Line order in Java manifest file

Is the order of lines in the manifest file important?

Someone tried to convince me that when the manifest file changed, things would break

Manifest-Version: 1.0 
Class-Path: xxx.jar 
Main-Class: com.something

to

Manifest-Version: 1.0 
Main-Class: com.something
Class-Path: xxx.jar

(the main class and class path lines are opposite.)

Solution

No, the order of these two lines doesn't matter

This is a reference to the documentation:

Internally, the list is represented by HashMap, which is an unordered data structure If you want to take a closer look, this is the source code java util. jar. Manifest.

> http://www.massapi.com/source/jdk1.6.0_17/src/java/util/jar/Manifest.java.html