Editing Swing (Java) (section)

===Text Field===

Text fields enable users to input text or data into your application. Creating a text field in Swing is straightforward – instantiate a JTextField object and add it to a container.
<syntaxhighlight lang="java">
import javax.swing.*;

public class TextFieldExample {
   public static void main(String[] args) {
       // Create a JFrame
       JFrame frame = new JFrame("Text Field Example");

       // Create a JTextField
       JTextField textField = new JTextField(20);

       // Add the text field to the JFrame
       frame.add(textField);

       // Set the size of the JFrame and make it visible
       frame.setSize(300, 200);
       frame.setVisible(true);
   }
}
</syntaxhighlight>

Enhancing functionality in text fields improves user interaction. By attaching DocumentListener interfaces, you can dynamically monitor changes in the text content, enabling real-time validation, formatting, or auto-completion of input data.

Validating text field input is crucial for ensuring data integrity and preventing errors. Swing provides multiple validation techniques, including regular expressions, input masks, or custom validation logic. By implementing InputVerifier interfaces, you can define specific validation rules and offer immediate feedback to users when input is invalid.<ref>https://geeksprogramming.com/java-swing-tutorial-for-beginners/ The Event Dispatch Thread</ref>