File	Doc	Category	Size	Date	Package
BasicPermission.java	API Doc	Java SE 6 API	16014	Tue Jun 10 00:25:46 BST 2008	java.security

BasicPermission

• java.lang.Object
  • java.security.Permission

Fields Summary
private static final long	serialVersionUID
private transient boolean	wildcard
private transient String	path
private transient boolean	exitVM

Constructors Summary
public BasicPermission(String name) Creates a new BasicPermission with the specified name. Name is the symbolic name of the permission, such as "setFactory", "print.queueJob", or "topLevelWindow", etc. param name the name of the BasicPermission. throws NullPointerException if name is null. throws IllegalArgumentException if name is empty. super(name); init(name);
public BasicPermission(String name, String actions) Creates a new BasicPermission object with the specified name. The name is the symbolic name of the BasicPermission, and the actions String is currently unused. param name the name of the BasicPermission. param actions ignored. throws NullPointerException if name is null. throws IllegalArgumentException if name is empty. super(name); init(name);

Methods Summary
public boolean	equals(java.lang.Object obj) Checks two BasicPermission objects for equality. Checks that obj's class is the same as this object's class and has the same name as this object. param obj the object we are testing for equality with this object. return true if obj is a BasicPermission, and has the same name as this BasicPermission object, false otherwise. if (obj == this) return true; if ((obj == null) || (obj.getClass() != getClass())) return false; BasicPermission bp = (BasicPermission) obj; return getCanonicalName().equals(bp.getCanonicalName());
public java.lang.String	getActions() Returns the canonical string representation of the actions, which currently is the empty string "", since there are no actions for a BasicPermission. return the empty string "". return "";
final java.lang.String	getCanonicalName() Returns the canonical name of this BasicPermission. All internal invocations of getName should invoke this method, so that the pre-JDK 1.6 "exitVM" and current "exitVM.*" permission are equivalent in equals/hashCode methods. return the canonical name of this BasicPermission. return exitVM ? "exitVM.*" : getName();
public int	hashCode() Returns the hash code value for this object. The hash code used is the hash code of the name, that is, getName().hashCode(), where getName is from the Permission superclass. return a hash code value for this object. return this.getCanonicalName().hashCode();
public boolean	implies(java.security.Permission p) Checks if the specified permission is "implied" by this object. More specifically, this method returns true if: p's class is the same as this object's class, and p's name equals or (in the case of wildcards) is implied by this object's name. For example, "a.b.*" implies "a.b.c". param p the permission to check against. return true if the passed permission is equal to or implied by this permission, false otherwise. if ((p == null) || (p.getClass() != getClass())) return false; BasicPermission that = (BasicPermission) p; if (this.wildcard) { if (that.wildcard) { // one wildcard can imply another return that.path.startsWith(path); } else { // make sure ap.path is longer so a.b.* doesn't imply a.b return (that.path.length() > this.path.length()) && that.path.startsWith(this.path); } } else { if (that.wildcard) { // a non-wildcard can't imply a wildcard return false; } else { return this.path.equals(that.path); } }
private void	init(java.lang.String name) initialize a BasicPermission object. Common to all constructors. if (name == null) throw new NullPointerException("name can't be null"); int len = name.length(); if (len == 0) { throw new IllegalArgumentException("name can't be empty"); } char last = name.charAt(len - 1); // Is wildcard or ends with ".*"? if (last == '*" && (len == 1 || name.charAt(len - 2) == '.")) { wildcard = true; if (len == 1) { path = ""; } else { path = name.substring(0, len - 1); } } else { if (name.equals("exitVM")) { wildcard = true; path = "exitVM."; exitVM = true; } else { path = name; } }
public java.security.PermissionCollection	newPermissionCollection() Returns a new PermissionCollection object for storing BasicPermission objects. A BasicPermissionCollection stores a collection of BasicPermission permissions. BasicPermission objects must be stored in a manner that allows them to be inserted in any order, but that also enables the PermissionCollection implies method to be implemented in an efficient (and consistent) manner. return a new PermissionCollection object suitable for storing BasicPermissions. return new BasicPermissionCollection();
private void	readObject(java.io.ObjectInputStream s) readObject is called to restore the state of the BasicPermission from a stream. s.defaultReadObject(); // init is called to initialize the rest of the values. init(getCanonicalName());