EDIT

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.Properties;

	/**

	 * This method will write language properties to the config.ini located in the configuration folder

	 * of the Taxonomic Ediitor. <b>This method is only used to set the default language for Taxonomic Editor.</b>

	 *

	 * @param setLanguage 0 is for german and 1 for english.

	 * @throws IOException

	 */

    public void writePropertyToConfigFile(int setLanguage) throws IOException {

        File file = org.eclipse.core.runtime.preferences.ConfigurationScope.INSTANCE.getLocation().toFile();

        Properties properties = load(file.getAbsolutePath()+"/config.ini");

        switch(setLanguage){

        case 0:

            properties.setProperty("osgi.nl", "de");

            PreferencesUtil.getPreferenceStore().setValue(IPreferenceKeys.DEFAULT_LANGUAGE_EDITOR, "de");

            break;

        case 1:

            properties.setProperty("osgi.nl", "en");

            PreferencesUtil.getPreferenceStore().setValue(IPreferenceKeys.DEFAULT_LANGUAGE_EDITOR, "en");

            break;

        default:

            break;

        }

        save(file+"/config.ini", properties);

    }

    /**

     * This method loads a property from a given file and returns it.

     *

     * @param filename

     * @return

     * @throws IOException

     */

    private Properties load(String filename) throws IOException {

        FileInputStream in = new FileInputStream(filename);

        Properties prop = new Properties();

        prop.load(in);

        in.close();

        return prop;

    }

    /**

     * This method saves a property to the specified file.

     *

     * @param filename

     * @param properties

     * @throws IOException

     */

    private void save(String filename, Properties properties) throws IOException{

        FileOutputStream fos =  new FileOutputStream(filename);

        properties.store(fos, "");

        fos.close();

    }