![]() ![]() I am still surprised about the lambda access performance, why it is not close to the direct access performance. The SET-order is: DIRECT - LAMBDA - METHODHANDLE - METHOD - FIELD. #JAVA REFLECTION PERFORMANCE IMPROVEMENT CODE#May java developer don't want to use second option because you want to stay away from native code due to portability issue, but it is worth trying it to see what type of performance we get. The GET-order is (best performant): DIRECT - LAMBDA - METHODHANDLE - FIELD - METHOD. There are couple of options ASM, javassist for that. benchmark tested the tool to seek the improvement of runtime performance by using compile-time reflection (Section 5). ![]() There are some byte code manipulation API that we can use to generate such class. Some of my measurements showed more than 1000 performance improvement. Use some native call to perform reflection.įirst option looks such a naive thing, you don't want to write all that and if your class has lot of function then it become nightmare to maintain it. By creating and reusing delegates, you can optimize your reflection code multiple times. Go back to normal method call by writing big IF-ELSEIF-ELSE for each method MethodHandles gives good abstraction for reflection, but on performance side it is very slow, so i am sure you want to re think before you use it. stable version that has several performance improvements over the older versions. Wow it is very very slow 106X times slow compared reflection, i don't want to compare with with normal method call. If you have a choice, choose Java 8 over the older versions of Java. ![]()
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