How to create a working jar file for my program?

I am new to java, this is actually my first program. I seem to be having a problem creating a jar file for my java program. This is a very simple program that simply captures data from a website and then displays it in gui. The program depends on Jsoup and HtmlCleaner. Gui was made with JFormDesigner.

Returning to the problem, when I run the program using eclipse, everything works fine. No problem. However, when I run it as an exported jar (or a jar with Jar Maker), the GUI does not even appear. The strange thing is that when I run it with a file .bat, a graphical user interface is displayed, but the program does not do what it should do.

I'm really stuck, I'm not sure what to try next. Any help would be greatly appreciated.

//package com.stackoverflow.q2835505;


import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import java.awt.*;

import javax.swing.*;

import com.sun.xml.internal.ws.util.StringUtils;

public class TestDumper extends JFrame {
public static String test = "+";
public static String test1 = "-";
public static String itemID;
public static String stab;
public static String slash;
public static String crush;
public static String magic;
public static String range;
public static String stabDef;
public static String slashDef;
public static String crushDef;
public static String magicDef;
public static String rangeDef;
public static String Str;
public static String Prayer;
public static String lowAlch;
public static String highAlch;
public static String Name;
public boolean guiWait = false;
public static boolean printed = true;



    public static void main(String[] args) throws Exception {
        statGrabber g = new statGrabber();
        g.setDefaultCloseOperation(EXIT_ON_CLOSE);
        g.setVisible(true);

        for ( ; ; ) {
        while(g.test){
        String url = g.textField2.getText();
        Document document = Jsoup.connect(url).get();
        stab = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(2).text();
        slash = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(3).text();
        crush = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(4).text();
        magic = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(5).text();
        range = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(6).text();
        stabDef = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(7).text();
        slashDef = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(8).text();
        crushDef = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(9).text();
        magicDef = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(10).text();
        rangeDef = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(11).text();
        Str = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(16).text();
        Prayer = document.select("table.wikitable.smallpadding tbody tr td").tagName("TD").eq(17).text();
        Name = document.select("table.wikitable.infobox caption b").text();
        highAlch = document.select("table.wikitable.infobox tbody tr td").tagName("TD").eq(8).text();
        lowAlch =  document.select("table.wikitable.infobox tbody tr td").tagName("TD").eq(9).text();
        g.sweet = true;
       // String shopPrice = document.select("table.wikitable.infobox tbody tr td").tagName("TD").eq(11).text();


       if(stab.startsWith(test)){
           stab = stab.substring(1);
       }
       if(slash.startsWith(test)){
           slash = slash.substring(1);
       }
       if(crush.startsWith(test)){
           crush = crush.substring(1);
       }
       if(magic.startsWith(test)){
           magic.trim();
           magic = magic.substring(1);
       }
       if(range.startsWith(test)){
           range.trim();
           range = range.substring(1);
       }
       if(stabDef.startsWith(test)){
           stabDef = stabDef.substring(1);
       }
       if(slashDef.startsWith(test)){
           slashDef = slashDef.substring(1);
       }
       if(crushDef.startsWith(test)){
           crushDef = crushDef.substring(1);
       }
       if(magicDef.startsWith(test)){
           magicDef.trim();
           magicDef = magicDef.substring(1);
       }
       if(rangeDef.startsWith(test)){
           rangeDef.trim();
           rangeDef = rangeDef.substring(1);
       }
       if(Str.startsWith(test)){
           Str.trim();
           Str = Str.substring(1);
       }
       if(Prayer.startsWith(test)){
           Prayer.trim();
           Prayer = Prayer.substring(1);
       }


       if(highAlch.equalsIgnoreCase("Cannot be alchemised")){
           highAlch = "0";
           lowAlch = "0";
       }
       else{
           highAlch = highAlch.replace(",", "");
           highAlch = highAlch.replace(" ", "");
           highAlch = highAlch.replace("c", "");
           highAlch = highAlch.replace("o", "");
           highAlch = highAlch.replace("i", "");
           highAlch = highAlch.replace("n", "");
           highAlch = highAlch.replace("s", "");

           lowAlch = lowAlch.replace(",", "");
           lowAlch = lowAlch.replace(" ", "");
           lowAlch = lowAlch.replace("c", "");
           lowAlch = lowAlch.replace("o", "");
           lowAlch = lowAlch.replace("i", "");
           lowAlch = lowAlch.replace("n", "");
           lowAlch = lowAlch.replace("s", "");
       }

       while(printed){
        System.out.print("item = "+ itemID+"\t");
        System.out.print(Name.replace(" ", "_")+"\t");
        System.out.print(Name.replace(" ", "_")+"\t");
        System.out.print(highAlch+"\t");
        System.out.print(lowAlch+"\t");
        System.out.print("0\t");
        System.out.print(stab+"\t");
        System.out.print(slash+"\t");
        System.out.print(crush+"\t");
        System.out.print(magic+"\t");
        System.out.print(range+"\t");
        System.out.print(stabDef+"\t");
        System.out.print(slashDef+"\t");
        System.out.print(crushDef+"\t");
        System.out.print(magicDef+"\t");
        System.out.print(rangeDef+"\t");
        System.out.print(Str+"\t");
        System.out.print(Prayer+"\n");
        System.out.print("Connected!\n");
        printed = false;
       }
        }
    }
    }
    }