Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main {
    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(new TestPane());
        frame.pack();
        frame.setVisible(true);
    }
}

class TestPane extends JPanel {
    public TestPane() {
        setBackground(Color.BLACK);
    }

    @Override
    public Dimension getPreferredSize() {
        return new Dimension(200, 200);
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g.create();
        g2d.setColor(Color.RED);
        g2d.drawLine(0, getHeight() / 2, getWidth(), getHeight() / 2);
        g2d.drawLine(getWidth() / 2, 0, getWidth() / 2, getHeight());
        render(g);
        g2d.dispose();
    }

    public void render(Graphics g) {
        Graphics2D g2d = (Graphics2D) g;
        g2d.setColor(Color.WHITE);
        Font font = new Font("Verdana", Font.PLAIN, 20);
        g2d.setFont(font);
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        FontMetrics fm = g2d.getFontMetrics();

        String option = "This is a test";

        int x = (getWidth() - fm.stringWidth(option)) / 2;
        int y = ((getHeight() - fm.getHeight()) / 2);
        g2d.drawString(option, x, y + fm.getAscent());
        g2d.drawRect((int) x - 20, (int) y - 10, (int) fm.stringWidth(option) + 40, (int) fm.getHeight() + 20);
    }
}