java - why is native c faster than java in android development

Question

I've read some articles about Android NDK. Most of them claim Native C is faster than Java but they didn't explain the reasons. Could anybody explain and give sources why is Native C faster?

Answer 1

Java 必须由虚拟机解释，而 C 直接与系统通信。问题是，由于必须解释 java，因此您可以说它在执行某些操作时必须通过检查点，而 C 具有直接通过。但是那个虚拟机也有一些优势。例如，它允许代码几乎可以在任何系统上运行。相比之下，C 依赖于机器。