User friendly data mining

Script

import java.awt.CardLayout;
import java.awt.Image;
import java.awt.Toolkit;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

import javax.swing.ImageIcon;
import javax.swing.JEditorPane;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.filechooser.FileFilter;

class FileExtFilter extends FileFilter {

	public FileExtFilter(String ext, String label, boolean includeDir) {
		this.ext = ext;
		this.label = label;
		this.includeDir = includeDir;
	}

	public String getDescription() {
		return this.label;
	}

	public boolean accept(File file) {
		if (file.isDirectory() && includeDir) {
			return true;
		} else {
			return file.getName().endsWith(this.ext);
		}
	}

	String ext, label;

	boolean includeDir;
}

if (title == void) {
	title = "Arff File";
}

if ((fileExtensions == void) || (fileExtensions == null)) {
	fileExtensions = ".arff";
}

if ((fileExtLabels == void) || (fileExtLabels == null)) {
	fileExtLabels = "";
}

JFileChooser chooser = new JFileChooser();
chooser.setDialogTitle(title);

String[] fileTypeList = fileExtensions.split(",");
String[] filterLabelList = fileExtLabels.split(",");

if (fileTypeList != null && filterLabelList != null && fileTypeList.length != filterLabelList.length) {
	throw new RuntimeException("The list of extensions and file filter labels must be the same length");
}

// create the file filters
for (int i = 0; i < fileTypeList.length; i++) {
	FileExtFilter filter = new FileExtFilter(fileTypeList[i], filterLabelList[i], true);
	chooser.setFileFilter(filter);
}

chooser.showOpenDialog(null);
File file = chooser.getSelectedFile();
selectedFile = file.getAbsolutePath();
name = file.getName();

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