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Closeable.java Question

Harry Preston

Joined: Jun 01, 2013
Posts: 9
From JDK, Closeable.java

But AutoCloseable is located java.lang

How does Closeable know where to find AutoCloseable?
Jeanne Boyarsky
author & internet detective

Joined: May 26, 2003
Posts: 31669

Good question! java.lang is a special package. It is automatically imported whether the class specifies it or not. Other common classes like Integer and String are located in that package as well. That's why you can just write Integer.parseInt("111") without having to import anything.

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Harry Preston

Joined: Jun 01, 2013
Posts: 9
Got it, thanks much
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subject: Closeable.java Question