import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Line2D;
public class Main extends javax.swing.JFrame {
public Main() {
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setSize(600, 600);
}
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
Line2D lin = new Line2D.Float(100, 100, 250, 260);
g2.draw(lin);
}
public static void main(String args[]) {
new Main().setVisible(true);
}
}