apache-commons-config PropertiesConfiguration：最后一个属性丢失后的注释

# *** A comment
GameCheck.no=No
**#  end coment**

# *** A comment
GameCheck.no = myvar

package trials;

import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.configuration.PropertiesConfigurationLayout;

import java.io.FileWriter;
import java.io.IOException;

public class EditVersion {

    public static void main(String[] args) {

        try {
            PropertiesConfiguration config =  new PropertiesConfiguration(\"C:\\\\try\\\\in.properties\");
            config.setProperty(\"application.version\", \"myvar\");
            PropertiesConfigurationLayout layout = config.getLayout();

            config.save( new FileWriter( \"c:/try/out.props\"));
        } catch (ConfigurationException e) {

        } catch (IOException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        }
    }
}