MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.awt.Container;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;

import javax.swing.JComponent;
import javax.swing.JFrame;

public class MainClass {
    public static void main(String[] args) {
        JFrame jf = new JFrame("Demo");
        Container cp = jf.getContentPane();
        MyCanvas tl = new MyCanvas();
        cp.add(tl);
        jf.setSize(300, 200);
        jf.setVisible(true);
    }
}

class MyCanvas extends JComponent {

    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;

        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        g2.setFont(new Font("Serif", Font.PLAIN, 48));

        FontRenderContext frc = g2.getFontRenderContext();
        String s = "www.java2s.com";
        Rectangle2D bounds = g2.getFont().getStringBounds(s, frc);
        float width = (float) bounds.getWidth();
        int centerX = 100;
        int baselineY = 70;
        g2.drawString(s, centerX - width / 2, baselineY);
    }
}