Question

Please design a Java GUI application with two JTextField for user to enter the first name and last name. Add two JButtons with action events so when user click on one button to generate a full name message from the user input and put it in a third JTextField which is not editable; and click on the other button to clear all three JTextField boxes. Please run the attached nameFrame.class file (Note: because there is an actionhandler inner class in this program, another class file nameFrame$actionhandler.class was generated when you compile the .java file, you need both files in the same directory in order to run) to see the sample output. You need to design your program with a similar look and have your name as the author in a JLabel.

nameFrame.class:

import java.awt.Color;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;



public class nameFrame
  extends JFrame
{
  private JTextField txtFirstName;
  private JTextField txtLastName;
  private JTextField txtFullName;
  private JLabel lblFirstName;
  private JLabel lblLastName;
  private JLabel lblFullName;
  private JButton btnName;
  private JButton btnClear;
  private JLabel lblAuthor;
  
  public nameFrame()
  {
    super("Enter names");
    setLayout(new FlowLayout());
    
    lblFirstName = new JLabel("First Name:");
    add(lblFirstName);
    txtFirstName = new JTextField(10);
    add(txtFirstName);
    
    lblLastName = new JLabel("Last Name:");
    add(lblLastName);
    txtLastName = new JTextField(10);
    add(txtLastName);
    
    txtFullName = new JTextField(20);
    add(txtFullName);
    txtFullName.setBackground(Color.WHITE);
    txtFullName.setEditable(false);
    


    btnName = new JButton("Name");
    add(btnName);
    btnClear = new JButton("Clear");
    add(btnClear);
    
    lblAuthor = new JLabel("Author: James Gao");
    add(lblAuthor);
    lblAuthor.setBackground(Color.gray);
    
    nameFrame.actionhandler localActionhandler = new nameFrame.actionhandler(this);
    btnName.addActionListener(localActionhandler);
    btnClear.addActionListener(localActionhandler);
  }
  














  public static void main(String[] paramArrayOfString)
  {
    nameFrame localNameFrame = new nameFrame();
    localNameFrame.setDefaultCloseOperation(3);
    localNameFrame.setSize(400, 150);
    localNameFrame.setVisible(true);
  }
}

Answer 1

//Java Code

import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;



public class nameFrame
        extends JFrame
{
    private JTextField txtFirstName;
    private JTextField txtLastName;
    private JTextField txtFullName;
    private JLabel lblFirstName;
    private JLabel lblLastName;
    private JLabel lblFullName;
    private JButton btnName;
    private JButton btnClear;
    private JLabel lblAuthor;

    public nameFrame()
    {
        super("Enter names");
        setLayout(new FlowLayout());

        lblFirstName = new JLabel("First Name:");
        add(lblFirstName);
        txtFirstName = new JTextField(10);
        add(txtFirstName);

        lblLastName = new JLabel("Last Name:");
        add(lblLastName);
        txtLastName = new JTextField(10);
        add(txtLastName);

        txtFullName = new JTextField(20);
        add(txtFullName);
        txtFullName.setBackground(Color.WHITE);
        txtFullName.setEditable(false);



        btnName = new JButton("Name");
        add(btnName);
        btnClear = new JButton("Clear");
        add(btnClear);

        lblAuthor = new JLabel("Author: James Gao");
        add(lblAuthor);
        lblAuthor.setBackground(Color.gray);

        nameFrame.actionhandler localActionhandler = new nameFrame.actionhandler(this);
        btnName.addActionListener(localActionhandler);
        btnClear.addActionListener(localActionhandler);
    }


    public static void main(String[] paramArrayOfString)
    {
        nameFrame localNameFrame = new nameFrame();
        localNameFrame.setDefaultCloseOperation(3);
        localNameFrame.setSize(400, 150);
        localNameFrame.setVisible(true);
    }

    private class actionhandler implements ActionListener {
        public actionhandler(nameFrame nameFrame) {
            
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            if(e.getSource().equals(btnClear))
            {
                txtFirstName.setText("");
                txtLastName.setText("");
                txtFullName.setText("");
            }
            if(e.getSource().equals(btnName))
            {
                String fname = txtFirstName.getText();
                String lname = txtLastName.getText();
                txtFullName.setText(fname+" "+lname);
            }
        }
    }
}

//Output

0 X Enter names First Name: John - Last Name: Wick Name John Wick Clear Author: James Gao

//If you need any help regarding this solution ...........please leave a comment...... thanks