i have a code to create textbox at runtime in java its stored in database so how to retrive those data with already stored values

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C#

import java.awt.Dimension;
    import java.awt.GridBagConstraints;
    import java.awt.GridBagLayout;
    import java.awt.Insets;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.util.ArrayList;
    import java.util.List;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JTextField;
    import javax.swing.border.LineBorder;

public class stext { 
        static JPanel panel = new JPanel();
        static Integer indexer = 1;
        static List<jlabel> listOfLabels = new ArrayList<jlabel>();
        static List<jtextfield> listOfTextFields = new ArrayList<jtextfield>();

        public static void main(String[] args)
        {       
            
            JFrame frame = new JFrame();
            frame.setLayout(new GridBagLayout());
            frame.setPreferredSize(new Dimension(990, 990));
            frame.setTitle("My Example");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

          
            GridBagConstraints frameConstraints = new GridBagConstraints();

            
            JButton addButton = new JButton("Add");
            addButton.addActionListener(new ButtonListener());

           
            frameConstraints.gridx = 0;
            frameConstraints.gridy = 0;
            frame.add(addButton, frameConstraints);

           
            panel.setPreferredSize(new Dimension(600, 600));
            panel.setLayout(new GridBagLayout());
            panel.setBorder(LineBorder.createBlackLineBorder());

           
            frameConstraints.gridx = 0;
            frameConstraints.gridy = 1;
            frameConstraints.weighty = 1;
            frame.add(panel, frameConstraints); 

                        frame.pack();

            
            frame.setVisible(true);
        }

        static class ButtonListener implements ActionListener
        {
            @Override
            public void actionPerformed(ActionEvent arg0) 
            {       
              panel.removeAll();

               
                JTextField jTextField = new JTextField();
                jTextField.setSize(100, 200);
                listOfTextFields.add(jTextField);
                listOfLabels.add(new JLabel("Name" + indexer));

                
                GridBagConstraints textFieldConstraints = new GridBagConstraints();
                GridBagConstraints labelConstraints = new GridBagConstraints();

               
                for(int i = 0; i < indexer; i++)
                {   textFieldConstraints.gridx = 1;
                    textFieldConstraints.fill = GridBagConstraints.HORIZONTAL;
                    textFieldConstraints.weightx = 0.5;
                    textFieldConstraints.insets = new Insets(10, 10, 10, 10);
                    textFieldConstraints.gridy = i;

                    
                    labelConstraints.gridx = 0;
                    labelConstraints.gridy = i;
                    labelConstraints.insets = new Insets(10, 10, 10, 10);

                    panel.add(listOfLabels.get(i), labelConstraints);
                    panel.add(listOfTextFields.get(i), textFieldConstraints);
                }

                GridBagConstraints c = new GridBagConstraints();
                c.gridx = 0;
                c.gridy = indexer;
                c.weighty = 1;
                panel.add(new JLabel(), c);              
                indexer++;
                panel.updateUI();
            }
        }
    
}

Posted 27-Oct-14 23:41pm

Member 11185927

Updated 28-Oct-14 0:37am

Suraj Sahoo | Coding Passion

v2

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TorstenH. · Answer 1 · 2014-10-28T21:54:00

Where is the database connection?

First things first:
You need to do proper coding:
GET AN IDE!
I can't stress that enough. This is 21. century, not 60s.
Eclipse is free and common used. there is no need to code in some notepad.

https://www.eclipse.org/downloads/[^]

Now let's take a look at the coding:

Java

public class Stext { // classes/ objects ALWAYS starts with capital letter

// get rid of "static" (see main why possible). Instead use "private" to limit access to your class only
        private JPanel panel = new JPanel();
        private Integer indexer = 1; // Eclipse will tell you that this is rubbish false reference: can not assign a int to Integer
        private List<jlabel> listOfLabels = new ArrayList<jlabel>(); // Eclipse will tell you that this is  rubbish false reference "jlabel"
        private List<jtextfield> listOfTextFields = new ArrayList<jtextfield>(); // Eclipse will tell you that this is  rubbish false reference "jtextfield"


        public Stext() // constructor
        {
           this.init();
        { 

        public static void main(String[] args)
        {
             Stext stext = new Stext(); // break out of static context - no static needed any more
        }

        private void init()
        {
            // code from function "main" goes here
        {

        private class ButtonListener implements ActionListener // no "static" either!
        {
            // fancy coding
        }
</jtextfield></jtextfield></jlabel></jlabel>

Please read here for understanding OOP:
http://docs.oracle.com/javase/tutorial/java/javaOO/index.html[^]

Now to your problem:

You have a List<textfield></textfield> in that GUI.

The JTextField is holding the entered text. So to get & work with that String, you should consider to create a variable for each value. As given in your coding a List<string></string> could be fine. Please also consider to use a HashMap instead of List as that gives you key-values for the String values.