为类生成多个.class文件? [英] Multiple .class files generated for a class?
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问题描述
出于好奇,为什么有时在编译后为一个类生成多个Java .class文件?例如,我的应用程序有六个类。对于一个类,已经生成了总共10个.class文件,从MyClass#1到MyClass#10。
Out of curiosity, why are sometimes multiple Java .class files generated for a class after compilation? For example, my application has six classes. For one class, a total of 10 .class files has been generated, starting from MyClass#1 up to MyClass#10.
推荐答案
These are for inner classes and static nested classes. The ones with numbers are anonymous inner classes.
例如:
class Foo {
class Bar { }
static class Baz { }
void run() {
Helper t = new Helper() {
int helpMethod() {
return 2;
}
};
}
}
这将产生类文件 Foo.class
, Foo $ Bar.class
, Foo $ Baz.class
code> Foo $ 1.class (用于执行 Helper
接口)
This will produce class files Foo.class
, Foo$Bar.class
, Foo$Baz.class
and Foo$1.class
(for the implementation of the Helper
interface)
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