Java reflection implementation method, device and system

Abstract

The invention discloses a Java reflection implementation method, device and system. The reflection implementation method includes the steps: generating reflection processing classes for Java classes by a Java byte code framework ASM in loading of Java virtual machine startup classes; acquiring index values of Java class methods from the reflection processing classes; storing the reflection processing classes and the index values into a cache and binding the reflection processing classes and the index values with Java classes by the cache; reflecting and calling the Java class methods based onthe reflection processing classes and the index values in the cache. According to the Java reflection implementation method, Java reflection performance and efficiency can be improved by the reflection implementation method based on the Java byte code framework ASM and the cache.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a Java reflection realization method, device and system. Background technique [0002] The Java reflection mechanism mainly refers to the ability to allow access, detection and modification of its own state or behavior when the program is running. In the process of Java project development, the Java reflection mechanism is often used for the flexibility of the program. It can facilitate programmers to create flexible codes that can be assembled at runtime without re-modifying the code and recompiling. [0003] The advantages of the Java reflection mechanism are mainly reflected in its dynamics, and can reduce the coupling between classes, greatly improving the flexibility and scalability of the system, and combined with Java dynamic compilation, it can achieve powerful functions. [0004] Usually, to run a Java program, the Java class must first be loaded by the Java virtual m...

AI Technical Summary

Problems solved by technology

The Java reflection process needs to do some compilation work and interpretation operations at runtime, such as syntax checking, parsing bytecode, parsing objects in memory, etc. The Java virtual machine cannot optimize the code, so the class is called through Java reflection The efficiency of the method is lower than the direct call, and the performance is slower than the direct call

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