How to Program a JTextArea

Output:

Code:

/**
 * File: programJTextArea.java
 * Tiltle: How to Program a JTextArea
 * Author: http://java-program-sample.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);

Posted in: JScrollPane,JTextArea