Java

Reflection

Documentation Contents
Reflection enables Java code to discover information about the fields, methods and constructors of loaded classes, and to use reflected fields, methods, and constructors to operate on their underlying counterparts on objects, within security restrictions. The API accommodates applications that need access to either the public members of a target object (based on its runtime class) or the members declared by a given class.

The JavaTM 2 Platform allows programs to suppress default reflective access control.

Performance Enhancement
Beginning with J2SDK 1.4.0, certain reflective operations, specifically java.lang.reflect.Field, java.lang.reflect.Method.invoke(), java.lang.reflect.Constructor.newInstance(), and Class.newInstance(), have been rewritten for higher performance. Reflective invocations and instantiations are several times faster than in previous releases.
Dynamic Proxy Classes
Reflection Overview

Suppressing Reflective Access Control
Reflection API Specification
(javadoc)

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