Resizing or Changing JTextField Size using simple Java Code

Program Description:

This program is just a simple java code to illustrate on how to re-size the JTextField in a simple way using simple code. Similar to JPanel, the way on how to change JTextField size is through the method setPreferredSize(); and the class Dimension.

Output:

Code:

/**
 * File: resizeJTextField.java
 * Tiltle: Simple way in Resizing JTextField
 * Author: http://java-program-sample.blogspot.com/
 */

//Java Core Package
import javax.swing.*;
//Java Extension Package
import java.awt.*;

public class resizeJTextField extends JFrame {
 
 //Constructing JTextFields
 JTextField size1 = new JTextField("RESIZING JTEXTFIELD");
 JTextField size2 = new JTextField("RESIZING JTEXTFIELD");
 JTextField size3 = new JTextField("RESIZING JTEXTFIELD");
 JTextField size4 = new JTextField("RESIZING JTEXTFIELD");

 //Setting up GUI
    public resizeJTextField() {
     
     //Setting up the Title of the Window
     super("Simple way in Resizing JTextField");

     //Set Size of the Window (WIDTH, HEIGHT)
     setSize(500,435);

     //Exit Property of the Window
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

     //Setting up the container ready for the components to be added.
     Container pane = getContentPane();
     setContentPane(pane);
     
     //Setting up the layout of the container
     pane.setLayout(new FlowLayout(FlowLayout.CENTER));
     
     //Setting the JTextField text to center
     size1.setHorizontalAlignment(SwingConstants.CENTER);
     size2.setHorizontalAlignment(SwingConstants.CENTER);
     size3.setHorizontalAlignment(SwingConstants.CENTER);
     size4.setHorizontalAlignment(SwingConstants.CENTER);
     
     //Spicify the size of the JTextField using the method setPreferredSize() and the class Dimension
  size1.setPreferredSize(new Dimension(450,150));
  size2.setPreferredSize(new Dimension(450,100));
  size3.setPreferredSize(new Dimension(450,75));
  size4.setPreferredSize(new Dimension(450,50));
  
  //add the JTextFields in the container
  pane.add(size1);
  pane.add(size2);
  pane.add(size3);
  pane.add(size4);
  
     /**Set all the Components Visible.
      * If it is set to "false", the components in the container will not be visible.
      */
     setVisible(true);
    }
    
 //Main Method
    public static void main (String[] args) {
     resizeJTextField pjtf = new resizeJTextField();
 }
}

Important Part of the Program:

//Spicify the size of the JTextField using the method setPreferredSize() and the class Dimension
  size1.setPreferredSize(new Dimension(450,150));
  size2.setPreferredSize(new Dimension(450,100));
  size3.setPreferredSize(new Dimension(450,75));
  size4.setPreferredSize(new Dimension(450,50));