Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

This class is used by
Permissions to store a collection of
Permission objects that are all the same type.
Like the Permission class itself,
PermissionCollection defines an
implies( ) method
that can determine whether a requested Permission
is implied by any of the Permission objects in the
collection. Some Permission types may require a
custom PermissionCollection type in order to
correctly implement the implies( ) method. In this
case, the Permission subclass should override
newPermissionCollection( )
to return a Permission of the appropriate type.
PermissionCollection is used by system code that
manages security policies. Applications rarely need to use it.

Figure 14-28. java.security.PermissionCollection

public abstract class

PermissionCollection implements Serializable {
// Public Constructors
public

PermissionCollection ( );
// Public Instance Methods
public abstract void

add (Permission

permission );
public abstract java.util.Enumeration<Permission>

elements ( );
public abstract boolean

implies (Permission

permission );
public boolean

isReadOnly ( );
public void

setReadOnly ( );
// Public Methods Overriding Object
public String

toString ( );
}

Subclasses

Permissions

Passed To

ProtectionDomain.ProtectionDomain( )

Returned By

Too many methods to list.