GUI Help Needed

Question

*////The declaration*
Entry [] entries  - array of entries
Int eno      - number of Entrys in entries
Int MAXE = 100; maximum number of entrys in entries
Int current ? index in entries of entry *///////I have few Jtextfields in a GUI where when I click ?new? Jbutton it would put the Jtextfields in entries[eno] can I know how to write this code .*
Public void actionPerformed (ActionEvent E) {
If (e.getSource==new) ;
Sorry not sure how to write plz help
}

Answer 1

What is an Entry? What is an Int?
I have few Jtextfields in a GUI where when I click ?new? Jbutton it would put the Jtextfields in entries[eno] can I know how to write this code .If you want to put the JTextFields in entries[], then entries has to be of type JTextField[]. Or do you want to put the strings that were entered into the JTextFields into entries[]?
Here is my attempt:
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
class MyWindow extends JFrame implements ActionListener
  private ArrayList<JTextField> textBoxes;
  private ArrayList<String> entries;
  public MyWindow()
    //Initialize frame:
    super("Testing");
    setBounds(20, 100, 500, 500);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    textBoxes = new ArrayList<JTextField>();
    entries = new ArrayList<String>();
    //Create textboxes:
    textBoxes.add(new JTextField("", 20));
    textBoxes.add(new JTextField("", 30));
    //Create button:
    JButton newButton = new JButton("new");
    newButton.addActionListener(this);
    //'this'-->look in this class for actionPerformed() method
    //Create panel:
    JPanel panel = new JPanel();
    for(JTextField textBox: textBoxes)
      panel.add(textBox);
    panel.add(newButton);
    //Add panel to window:
    Container cpane = getContentPane();
    cpane.add(panel);
  public void actionPerformed(ActionEvent ev)
    for(JTextField textBox: textBoxes)
      entries.add(textBox.getText());
    for(String str: entries)
      System.out.println(str);
public class WindowTest
  public static void createAndShowGui()
    MyWindow win = new MyWindow();
    win.setVisible(true);
  public static void main(String args[])
    //The proper way to launch a java gui:
    Runnable runner = new Runnable()
      public void run()
        createAndShowGui();
    SwingUtilities.invokeLater(runner);
}Or maybe you don't know how many JTextFields there are in the window? Is the user adding them dynamically?
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
class MyWindow extends JFrame implements ActionListener
  private ArrayList<JTextField> entries;
  JPanel panel;
  public MyWindow()
    //Initialize frame:
    super("Testing");
    setBounds(20, 100, 500, 500);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    entries = new ArrayList<JTextField>();
    //Create textboxes:
    //Create button:
    JButton newButton = new JButton("new");
    newButton.addActionListener(this);
    //'this'-->look in this class for actionPerformed() method
    //Create panel:
    panel = new JPanel();
    panel.add(new JTextField("", 20));
    panel.add(new JTextField("", 20));
    panel.add(newButton);
    //Add panel to window:
    Container cpane = getContentPane();
    cpane.add(panel);
  public void actionPerformed(ActionEvent ev)
    int count = panel.getComponentCount();
    System.out.println(count);
    Component comp = null;
    for(int i=0; i<count; ++i)
      comp = panel.getComponent(i);
      if(comp.getClass() == JTextField.class)
        entries.add((JTextField)comp);
    for(JTextField tf: entries)
      System.out.println(tf.getText());
public class WindowTest
  public static void createAndShowGui()
    MyWindow win = new MyWindow();
    win.setVisible(true);
  public static void main(String args[])
    Runnable runner = new Runnable()
      public void run()
        createAndShowGui();
    SwingUtilities.invokeLater(runner);
}