How to include files from SVN repository in maven project

I have a project named com.myorg.HelloWorld. It is a maven java project in IDEA. I have got a SVN repository like http://urlsvn/svn/core, that contains

• /src/util_1.java
• /src/util_2.java
• /src/util_3.java

and

• /class/util_1.class
• /class/util_2.class
• /class/util_3.class

I want it automatically include/update 2 files (util_1.class, util_2.class) from SVN repository into my Maven project and use them in my project(import ...).