Delete the first 10 characters from JTextArea in Java

Let’s say the following is our JTextArea with default text −

JTextArea textArea = new JTextArea("The text added here is just for demo. "
   + "\nThis demonstrates the usage of JTextArea in Java. In this example we have"
   + "deleted some text.");

Now to remove the first 10 characters, use replaceRange() method and set null from one end to another i.e. deleting characters in a range. The replaceRaneg() method Replaces text from the indicated start to end position with the new text specified i.e.e here null will replace the first 10 characters −

int start = 0;
int end = 10;
textArea.replaceRange(null, start, end);

The following is an example to delete the first 10 characters from 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. In this example we have" + "deleted some text.");
      int start = 0;
      int end = 10;
      textArea.replaceRange(null, start, end);
      frame.add(textArea);
      frame.setSize(550,300);
      frame.setLayout(new GridLayout(2, 2));
      frame.setVisible(true);
   }
   public static void main(String args[]) {
      new SwingDemo ();
   }
}

The output is as follows. We have deleted first 10 characters here −

Output