Guard (Java SE 14 & JDK 14)
Description: declaration: module: java.base, package: java.security, interface: Guard
Keywords: java.security.Guard interface

Module java.base
Package java.security

# Interface Guard

All Known Implementing Classes:
  `AllPermission`, `AttachPermission`, `AudioPermission`, `AuthPermission`, `AWTPermission`, `BasicPermission`, `CardPermission`, `DelegationPermission`, `FilePermission`, `FlightRecorderPermission`, `InquireSecContextPermission`, `JDIPermission`, `LinkPermission`, `LoggingPermission`, `ManagementPermission`, `MBeanPermission`, `MBeanServerPermission`, `MBeanTrustPermission`, `NetPermission`, `NetworkPermission`, `Permission`, `PrivateCredentialPermission`, `PropertyPermission`, `ReflectPermission`, `RuntimePermission`, `SecurityPermission`, `SerializablePermission`, `ServicePermission`, `SocketPermission`, `SQLPermission`, `SSLPermission`, `SubjectDelegationPermission`, `UnresolvedPermission`, `URLPermission`

    public interface Guard

This interface represents a guard, which is an object that is used to protect access to another object.

This interface contains a single method, `checkGuard`, with a single `object` argument. `checkGuard` is invoked (by the GuardedObject `getObject` method) to determine whether or not to allow access to the object.

Since:
  1.2
See Also:
  `GuardedObject`

- ## Method Summary

  Modifier and Type | Method | Description
  --- | --- | ---
  `void` | `checkGuard​(Object object)` | Determines whether or not to allow access to the guarded object `object`.

- ## Method Details

  - ### checkGuard

    void checkGuard​(Object object) throws SecurityException
    Determines whether or not to allow access to the guarded object `object`. Returns silently if access is allowed. Otherwise, throws a SecurityException.
    Parameters:
      `object` - the object being protected by the guard.
    Throws:
      `SecurityException` - if access is denied.