Saving to a file using multiple JBUTTONS in JAVA

I am having trouble SAVING to a File and READING from a File. I have 6 TextFields and 5 JButtons. I have a save button in 2 of the panels. I would like to understand how to save to another file using JBUTTONS.

Any Examples with comments would be nice. I am mostly a visual learner. THANK YOU

In my JOptionPane.showMessage I get this.... When I do the FileWriter and PrintWriter for my 5th Button which is the Enter/OK button.

javax.swing.JTextField[,120,60,200x20,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@73e9743a,flags=296,maximumSize=,minimumSize=,preferredSize=,caretColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],disabledTextColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],editable=true,margin=javax.swing.plaf.InsetsUIResource[top=0,left=0,bottom=0,right=0],selectedTextColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],selectionColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],columns=50,columnWidth=0,command=,horizontalAlignment=LEADING]

Here is my Code

package courseProject;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedWriter;
import java.io.FileWriter;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextField;

public class FlooringStore {

//global
JPanel P, P1, P2, P3;
JButton B, B1, B2, B3, B4;
JLabel JL;
JTabbedPane TP;
JTextField JT = new JTextField(50);

String woodType, carpetType;
double woodArea, carpetArea;
double wArea, cArea, totalWood, totalCarpet;


public FlooringStore(){

    JTabbedPane TP = new JTabbedPane();
    JFrame JF = new JFrame();
    JF.setVisible(true); //made true so we can see the frame
    JF.setTitle("FLOORING STORE");
    JF.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JF.setSize(400,300); //set size Width/Height
    JF.add(TP); //ands the TabbedPanel to frame

    P = new JPanel();
    P.setLayout(null);
    JL = new JLabel("WELCOME TO THE FLOORING STORE");
    JL.setSize(300,100);
    JL.setLocation(85,50);
    P.add(JL);
    TP.add(P, "HOME PAGE"); //panel1 tab1 name

    P1 = new JPanel();
    P1.setLayout(null);
    B = new JButton("CUSTOMER");
    B.setSize(150,150);
    B.setLocation(20,20);
    B1 = new JButton("EMPLOYEE");
    B1.setSize(150,150);
    B1.setLocation(200,20);
    P1.add(B);
    P1.add(B1);
    TP.add(P1, "ID"); //panel 2 tab2 

    class customerB implements ActionListener{ 
        public void actionPerformed (ActionEvent e){
            JFrame JF2 = new JFrame();
            JF2.setVisible(true);
            JF2.setTitle("CUSTOMER");
            JF2.setSize(400,300);


            JPanel JP = new JPanel();
            JP.setLayout(null);
            JF2.add(JP);

            JLabel L2 = new JLabel("CUSTOMER NAME: ");
            L2.setSize(300,100);
            L2.setLocation(10,20);
            JP.add(L2);

            JTextField JT = new JTextField(50);
            JT.setSize(200,20);
            JT.setLocation(120, 60);
            JP.add(JT);

            JButton B5 = new JButton("ENTER");
            B5.setSize(100,50);
            B5.setLocation(100,100);
            JP.add(B5);

    class okB implements ActionListener{
        public void actionPerformed (ActionEvent e){
            try{
                JTextField JT = new JTextField(50);
                JT.setSize(200,20);
                JT.setLocation(120, 60);
                JP.add(JT);

                String name = JT.getText();
                FileWriter stream = new FileWriter("customer.txt", true);
                BufferedWriter out = new BufferedWriter(stream);
                out.write(name);
                out.close();
                }/*end try*/ catch (Exception ex){  
                    System.out.println("ERROR!! %s");
            }//end catch
        }//end actionPerformed
    }//end end action z

    B5.addActionListener(new okB());

        }// end actionPerformed
    }//end end action 
    B.addActionListener(new customerB());

    class employeeB implements ActionListener{ 
        public void actionPerformed (ActionEvent e){
            JFrame JF3 = new JFrame();
            JF3.setVisible(true);
            JF3.setTitle("EMPLOYEE");
            JF3.setSize(400,300);

            JPanel JP = new JPanel();
            JP.setLayout(null);
            JF3.add(JP);

            JLabel L2 = new JLabel("EMPLOYEE NAME: ");
            L2.setSize(300,100);
            L2.setLocation(10,20);
            JP.add(L2);

            JTextField JT1 = new JTextField(50); //EmployeeName
            JT1.setSize(200,20);
            JT1.setLocation(120, 60);
            JP.add(JT1);

            JLabel L3 = new JLabel("EMPLOYEE ID: ");
            L3.setSize(300,100);
            L3.setLocation(10,60);
            JP.add(L3);

            JTextField JT2 = new JTextField(30); //EmployeeID
            JT2.setSize(100,20);
            JT2.setLocation(100, 100);
            JP.add(JT2);
        }// end actionPerformed
    }//end end action 
    B1.addActionListener(new employeeB());


    P2 = new JPanel();
    P2.setLayout(null);
    B2 = new JButton("WOOD");
    B2.setSize(150,150);
    B2.setLocation(20,20);
    B3 = new JButton("CARPET");
    B3.setSize(150,150);
    B3.setLocation(200,20);
    P2.add(B2);
    P2.add(B3);
    TP.add(P2, "FLOORING"); //panel 3 tab3 

    class woodB implements ActionListener{ 
        public void actionPerformed (ActionEvent e){

            JFrame JF4 = new JFrame();
            JF4.setVisible(true);
            JF4.setTitle("WOOD");
            JF4.setSize(400,300);

            JPanel JP = new JPanel();
            JP.setLayout(null);
            JF4.add(JP);

            JLabel L4 = new JLabel("TYPE OF WOOD: ");
            L4.setSize(300,100);
            L4.setLocation(10,20);
            JP.add(L4);

            JTextField JT3 = new JTextField(50); //wood Type
            JT3.setSize(250,20);
            JT3.setLocation(120, 60);
            JP.add(JT3);

            JLabel L5 = new JLabel("AREA OF THE ROOM: ");
            L5.setSize(300,100);
            L5.setLocation(10,80);
            JP.add(L5);

            JTextField JT4 = new JTextField(50); //Area
            JT4.setSize(100,20);
            JT4.setLocation(130, 120);
            JP.add(JT4);


        }// end actionPerformed
    }//end end action 
    B2.addActionListener(new woodB());

    class carpetB implements ActionListener{ 
        public void actionPerformed (ActionEvent e){
            JFrame JF4 = new JFrame();
            JF4.setVisible(true);
            JF4.setTitle("CARPET");
            JF4.setSize(400,300);

            JPanel JP = new JPanel();
            JP.setLayout(null);
            JF4.add(JP);

            JLabel L5 = new JLabel("COLOR OF CARPET: ");
            L5.setSize(300,100);
            L5.setLocation(10,20);
            JP.add(L5);

            JTextField JT4 = new JTextField(50); //carpet color
            JT4.setSize(250,20);
            JT4.setLocation(130, 60);
            JP.add(JT4);

            JLabel L6 = new JLabel("AREA OF THE ROOM: ");
            L6.setSize(300,100);
            L6.setLocation(10,80);
            JP.add(L6);

            JTextField JT5 = new JTextField(50); //Area
            JT5.setSize(100,20);
            JT5.setLocation(130, 120);
            JP.add(JT5);
        }// end actionPerformed
    }//end end action 
    B3.addActionListener(new carpetB());

    P3 = new JPanel();
    P3.setLayout(null);
    B4 = new JButton("TOTAL");
    B4.setSize(150,150);
    B4.setLocation(100,20);
    P3.add(B4);
    TP.add(P3, "CHECKOUT"); //panel 3 tab4

    class totalB implements ActionListener{ 
        public void actionPerformed (ActionEvent e){

            JOptionPane.showMessageDialog(null,"Total Amount for "+JT+ "\nWood Type: "+woodType+"\n Carpet Type: "
            +carpetType+"\n\n Total Amount: "+totalWood+" "+totalCarpet);

        }// end actionPerformed
    }//end end action 
    B4.addActionListener(new totalB());

    }//end constructor


public static void main(String[] args) {

    new FlooringStore();
}

}