Main.java Source code

Java tutorial

Introduction

Here is the source code for Main.java

Source

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

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

public class Main {

    public static void main(String[] args) {
        JFrame mainFrame = new JFrame();
        mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        MyCanvas sadraGraphics = new MyCanvas();
        sadraGraphics.setPreferredSize((new Dimension(640, 480)));
        mainFrame.getContentPane().add(sadraGraphics);
        mainFrame.pack();
        mainFrame.setVisible(true);
    }
}

class MyCanvas extends JPanel {
    int x1 = 0;
    int y1 = 50;
    int x2 = 0;
    int y2 = 200;

    public MyCanvas() {
        Timer timer = new Timer(30, new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                x1 += 2;
                x2 += 2;
                repaint();
            }
        });
        timer.start();
    }

    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.drawLine(x1, y1, x2, y2);

    }
}