How can I append text to JTextArea in Java?

To append text to JTextArea, use the component’s append() method. Let’sa say the following is our text in the JTextArea -

JTextArea textArea = new JTextArea("The text added here is just for demo. "+ "\nThis demonstrates the usage of JTextArea in Java. ");

Now, append text to the same textArea -

textArea.append("In this example we have deleted some text from the beginning."+ "\nWe have also appended some text.");

The following is an example to append text to JTextArea -

Example

package my; import java.awt.GridLayout; import javax.swing.*; public class SwingDemo {    SwingDemo() {       JFrame frame = new JFrame("Demo");       JTextArea textArea = new JTextArea("The text added here is just for demo. "+ "\nThis demonstrates the usage of JTextArea in Java. ");       int begn = 0;       int end = 10;       textArea.replaceRange(null, begn, end);       textArea.append("In this example we have deleted some text from the beginning."+ "\nWe have also appended some text.");       frame.add(textArea);       frame.setSize(550,300);       frame.setLayout(new GridLayout(2, 2));       frame.setVisible(true);    }    public static void main(String args[]) {       new SwingDemo       ();    } }

Output