Frame with JTabbedPane

package project;

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;

/**
 *
 * @author stefan Klaus
 * @version 1.0
 *
 */

    public class NewClass extends JFrame implements ActionListener {

        private JFrame frame;
        private JTabbedPane tabbedPane;
        private JPanel nameTab, namePanel, instantTab, instantPanel, methodTab, methodPanel;
        private JLabel nameLabel;
        private GridLayout nameGrid, instantGrid, methodGrid;
        private JTextField nameInput, instantInput, methodInput, methodParameter;
        private JComboBox fieldModifier, fieldType, methodModifier, methodType;
        private JButton addName, addInstant, addMethod, doneButton;
        private JTextArea instantArea, methodArea;
        private InstantTabListener instantListener;
        private DoneButtonListener doneButtonListener;
        private MethodTabListener methodListener;
        private NameTabListener nameListener;
        private ArrayList<String> instantArray, methodArray, nameArray;

        public void actionPerformed(ActionEvent e) {
            instantArray = new ArrayList<String>();
            methodArray = new ArrayList<String>();


            //create the Frame
            frame = new JFrame();
            doneButton = new JButton("Done");
            frame.setSize(500, 400);
            frame.setResizable(false);
            frame.setVisible(true);
            frame.setTitle("Create a new Class");
            tabbedPane = new JTabbedPane();
            frame.add(tabbedPane, BorderLayout.CENTER);
            frame.add(doneButton, BorderLayout.SOUTH);

            //actionLitener
            doneButtonListener = new DoneButtonListener();
            doneButton.addActionListener(doneButtonListener);
        //##########################################################################################
            //creating the namePanel
            nameTab = new JPanel();
            namePanel = new JPanel();
            nameGrid = new GridLayout(0, 2);
            nameLabel = new JLabel("Name of Class: ");
            nameInput = new JTextField();
            addName = new JButton("Add");

            //Instant Listener
            nameListener = new NameTabListener();
            addName.addActionListener(nameListener);

            //add Stuff ti panel
            namePanel.add(nameLabel);
            namePanel.add(nameInput);
            namePanel.setLayout(nameGrid);

            nameTab.add(namePanel, BorderLayout.NORTH);
            nameTab.add(addName, BorderLayout.CENTER);
    //#########################################################################################################
            //creating the InstantPanel
            instantTab = new JPanel();
            instantPanel = new JPanel();
            instantGrid = new GridLayout(1, 4);
            instantInput = new JTextField();
            addInstant = new JButton("Add");
            instantArea = new JTextArea(10, 30);

            instantInput.setToolTipText("Name of Instant Variable");
            instantPanel.setLayout(instantGrid);
            instantArea.setEditable(false);

            //Array of Strings for JComboBox
            String[] modifiers = {"private", "public", "protected"};
            fieldModifier = new JComboBox(modifiers);

            String[] types = {"int", "String", "double", "boolean", "char", "byte","short","long","float"};
            fieldType = new JComboBox(types);

            //actionListener
            instantListener = new InstantTabListener();
            addInstant.addActionListener(instantListener);


            //add stuff to panel
            instantPanel.add(fieldModifier);
            instantPanel.add(fieldType);
            instantPanel.add(instantInput);
            instantPanel.add(addInstant);

            instantTab.add(instantPanel, BorderLayout.NORTH);
            instantTab.add(instantArea, BorderLayout.CENTER);

            //#########################################################################################
            //creating the method tab
            methodTab = new JPanel();
            methodPanel = new JPanel();
            methodGrid = new GridLayout(1, 5);
            methodInput = new JTextField();
            methodParameter = new JTextField();
            methodArea = new JTextArea(10, 30);
            addMethod = new JButton("Add");

            methodInput.setToolTipText("Method Name");
            methodParameter.setToolTipText("Method Parameter");
            methodPanel.setLayout(methodGrid);
            methodArea.setEditable(false);

            //Array of Strings for JComboBox
            String[] methodmodifier = {"private", "public", "none"};
            methodModifier = new JComboBox(methodmodifier);

            String[] methodtype = {"void", "String", "int"};
            methodType = new JComboBox(methodtype);

            //ActionListener
            methodListener = new MethodTabListener();
            addMethod.addActionListener(methodListener);

            //add stuff to panel
            methodPanel.add(methodModifier);
            methodPanel.add(methodType);
            methodPanel.add(methodInput);
            methodPanel.add(methodParameter);
            methodPanel.add(addMethod);

            methodTab.add(methodPanel, BorderLayout.NORTH);
            methodTab.add(methodArea, BorderLayout.CENTER);
            //#######################################################################

            //adding panel's to the tabbedPane

            tabbedPane.add("Name", nameTab);
            tabbedPane.add("Fields", instantTab);
            tabbedPane.add("Methods", methodTab);
            tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
        }
        class InstantTabListener implements ActionListener{
                String modifier = null;
                String type = null;
                String name = null;
                String array = null;
            public void actionPerformed(ActionEvent e) {

                if(fieldModifier.getSelectedIndex() == 0){
                     modifier = "-";
                }else if(fieldModifier.getSelectedIndex() == 1){
                     modifier = "+";
                }else if(fieldModifier.getSelectedIndex() == 2){
                     modifier = "#";
                }
                //////////////////////////
                if(fieldType.getSelectedIndex() == 0){
                    type = "int";
                }else if(fieldType.getSelectedIndex() == 1){
                    type = "String";
                }else if(fieldType.getSelectedIndex() == 2){
                    type = "double";
                }else if(fieldType.getSelectedIndex() == 3){
                    type = "boolean";
                }else if(fieldType.getSelectedIndex() == 4){
                    type = "char";
                }else if(fieldType.getSelectedIndex() == 5){
                    type = "byte";
                }else if(fieldType.getSelectedIndex() == 6){
                    type = "short";
                }else if(fieldType.getSelectedIndex() == 7){
                    type = "long";
                }else if(fieldType.getSelectedIndex() == 8){
                    type = "float";
                }
                /////////////////////

                name = instantInput.getText();
                array = modifier+" "+type+" " +name;
                instantArray.add(array);
                instantArea.append(array+"\n ");
                instantInput.setText("");

            }
        }
        //#############################################################################################
        class MethodTabListener implements ActionListener{
                String array = null;
                String type = null;
                String modifier = null;
                String name = null;
                String parameter = null;
            public void actionPerformed(ActionEvent arg0) {
                if(methodModifier.getSelectedIndex() == 0){
                    modifier = "private";
                }else if(methodModifier.getSelectedIndex() == 1){
                    modifier = "public";
                }else if(methodModifier.getSelectedIndex() == 2){
                    modifier = " ";
                }
                /////////////////////
                if(methodType.getSelectedIndex() == 0){
                    type = "void";
                }
                else if(methodType.getSelectedIndex() == 1){
                    type = "String";
                }
                else if(methodType.getSelectedIndex() == 2){
                    type = "int";
                }
                ///////////////

                name = methodInput.getText();
                parameter = methodParameter.getText();
                array = modifier+" "+type+" "+name+"( "+parameter+" )";
                methodArray.add(array);
                methodArea.append(array+"\n");
                methodInput.setText("");
                methodParameter.setText("");

            }

        }
        //#################################################################################################
        class NameTabListener implements ActionListener{
                String name = null;
            public void actionPerformed(ActionEvent arg0) {

                name = nameInput.getText();
                nameArray = new ArrayList<String>();
                nameArray.add(name);
                nameInput.setText("Name Set!");
            }

        }
        //#################################################################################################
        class DoneButtonListener implements ActionListener{

            public void actionPerformed(ActionEvent arg0) {
                System.out.println("Name is: "+nameArray );
                System.out.println("Instants are: "+instantArray);
                System.out.println("Methods are: "+methodArray);
            }

        }

    }