Java performance: Difference between revisions

Revision as of 11:52, 30 January 2022

Revision as of 11:53, 30 January 2022

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A method named ''split-time verification'', first introduced in the [[Java Platform, Micro Edition]] (J2ME), is used in the JVM since [[Java version history|Java version 6]]. It splits the verification of [[Java bytecode]] in two phases:<ref>{{cite web

|url = https://apkpurejdk.comdev.pk/java-language-performance.net/verifier.html

|title = New Java SE 6 Feature: Type Checking Verifier

|publisher = Java.net

|access-date = January 18, 2011

}}{{dead link|date=November 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

*Design-time – when compiling a class from source to bytecode

*Runtime – when loading a class.

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|df = dmy-all

}}</ref> [[Java Native Access]] (JNA) provides [[Java (programming language)|Java]] programs easy access to native [[Shared library|shared libraries]] ([[dynamic-link library]] (DLLs) on Windows) via Java code only, with no JNI or native code. This functionality is comparable to Windows' Platform/Invoke and [[Python (programming language)|Python's]] ctypes. Access is dynamic at runtime without code generation. But it has a cost, and JNA is usually slower than JNI.<ref>{{Cite web

|url = https://apkpurejna.comdev.pk/java-language-performance.net/#performance

|title = javaHow lenguagedoes JNA performance compare to custom JNI?

|publisher = [[Sun Microsystems]]

|access-date = December 26, 2009

}}{{dead link|date=November 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

===User interface===