Set the accessible flag for this reflected object to the indicated boolean value. A value of true indicates that the reflected object should suppress checks for Java language access control when it is used. A value of false indicates that the reflected object should enforce checks for Java language access control when it is used, with the variation noted in the class description.

This method may be used by a caller in class C to enable access to a member of declaring class D if any of the following hold:

• C and D are in the same module.
• The member is public and D is public in a package that the module containing Dexports to at least the module containing C.
• The member is protectedstatic, D is public in a package that the module containing D exports to at least the module containing C, and C is a subclass of D.
• D is in a package that the module containing Dopens to at least the module containing C. All packages in unnamed and open modules are open to all modules and so this method always succeeds when D is in an unnamed or open module.

This method may be used by JNI code with no caller class on the stack to enable access to a member of declaring class D if and only if:

• The member is public and D is public in a package that the module containing Dexports unconditionally.

This method cannot be used to enable access to private members, members with default (package) access, protected instance members, or protected constructors when the declaring class is in a different module to the caller and the package containing the declaring class is not open to the caller's module.

This method cannot be used to enable write access to a non-modifiable final field. The following fields are non-modifiable:

• static final fields declared in any class or interface
• final fields declared in a hidden class
• final fields declared in a record

The accessible flag when true suppresses Java language access control checks to only enable read access to these non-modifiable final fields.

If there is a security manager, its checkPermission method is first called with a ReflectPermission("suppressAccessChecks") permission.

Set the accessible flag for this reflected object to true if possible. This method sets the accessible flag, as if by invoking setAccessible(true), and returns the possibly-updated value for the accessible flag. If access cannot be enabled, i.e. the checks or Java language access control cannot be suppressed, this method returns false (as opposed to setAccessible(true) throwing InaccessibleObjectException when it fails).

This method is a no-op if the accessible flag for this reflected object is true.

For example, a caller can invoke trySetAccessible on a Method object for a private instance method p.T::privateMethod to suppress the checks for Java language access control when the Method is invoked. If p.T class is in a different module to the caller and package p is open to at least the caller's module, the code below successfully sets the accessible flag to true.

 


     p.T obj = ....;  // instance of p.T
     :
     Method m = p.T.class.getDeclaredMethod("privateMethod");
     if (m.trySetAccessible()) {
         m.invoke(obj);
     } else {
         // package p is not opened to the caller to access private member of T
         ...
     }
 

If this method is invoked by JNI code with no caller class on the stack, the accessible flag can only be set if the member and the declaring class are public, and the class is in a package that is exported unconditionally.

If there is a security manager, its checkPermission method is first called with a ReflectPermission("suppressAccessChecks") permission.

Get the value of the accessible flag for this reflected object.

Test if the caller can access this reflected object. If this reflected object corresponds to an instance method or field then this method tests if the caller can access the given obj with the reflected object. For instance methods or fields then the obj argument must be an instance of the declaring class . For static members and constructors then obj must be null.

This method returns true if the accessible flag is set to true, i.e. the checks for Java language access control are suppressed, or if the caller can access the member as specified in The Java Language Specification , with the variation noted in the class description. If this method is invoked by JNI code with no caller class on the stack, this method returns true if the member and the declaring class are public, and the class is in a package that is exported unconditionally.

Returns this element's annotation for the specified type if such an annotation is present, else null.

Note that any annotation returned by this method is a declaration annotation.

Returns true if an annotation for the specified type is present on this element, else false. This method is designed primarily for convenient access to marker annotations.

The truth value returned by this method is equivalent to: getAnnotation(annotationClass) != null

Returns annotations that are associated with this element. If there are no annotations associated with this element, the return value is an array of length 0. The difference between this method and AnnotatedElement.getAnnotation(Class) is that this method detects if its argument is a repeatable annotation type (JLS 9.6), and if so, attempts to find one or more annotations of that type by "looking through" a container annotation. The caller of this method is free to modify the returned array; it will have no effect on the arrays returned to other callers.

Note that any annotations returned by this method are declaration annotations.

Returns annotations that are present on this element. If there are no annotations present on this element, the return value is an array of length 0. The caller of this method is free to modify the returned array; it will have no effect on the arrays returned to other callers.

Note that any annotations returned by this method are declaration annotations.

Returns this element's annotation for the specified type if such an annotation is directly present , else null. This method ignores inherited annotations. (Returns null if no annotations are directly present on this element.)

Note that any annotation returned by this method is a declaration annotation.

Returns this element's annotation(s) for the specified type if such annotations are either directly present or indirectly present . This method ignores inherited annotations. If there are no specified annotations directly or indirectly present on this element, the return value is an array of length 0. The difference between this method and AnnotatedElement.getDeclaredAnnotation(Class) is that this method detects if its argument is a repeatable annotation type (JLS 9.6), and if so, attempts to find one or more annotations of that type by "looking through" a container annotation if one is present. The caller of this method is free to modify the returned array; it will have no effect on the arrays returned to other callers.

Note that any annotations returned by this method are declaration annotations.

Returns annotations that are directly present on this element. This method ignores inherited annotations. If there are no annotations directly present on this element, the return value is an array of length 0. The caller of this method is free to modify the returned array; it will have no effect on the arrays returned to other callers.

Note that any annotations returned by this method are declaration annotations.