How to Insert a Text in a Specified Position of JTextArea Component in Java GU

Submitted by donbermoy on Thursday, May 22, 2014 - 10:50.

This is a continuation of my other tutorials entitled JTextArea Component in Java GUI and Set Font and Color to Text of JTextArea Component in Java GUI. But in this tutorial, i will teach you how to insert a text in a specified position of JTextArea component using Java GUI. 1. First and foremost, Open JCreator or NetBeans and make a java program with a file name of jTextArea.java. When you click the link above, copy first all the code there.

    import java.awt.*;
    import javax.swing.*;
     
    public class jTextArea extends JFrame {
     
    JTextArea txtArea = new JTextArea(5,18);
     
    public jTextArea() {
     
    txtArea.setText("Encode more text to see scrollbars");
    JScrollPane scrollingArea = new JScrollPane(txtArea);
     
    JPanel content = new JPanel();
    content.setLayout(new BorderLayout());
    content.add(scrollingArea, BorderLayout.CENTER);
     
    this.setContentPane(content);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    this.pack();
    }
     
    public static void main(String[] args) {
    JFrame txtArea = new jTextArea();
    txtArea.setTitle("JTextArea Component");
    txtArea.setVisible(true);
    txtArea.setSize(250,140);
    txtArea.setLocation(300,300);
    }
    }

2. Now, insert this code after the JScrollPane scrollingArea = new JScrollPane(txtArea);. This code will insert a text in your desired position of JTextArea component.

        txtArea.insert("Sourcecodester ", 0);
        txtArea.insert(" best ", 27);

The txtArea is our variable for JTextArea component that we used the insert method here. This insert method here allows to insert a text at the specified position. Meaning insert(String text,int position) is the syntax. Here, i used the word "Sourcecodester" at the position 0. This 0 means will be placed before the start of "Encode". Take note that you can also change the word i have inserted. I also used again the insert method with the word "best" in the 27th position which means the word will be place after the word "more". Output: output

Hope this helps :) Best Regards, Engr. Lyndon R. Bermoy IT Instructor/System Developer/Android Developer/Freelance Programmer If you have some queries, feel free to contact the number or e-mail below. Mobile: 09488225971 Landline: 826-9296 E-mail:[email protected] Add and Follow me on Facebook: https://www.facebook.com/donzzsky Visit and like my page on Facebook at: https://www.facebook.com/BermzISware

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