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Interface Principal

All Known Subinterfaces:
GroupPrincipal, UserPrincipal
All Known Implementing Classes:
HttpPrincipal, Identity, IdentityScope, JMXPrincipal, KerberosPrincipal, LdapPrincipal, NTDomainPrincipal, NTSid, NTSidDomainPrincipal, NTSidGroupPrincipal, NTSidPrimaryGroupPrincipal, NTSidUserPrincipal, NTUserPrincipal, Signer, UnixNumericGroupPrincipal, UnixNumericUserPrincipal, UnixPrincipal, UserPrincipal, X500Principal 
public interface Principal
This interface represents the abstract notion of a Principal, which can be used to represent any entity, such as an individual, a corporation, and a login id.
Since:
1.1
See Also:

Method Summary

Modifier and Type Method Description
boolean equals(Object another)
Compares this Principal to the specified object.
String getName()
Returns the name of this Principal.
int hashCode()
Returns a hashcode for this Principal.
default boolean implies(Subject subject)
Returns true if the specified subject is implied by this Principal.
String toString()
Returns a string representation of this Principal.

Method Details

equals

boolean equals(Object another)
Compares this Principal to the specified object. Returns true if the object passed in matches the Principal represented by the implementation of this interface.
Overrides:
equals in class Object
Parameters:
another - Principal to compare with.
Returns:
true if the Principal passed in is the same as that encapsulated by this Principal, and false otherwise.
See Also:

toString

String toString()
Returns a string representation of this Principal.
Overrides:
toString in class Object
Returns:
a string representation of this Principal.

hashCode

int hashCode()
Returns a hashcode for this Principal.
Overrides:
hashCode in class Object
Returns:
a hashcode for this Principal.
See Also:

getName

String getName()
Returns the name of this Principal.
Returns:
the name of this Principal.

implies

default boolean implies(Subject subject)
Returns true if the specified subject is implied by this Principal.
Implementation Requirements:
The default implementation of this method returns true if subject is non-null and contains at least one Principal that is equal to this Principal.

Subclasses may override this with a different implementation, if necessary.

Parameters:
subject - the Subject
Returns:
true if subject is non-null and is implied by this Principal, or false otherwise.
Since:
1.8

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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/security/Principal.html