Saving worlds to new files?

Hello, I'm trying to make a really neat plugin that will save all the loaded worlds on the server, and save them in a new file so they can be called for traveling to, but I'm not sure on how-to do it.
Could I get some help here?

 

@Kakarot798 This is not a Util and does not belong here it belongs here: http://bukkit.org/forums/plugin-development.5/

 

This post dosent belong here
@Kakarot798
Click here its belong here

 

Moved to Plugin Developement.


@gal0511Dev @ProStriker123
Please use the Report Button for such things.

 

Ok, woops. My bad, didn't quite know where to put it. Atleast it's in the correct spot now.

 

That link isn't even valid.
EDIT by Timtower: now it is.


@Kakarot798 Can you be more specific? Are you asking how to copy worlds?

 

yah, I wanna be-able to get the list of the loaded worlds, and then copy their current data, make a new world folder for them, and store them.

Like making a new world, but not with new data.

 

@Kakarot798 You would have to unload the worlds, and copy every file from the folder and subfolders to a new folder.

 

But how would I do this?

 

@Kakarot798 Read Bukkit's Javadocs and look into Java's file I/O API and you will know

 

How?

 

@Kakarot798 http://jd.bukkit.org/rb/apidocs/ and http://docs.oracle.com/javase/tutorial/essential/io/

 

I have no idea what I'm even looking at, or looking for when I looked at those. Can someone just tell me or give me an example of some sort so I can get this hard part out of the way? D:

 

@Kakarot798 http://docs.oracle.com/javase/7/docs/api/java/io/File.html

 

I'm still absolutely confused.

 

@Kakarot798 If you don't know how to read JavaDocs, know what to look for in them, or even know what they are, then you certainly don't have enough Java knowledge to be doing this. Please learn Java before attempting to make a Bukkit plugin.

 

Guys cmon... -.-'

@Kakarot798
There are multiple ways of copying a File, and one of them is to use an InputStream and an OutputStream. You basically read from the original file and write to the copy. It's simpler for directories, as you only need to create a new one with the same name. It gets a more complicated when you have to consider sub-folders and their contents. In Java you can list all files and directories of a directory using File#listFiles(). Also keep in mind that this will not return sub-directories and their contents, so you'll have to fix that manually. Here's a pseudo-code of the average copy algorithm:

Copy directory pseudo-code (open) Copy directory pseudo-code (close)

PHP:

void copy(File sourceDir, File destDir) {
    for-each file in sourceDir.listFiles()
         if file.isDirectory()
             // [ Insert code to create new directory ]
             copy(file, new File(destDir, file))
         else
             // [Insert code to create & copy new file ]
}

Hope it helped. If not, Google is your best friend. Try this, this, this, if you're still stuck after that, this one, this, or finally that one.