Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Color;

import javax.swing.JTextArea;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultHighlighter;
import javax.swing.text.Document;
import javax.swing.text.Highlighter;
import javax.swing.text.JTextComponent;

public class Main {
    public static void main(String[] argv) throws Exception {
        JTextArea textComp = new JTextArea();

        Highlighter hilite = textComp.getHighlighter();
        Highlighter.Highlight[] hilites = hilite.getHighlights();

        for (int i = 0; i < hilites.length; i++) {
            if (hilites[i].getPainter() instanceof MyHighlightPainter) {
                hilite.removeHighlight(hilites[i]);
            }
        }
        highlight(textComp);
    }

    public static void highlight(JTextComponent textComp) {
        try {
            Highlighter hilite = textComp.getHighlighter();
            Document doc = textComp.getDocument();
            hilite.addHighlight(3, 5, new MyHighlightPainter(Color.red));
        } catch (BadLocationException e) {
            e.printStackTrace();
        }
    }
}

class MyHighlightPainter extends DefaultHighlighter.DefaultHighlightPainter {
    public MyHighlightPainter(Color color) {
        super(color);
    }
}