Java Read XML Settings File

import classess.LogFile;
import classess.LogFile;
import java.io.File;
import javax.swing.JOptionPane;
import org.dom4j.*;
import org.dom4j.io.SAXReader;

/**
 *
 * @author CycoLabs
 */
public class AppSettings {

    private String appmode;
    private String terminalname;
    private String dbonlineautoupload;
    private String dbserverip;
    private String dbtimecheckinuri;
    boolean b = false;

    ////////////////////////////////////////////////
    private static AppSettings appsettings;

    private AppSettings() {
    }

    public static AppSettings getAppSettings() {
        System.gc();
        if (appsettings == null) {
            appsettings = new AppSettings();
        }
        return appsettings;
    }
    ////////////////////////////////////////////////

    public boolean setLoadAppSettings() {
        b = false;
        try {
            //File file = ;
            SAXReader reader = new SAXReader();
            Document document = reader.read(new File("appsettings.xml"));
            AppSettings.getAppSettings().setAppmode(document.selectSingleNode("//settings/appmode").getText());
            AppSettings.getAppSettings().setDBOnlineAutoUpload(document.selectSingleNode("//settings/dbonlineautoupload").getText());
            AppSettings.getAppSettings().setDBServerIP(document.selectSingleNode("//settings/dbserverip").getText());
            b = true;
        } catch (Exception e) {
            e.printStackTrace();
            b = false;
            LogFile.log(getClass().getName(), "setLoadAppSettings", e.getMessage().toString(), null);
            JOptionPane.showMessageDialog(null, "App Settings Error!\nSystem cannot run anymore.\nSystem will exit now.\n"+e.getMessage().toString(), "CRITICAL ERROR", JOptionPane.ERROR_MESSAGE);
            System.exit(1);
        }
        return b;
    }

    /**
     * @return the appmode
     */
    public String getAppmode() {
        return appmode;
    }

    /**
     * @param appmode the appmode to set
     */
    private void setAppmode(String appmode) {
        System.out.println("appmode: " + appmode);
        this.appmode = appmode;
    }

    /**
     * @return the terminalname
     */
    public String getTerminalName() {
        return terminalname;
    }

    /**
     * @param terminalname the terminalname to set
     */
    private void setTerminalName(String terminalname) {
        System.out.println("terminalname: " + terminalname);
        this.terminalname = terminalname;
    }

    /**
     * @return the dbautoupload
     */
    public String getDBOnlineAutoUpload() {
        return dbonlineautoupload;
    }

    /**
     * @param dbautoupload the dbautoupload to set
     */
    private void setDBOnlineAutoUpload(String dbonlineautoupload) {
        System.out.println("dbonlineautoupload: " + dbonlineautoupload);
        this.dbonlineautoupload = dbonlineautoupload;
    }

    /**
     * @return the terminalip
     */
    public String getDBServerIP() {
        return dbserverip;
    }

    /**
     * @param terminalip the terminalip to set
     */
    public void setDBServerIP(String dbserverip) {
        System.out.println("dbserverip: " + dbserverip);
        this.dbserverip = dbserverip;
    }

    /**
     * @return the dbtimecheckin
     */
    public String getDbtimecheckinuri() {
        return dbtimecheckinuri;
    }

    /**
     * @param dbtimecheckin the dbtimecheckin to set
     */
    public void setDbtimecheckinuri(String dbtimecheckinuri) {
        System.out.println("dbtimecheckinuri: " + dbtimecheckinuri);
        this.dbtimecheckinuri = dbtimecheckinuri;
    }
}

XML File -> appsettings.xml

<?xml version = "1.0"?>
<settings>
<appmode>d</appmode>
<dbserverip>localhost</dbserverip>
<dbonlineautoupload>0</dbonlineautoupload>
</settings>