本机 Java 方法是否等同于静态 Java 方法?

Are native Java methods equivalent to static Java methods?(本机 Java 方法是否等同于静态 Java 方法?)

问题描述

我正在将一些本机方法重写为常规 Java 方法.

I am rewriting some native methods as regular Java methods.

本地方法实际上是静态的吗?或者是否有过隐含this"参数的情况?

Are native methods effectively static? Or is there ever a case where they have an implicit 'this' parameter?

谢谢！

推荐答案

Native 方法可以是 static 或非 static，就像常规 Java 方法一样.

Native methods can be static or non-static, just like regular Java methods.

非static 原生方法接收 this 引用，static 则接收对包含类的引用.

Non-static native methods receive this reference, static ones receive a reference to containg class instead.

来自 JNI 规范:

本机方法参数

JNI 接口指针是本地方法的第一个参数.JNI 接口指针的类型为 JNIEnv.第二个参数根据本机方法是静态的还是非静态的而有所不同.非静态本机方法的第二个参数是对对象的引用.静态本机方法的第二个参数是对其 Java 类的引用.

The JNI interface pointer is the first argument to native methods. The JNI interface pointer is of type JNIEnv. The second argument differs depending on whether the native method is static or nonstatic. The second argument to a nonstatic native method is a reference to the object. The second argument to a static native method is a reference to its Java class.

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