Thrown if the index is negative or if it is greater than or equal to Is null and an ArrayIndexOutOfBoundsException will be The array reference and array index are checked.Ī NullPointerException will be thrown if the array reference When the returned method handle is invoked, The first and second arguments will be the array type and int. Its last argument will be the array's element type. The type of the method handle will have a void return type. Produces a method handle giving write access to elements of an array, arra圜onstructor public static MethodHandle arra圜onstructor( Class arra圜lass). Type Parameters: T - the desired type of the result, either Member or a subtype Parameters: target - a direct method handle to crack into symbolic reference components expected - a class object representing the desired result type T Returns: a reference to the method, constructor, or field object Throws: SecurityException - if the caller is not privileged to call setAccessible NullPointerException - if either argument is null IllegalArgumentException - if the target is not a direct method handle ClassCastException - if the member is not of the expected type Since: 1.8 Is called with a ReflectPermission("suppressAccessChecks") permission. If there is a security manager, its checkPermission method To resolve the symbolic reference to a member. On the target to obtain its symbolic reference, and then called To crack the target method handle, called The result is as if the user had obtained a lookup object capable enough reflectAs public static T reflectAs( Class expected,.Parameters: targetClass - the target class lookup - the caller lookup object Returns: a lookup object for the target class, with private access Throws: IllegalArgumentException - if targetClass is a primitve type or array class NullPointerException - if targetClass or caller is null IllegalAccessException - if the access check specified above fails SecurityException - if denied by the security manager Since: 9 See Also: (int) Shared with trusted parties without giving away PRIVATE and PACKAGEĪccess to the caller. A lookup object with the MODULE lookup mode can be Was created by code in the caller module (or derived from a lookup object originallyĬreated by the caller). API Note: The MODULE lookup mode serves to authenticate that the lookup object If there is a security manager, its checkPermission method is called toĬheck ReflectPermission("suppressAccessChecks"). The target class, then this check ensures that The lookup class, and m2 is the module containing This method checks that a caller, specified as a Lookup object, is allowed toĭo deep reflection on the target class. Returns a lookup object with full capabilities to emulate all privateLookupIn public static MethodHandles.Lookup privateLookupIn( Class targetClass,.Returns: a lookup object which is trusted minimally The lookup class can be changed to any other class C using an expression of the formīut may change the lookup context by virtue of changing the class loader.Ī public lookup object is always subject toĬaller sensitive methods. Consequently, the lookup context of this lookup object will be theīootstrap class loader, which means it cannot find user classes. Limited, there is no special access provided to the internals of Object, its package API Note: The use of Object is conventional, and because the lookup modes are Public classes in packages that are exported unconditionally.Īs a matter of pure convention, the lookup class It can only be used to create method handles to public members of The lookup has the PUBLIC and UNCONDITIONAL modes. Returns a lookup object which is trusted minimally.
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