JTextArea: Center Alignment

Question

I'm trying to make a calculator program in java, but I'm not sure how to center the text in my JTextArea. I've tried searching google and YouTube, but I don't find anything. Here is my source code:

import javax.swing.*;
import java.awt.*;

public class Sect1 extends JTextArea{
    public static final Dimension ss = Toolkit.getDefaultToolkit().getScreenSize();
    
    public Sect1(){
        this.setBounds(ss.width / 4, ss.height / 5, 100, 100);
        this.setLineWrap(true);
        this.setWrapStyleWord(true);
    }
}

Answer 1

You may wish to consider entering text in a single line with JTextField and center its contents using:

setHorizontalAlignment(JTextField.CENTER);

But if you need something like JTextArea for introducing multiple lines of text, use JTextPane or its subclass, JEditorPane which give you more customisation and control over the written text.

For centering text inside a JTextPane:

JTextPane textPane = new JTextPane();

StyledDocument documentStyle = textPane.getStyledDocument();
SimpleAttributeSet centerAttribute = new SimpleAttributeSet();
StyleConstants.setAlignment(centerAttribute, StyleConstants.ALIGN_CENTER);
documentStyle.setParagraphAttributes(0, documentStyle.getLength(), centerAttribute, false);