Guard

AI-generated Key Takeaways

• The Guard interface is used for protecting access to an object through the checkGuard method.

• checkGuard determines if access to the guarded object is allowed, throwing a SecurityException if denied.

• Most known subclasses of Guard are legacy security code and are not recommended for use on Android.

• LinkPermission is an exception and is used for link creation operations.

public interface Guard

Known Indirect Subclasses AllPermission, BasicPermission, FilePermission, LinkPermission, LoggingPermission, NetPermission, Permission, PrivateCredentialPermission, PropertyPermission, ReflectPermission, RuntimePermission, SQLPermission, SecurityPermission, SerializablePermission, SocketPermission AllPermission Legacy security code; do not use.  BasicPermission Legacy security code; do not use.  FilePermission Legacy security code; do not use.  LinkPermission The Permission class for link creation operations.  LoggingPermission Legacy security code; do not use.  NetPermission Legacy security code; do not use.  Permission Legacy security code; do not use.  PrivateCredentialPermission Legacy security code; do not use.  PropertyPermission Legacy security code; do not use.  ReflectPermission Legacy security code; do not use.  RuntimePermission Legacy security code; do not use.  SQLPermission Legacy security code; do not use.  SecurityPermission Legacy security code; do not use.  SerializablePermission This legacy security is not supported on Android.  SocketPermission Legacy security code; do not use.

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.

See Also

• GuardedObject

Public Method Summary

abstract void

checkGuard(Object object) Determines whether or not to allow access to the guarded object object.

Public Methods

public abstract void checkGuard (Object object)

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.