Output jframe information to command window

Question

Hi all I have a program that tracks the assets of a customer, kind of like a cart that holds cds, appliances, etc...
I wanted to be able to print out the results to the command window after they enter the number of how many items from what the user enters after they press "current status" or if they "delete" their current items. I want it to keep doing this until they close the window and exit the program. People have told me to add the System.out.println to where it says "delete" or "current status" but Im not sure how to add it in I will attach the code here. Thanks
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
public class TestProgram extends JFrame implements ActionListener{
   JLabel column1, column2;
   JLabel totalItems, totalCost;
   JLabel serialNum;
   JLabel electronics, autos, furnitures, cds;
   JButton TrackAssets, delete;
   JPanel panel;
   JTextField electronicsAsset, autosAsset, furnituresAsset, cdsAsset;
   JTextField serialNumber;
   JTextArea items, cost;
   // constructor to initialize the top variables/fields
   public TestProgram()
         column1 = new JLabel("Select Items");
     column2 = new JLabel("Specify Quantity");
     electronics = new JLabel("Electronics");
     electronicsAsset = new JTextField();
     electronicsAsset.addActionListener(this);
     autos = new JLabel("Autos");
     autosAsset = new JTextField();
     autosAsset.addActionListener(this);
     furnitures = new JLabel("Furnitures");
     furnituresAsset = new JTextField();
     furnituresAsset.addActionListener(this);
     cds = new JLabel("Compact Discs");
     cdsAsset = new JTextField();
     cdsAsset.addActionListener(this);
     serialNum = new JLabel("Serial Number input here");
     serialNumber = new JTextField();
     electronicsAsset.setNextFocusableComponent(serialNumber);
//Create labels and text area components
     totalItems = new JLabel("Total Items:");
     totalCost = new JLabel("Total Cost:");
     items = new JTextArea();
     cost = new JTextArea();
//Create buttons and make action listeners
     TrackAssets = new JButton("Current Status");
     TrackAssets.addActionListener(this);
     delete = new JButton("Delete all");
     delete.addActionListener(this);
//Create a panel for the components
     panel = new JPanel();
//Set panel layout to 2-column grid
//on a white
     panel.setLayout(new GridLayout(0,4));
     panel.setBackground(Color.white);
// add details
     getContentPane().add(panel);
     panel.add(column1);
     panel.add(column2);
     panel.add(electronics);
     panel.add(electronicsAsset);
     panel.add(autos);
     panel.add(autosAsset);
      panel.add(furnitures);
      panel.add(furnituresAsset);
      panel.add(cds);
      panel.add(cdsAsset);
     panel.add(furnitures);
     panel.add(furnituresAsset);
     panel.add(totalItems);
     panel.add(items);
     panel.add(totalCost);
     panel.add(cost);
     panel.add(serialNum);
     panel.add(serialNumber);
     panel.add(delete);
     panel.add(TrackAssets);
   public void actionPerformed( ActionEvent event ){
             // variables for method actionPerformed
             String output, output2;
             Object source = event.getSource();
             Integer electronicsNo, autosNo, furnituresNo, cdsNo, serialNum;
             // class responsible for showing different items
             AssetTracker tracker = new AssetTracker();
             Double cost;
             // program is instance of TestProgram creates a new file
             TestProgram program = new TestProgram();
            // if they track assets...
            if(source == TrackAssets){
              tracker.serialNum = serialNumber.getText();
              tracker.electronics = electronicsAsset.getText();
              tracker.autos = autosAsset.getText();
              tracker.furnitures = furnituresAsset.getText();
              tracker.cds = cdsAsset.getText();
         if(tracker.electronics.length() > 0){
                   //statement that might throw an exception
                   try{
                       electronicsNo = Integer.valueOf(tracker.electronics);
                       tracker.itotal += electronicsNo.intValue();
                     //find invalid number     
                     catch(java.lang.NumberFormatException e){
                       electronicsAsset.setText("Invalid Value");
                   else {
                         tracker.itotal += 0;
         if(tracker.autos.length() > 0){
                    //find invalid again
                     try{
                  autosNo = Integer.valueOf(tracker.autos);
                  tracker.itotal += autosNo.intValue();
           catch(java.lang.NumberFormatException e){
                  System.out.println("Invalid Value");
         else {
      tracker.itotal += 0;
    if(tracker.furnitures.length() > 0){
       //seek invalid numbers
     //statement that might throw an exception.
      try{
        furnituresNo = Integer.valueOf(tracker. furnitures);
        tracker.itotal +=  furnituresNo.intValue();
    // statements to be executed if a matching Java exception occurs in try.
      catch(java.lang.NumberFormatException e){
         furnituresAsset.setText("Invalid Value");
         else {
      tracker.itotal += 0;
    if(tracker.cds.length() > 0){
     //check then find invalid
      try{
        cdsNo = Integer.valueOf(tracker.cds);
        tracker.itotal += cdsNo.intValue();
      catch(java.lang.NumberFormatException e){
        cdsAsset.setText("Invalid Value");
      else {
      tracker.itotal += 0;
    // display
     serialNum = new Integer(tracker.itotal);
     output = serialNum.toString();
     this.items.setText(output);
     tracker.icost = (tracker.itotal * 300.00);
     cost = new Double(tracker.icost);
     output2 = cost.toString();
     this.cost.setText(output2);
   // electronics, autos, furnitures, cds
   // if user delete all items from assets
   if(source == delete){
     serialNumber.setText("");
     electronicsAsset.setText("");
     autosAsset.setText("");
     furnituresAsset.setText("");
     cdsAsset.setText("");
     serialNumber.setText("");
     tracker.icost = 0;
     cost = new Double(tracker.icost);
     output2 = cost.toString();
     this.cost.setText(output2);
     tracker.itotal = 0;
     serialNum = new Integer(tracker.itotal);
     output = serialNum.toString();
     this.items.setText(output);
  // main method
  public static void main( String[] args )
        TestProgram frame = new TestProgram();
          // title of JFrame
          frame.setTitle("Asset tracking program");
        // mew window created
        WindowListener l = new WindowAdapter() {
                public void windowClosing(WindowEvent e) {
                        System.exit(0);// exit
        // add window from package then show window
        frame.addWindowListener(l);
        frame.pack();
        frame.setVisible(true);

Answer 1

I don't understand the question. Are you telling us you don't understand how to use System.out.println(...);? How do you debug programs without using this method?
Usually the first program someone learns to write is something like:
public static void main(String[] args)
    System.out.println("Hello World");
after they press "current status" or if they "delete" their current itemsYou want to do some activity when the above actions occur. You must already have code in your program to do something in the above cases. So simply add the System.out.println(..) statements in the same part of code.