Java.io.FilePermission Class

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Introduction

The Java.io.FilePermission class represents access to a file or directory.It consists of a pathname and a set of actions valid for that pathname.Following are the important points about FilePermission:

  • The actions to be granted are passed to the constructor in a string containing a list of one or more comma-separated keywords. The possible keywords are "read", "write", "execute", and "delete".

  • Code can always read a file from the same directory it's in (or a subdirectory of that directory); it does not need explicit permission to do so.

Class declaration

Following is the declaration for Java.io.FilePermission class:

public final class FilePermission
   extends Permission
      implements Serializable

Class constructors

S.N.Constructor & Description
1FilePermission(String path, String actions)
This creates a new FilePermission object with the specified actions.

Class methods

S.N.Method & Description
1 boolean equals(Object obj)
This method checks two FilePermission objects for equality.
2 String getActions()
This method returns the "canonical string representation" of the actions.
3 int hashCode()
This method returns the hash code value for this object.
4 boolean implies(Permission p)
This method checks if this FilePermission object "implies" the specified permission.
5 PermissionCollection newPermissionCollection()
This method returns a new PermissionCollection object for storing FilePermission objects.

Methods inherited

This class inherits methods from the following classes:

  • Java.io.Permission

  • Java.io.Object




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