为类创建实例？ [英] Creating an instance for Class?

问题描述

查看Integer类的源代码，只需在下面的行中跳过

Looking at source code of Integer class, just stumble at this below line

Class<Integer>  TYPE = (Class<Integer>) Class.getPrimitiveClass("int");

并且 getPrimitiveClass 是一种本地方法。

And getPrimitiveClass is a native method.

 static native Class getPrimitiveClass(String name);

为什么成为本地方法？真的想知道。

Why it became a native method ? really want to know.

如何创建类的实例？这与创建ex： Ex e = new Ex（）的常规方法不同吗？

How one can create an instance for Class ?? Does that differs with normal way of creating instance for ex : Ex e = new Ex() ?

推荐答案

方法定义上面的注释说：

The comment above the method definition says:

/*
 * Return the Virtual Machine's Class object for the named
 * primitive type.
 */
 static native Class getPrimitiveClass(String name);

由于（至少，Sun的）虚拟机是在C中实现的，是该方法的原因是 native 。

Since the (at least, Sun's) Virtual Machine is implemented in C, then I would assume that this is the reason for the method being native.

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