Swing Examples - Creating Text Field

Following example showcases how to create and use a text field in a Java Swing application.

We are using the following APIs.

• JTextField − To create a text field.

• JTextField.getText() − To get the text entered.

Example - Creating a Text Field in Swing Application

SwingTester.java

package com.tutorialspoint;

import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

public class SwingTester {
   private JFrame mainFrame;
   private JLabel headerLabel;
   private JLabel statusLabel;
   private JPanel controlPanel;

   public SwingTester(){
      prepareGUI();
   }
   public static void main(String[] args){
      SwingTester  swingControlDemo = new SwingTester();      
      swingControlDemo.showPasswordFieldDemo();
   }
   private void prepareGUI(){
      mainFrame = new JFrame("Java Swing Examples");
      mainFrame.setSize(492,400);
      mainFrame.setLayout(new GridLayout(3, 1));
      
      mainFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }        
      });    
      headerLabel = new JLabel("", JLabel.CENTER);        
      statusLabel = new JLabel("",JLabel.CENTER);    
      statusLabel.setSize(350,100);

      controlPanel = new JPanel();
      controlPanel.setLayout(new FlowLayout());

      mainFrame.add(headerLabel);
      mainFrame.add(controlPanel);
      mainFrame.add(statusLabel);
      mainFrame.setVisible(true);  
   }
   private void showPasswordFieldDemo(){
      headerLabel.setText("Control in action: JTextField"); 

      JLabel namelabel= new JLabel("User ID: ", JLabel.RIGHT);
      JLabel passwordLabel = new JLabel("Password: ", JLabel.CENTER);
      final JTextField userText = new JTextField(6);
      final JPasswordField passwordText = new JPasswordField(6);      
      passwordText.setEchoChar('*');
	  
      JButton loginButton = new JButton("Login");
      loginButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {     
            String data = "Username " + userText.getText();
            data += ", Password: " + new String(passwordText.getPassword()); 
            statusLabel.setText(data);        
         }
      }); 
      controlPanel.add(namelabel);
      controlPanel.add(userText);
      controlPanel.add(passwordLabel);       
      controlPanel.add(passwordText);
      controlPanel.add(loginButton);
      mainFrame.setVisible(true);  
   }
}

Output

Compile and Run the program and verify the output −