrimaryGroupPrincipal`.
See Also:
  - `Object.hashCode()`
  - `HashMap`