Policy

AI-generated Key Takeaways

• Policy is a legacy security class and should not be used in new code.

• It provides mechanisms for defining and enforcing security policies for Java applications.

• Developers can obtain policy instances, retrieve permissions for code sources or protection domains, and refresh the policy.

• Policy includes methods for determining if a policy implies a specific permission for a given domain.

• It's advised to explore newer security frameworks for modern applications.

public abstract class Policy extends Object

Legacy security code; do not use.

Nested Class Summary

interface

Policy.Parameters

Field Summary

public static final PermissionCollection

UNSUPPORTED_EMPTY_COLLECTION

Public Constructor Summary

Policy()

Public Method Summary

static Policy	getInstance(String type, Policy.Parameters params)
static Policy	getInstance(String type, Policy.Parameters params, Provider provider)
static Policy	getInstance(String type, Policy.Parameters params, String provider)
Policy.Parameters	getParameters()
PermissionCollection	getPermissions(ProtectionDomain domain)
PermissionCollection	getPermissions(CodeSource codesource)
static Policy	getPolicy()
Provider	getProvider()
String	getType()
boolean	implies(ProtectionDomain domain, Permission permission)
void	refresh()
static void	setPolicy(Policy p)

Inherited Method Summary

From class java.lang.Object

Object	clone() Creates and returns a copy of this Object.
boolean	equals(Object obj) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of Class that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long timeout, int nanos) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait(long timeout) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.

Fields

public static final PermissionCollection UNSUPPORTED_EMPTY_COLLECTION

Public Constructors

public Policy ()

Public Methods

public static Policy getInstance (String type, Policy.Parameters params)

Parameters

type
params

Throws

NoSuchAlgorithmException

public static Policy getInstance (String type, Policy.Parameters params, Provider provider)

Parameters

type
params
provider

Throws

NoSuchAlgorithmException

public static Policy getInstance (String type, Policy.Parameters params, String provider)

Parameters

type
params
provider

Throws

NoSuchProviderException
NoSuchAlgorithmException

public Policy.Parameters getParameters ()

public PermissionCollection getPermissions (ProtectionDomain domain)

Parameters

domain

public PermissionCollection getPermissions (CodeSource codesource)

Parameters

codesource

public static Policy getPolicy ()

public Provider getProvider ()

public String getType ()

public boolean implies (ProtectionDomain domain, Permission permission)

Parameters

domain
permission

public void refresh ()

public static void setPolicy (Policy p)

Parameters

p