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Java 2 Platform SE v1.3.1: Class ReflectPermission - JDK 5 Documentation v1.3.1, Java 2 SDK 英文文档

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java.lang.reflect
Class ReflectPermission

java.lang.Object
  |
  +--java.security.Permission
        |
        +--java.security.BasicPermission
              |
              +--java.lang.reflect.ReflectPermission

All Implemented Interfaces:

Guard, Serializable

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public final class ReflectPermission

extends BasicPermission

The Permission class for reflective operations. A ReflectPermission is a named permission and has no actions. The only name currently defined is suppressAccessChecks, which allows suppressing the standard Java language access checks -- for public, default (package) access, protected, and private members -- performed by reflected objects at their point of use.

The following table provides a summary description of what the permission allows, and discusses the risks of granting code the permission.

Permission Target Name	What the Permission Allows	Risks of Allowing this Permission
suppressAccessChecks	ability to access fields and invoke methods in a class. Note that this includes not only public, but protected and private fields and methods as well.	This is dangerous in that information (possibly confidential) and methods normally unavailable would be accessible to malicious code.

Since:

1.2

See Also:

Permission, BasicPermission, AccessibleObject, Field.get(java.lang.Object), Field.set(java.lang.Object, java.lang.Object), Method.invoke(java.lang.Object, java.lang.Object[]), Constructor.newInstance(java.lang.Object[]), Serialized Form

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Constructor Summary

ReflectPermission(String name)           Constructs a ReflectPermission with the specified name.

ReflectPermission(String name, String actions)           Constructs a ReflectPermission with the specified name and actions.

 

Methods inherited from class java.security.BasicPermission

equals, getActions, hashCode, implies, newPermissionCollection

 

Methods inherited from class java.security.Permission

checkGuard, getName, toString

 

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

 

Constructor Detail

ReflectPermission

public ReflectPermission(String name)

Constructs a ReflectPermission with the specified name.

Parameters:

name - the name of the ReflectPermission

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ReflectPermission

public ReflectPermission(String name,
                         String actions)

Constructs a ReflectPermission with the specified name and actions. The actions should be null; they are ignored. This constructor exists for use by the Policy object to instantiate new Permission objects.

Parameters:

name - the name of the ReflectPermission

actions - should be null.

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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