File	Doc	Category	Size	Date	Package
FilePermissionCollection.java	API Doc	Android 1.5 API	3572	Wed May 06 22:41:04 BST 2009	java.io

FilePermissionCollection

• java.lang.Object
  • java.security.PermissionCollection

Fields Summary
private static final long	serialVersionUID
Vector	permissions

Constructors Summary
public FilePermissionCollection() Construct a new FilePermissionCollection super();

Methods Summary
public void	add(java.security.Permission permission) Add a permission object to the permission collection. param permission the FilePermission object to add to the collection. throws IllegalArgumentException if {@code permission} is not an instance of {@code FilePermission}. throws IllegalStateException if this collection is read-only. see java.security.PermissionCollection#add(java.security.Permission) if (isReadOnly()) { throw new IllegalStateException(); } if (permission instanceof FilePermission) { permissions.addElement(permission); } else { throw new IllegalArgumentException(permission.toString()); }
public java.util.Enumeration	elements() Returns an enumeration for the collection of permissions. return a permission enumeration for this permission collection. see java.security.PermissionCollection#elements() return permissions.elements();
public boolean	implies(java.security.Permission permission) Indicates whether this permissions collection implies a specific {@code permission}. param permission the permission to check. see java.security.PermissionCollection#implies(java.security.Permission) if (permission instanceof FilePermission) { FilePermission fp = (FilePermission) permission; int matchedMask = 0; int i = 0; while (i < permissions.size() && ((matchedMask & fp.mask) != fp.mask)) { // Cast will not fail since we added it matchedMask |= ((FilePermission) permissions.elementAt(i)) .impliesMask(permission); i++; } return ((matchedMask & fp.mask) == fp.mask); } return false;