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Reflection may allow a user to create unexpected control flow paths through an application, potentially bypassing security measures. This may be exploited by attackers. [4] Historical vulnerabilities in Java caused by unsafe reflection allowed code retrieved from potentially untrusted remote machines to break out of the Java sandbox security ...
The time overhead of a reflection call is traded for the space overhead of an inner class. Trampolines in Java usually involve the creation of a GenericListener to pass events to an outer class. [2] In Mono Runtime, trampolines are small, hand-written pieces of assembly code used to perform various tasks. [3]
In the Java computer programming language, an annotation is a form of syntactic metadata that can be added to Java source code. [1] Classes, methods, variables, parameters and Java packages may be annotated. Like Javadoc tags, Java annotations can be read from source files.
GraalVM Native Image improved gathering the reflection metadata distinguishing between queried and invoked reflection methods, added the initial compatibility for the Java Platform Module System, and several new optimizations to reduce the size of the executable and its build time. GraalVM 22.0.0 2022-01-18 Oracle JDK 11.0.14, 17.0.2
Reflection is a valuable language feature to facilitate metaprogramming. Metaprogramming was popular in the 1970s and 1980s using list processing languages such as Lisp . Lisp machine hardware gained some notice in the 1980s, and enabled applications that could process code.
Primitive wrapper classes are not the same thing as primitive types. Whereas variables, for example, can be declared in Java as data types double, short, int, etc., the primitive wrapper classes create instantiated objects and methods that inherit but hide the primitive data types, not like variables that are assigned the data type values.
ASM is Java-centric at present, and does not currently have a backend that exposes other bytecode implementations (such as .NET bytecode, Python bytecode, etc.). The name "ASM" is not an acronym: it is just a reference to the asm keyword of C, which allows some functions to be implemented in assembly language.
Download QR code; Print/export ... this is no more than a call to the visitor's visit method. ... subtitled "Java 1.2's reflection capabilities eliminate ...