How to Program a JTextArea

Output:

Code:

/**

 * File: programJTextArea.java

 * Tiltle: How to Program a JTextArea

 * Author: http://java-code-complete.blogspot.com

 */



//Java Core Package

import javax.swing.*;

//Java Extension Package

import java.awt.*;



public class programJTextArea extends JFrame {

	

	//Initializing JTextArea

	private JTextArea txtArea;



	//Setting up GUI

    public programJTextArea() {

    	

    	//Setting up the Title of the Window

    	super("How to Program a JTextArea");



    	//Set Size of the Window (WIDTH, LENGTH)

    	setSize(290,357);



    	//Exit Property of the Window

    	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    	   	

    	//Constructing JTextArea

    	txtArea = new JTextArea();

    	

    	//Constructing a JScrollPane for JTextArea's Horizontal and Vertical Scroll Bar

    	JScrollPane scroller = new JScrollPane(txtArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

    	

    	//Setting up the container ready for the components to be added.

    	Container pane = getContentPane();

    	setContentPane(pane);



    	//Setting up the container layout

    	GridLayout grid = new GridLayout(1,1);

    	pane.setLayout(grid);



		//Adding the JScrollPane to the Container with JTextArea on it

		pane.add(scroller);

		

    	/**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) {

    	programJTextArea pjtf = new programJTextArea();

	}

}

Important Part of the Program:

	//Constructing JTextArea

    	JTextArea txtArea = new JTextArea();

    	

    	//Constructing a JScrollPane for JTextArea's Horizontal and Vertical Scroll Bar

    	JScrollPane scroller = new JScrollPane(txtArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);