Assigning a file type to a java program

Greeting,
I'm sorry if this was asked and answered before but I couldn't find it in my (admittedly cursory) search of this forum:
I wrote a program to display a binary file (OK. There are plenty of hex browsers, but I wanted it MY WAY). It works fine. I put in a hook to accept a file name in the command line arguments (argv). That works fine. I can't figure out how to make (in Windows) a file type assignment so that files of extension .bin are opened with this java program.
Can someone give me a hint?

Why don't you just write a batch file that takes a parameter and starts your viewer?
You can then associate the extension with that batch file.

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* Copyright (c) 2002-2005 TeamDev Ltd. All rights reserved.
* Use is subject to license terms.
* The complete licence text can be found at
* http://www.jniwrapper.com/pages/winpack/license
package com.jniwrapper.win32.shell;
import com.jniwrapper.Function;
import com.jniwrapper.LongInt;
import com.jniwrapper.Pointer;
import com.jniwrapper.UInt;
import com.jniwrapper.win32.registry.RegistryKey;
import com.jniwrapper.win32.registry.RegistryKeyType;
import com.jniwrapper.win32.registry.RegistryKeyValues;
import com.jniwrapper.win32.registry.RegistryException;
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* @author Vladimir Kondrashchenko
public class FileTypeAssociation
private static final String FUNCTION_SHCHANGENOTIFY = "SHChangeNotify";
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private static final long SHCNF_IDLIST = 0x0000;
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try
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return _extention;
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