how to create a JFrame in java
import javax.swing.JFrame;
import java.awt.Rectangle;
import javax.swing.JComponent;
import java.awt.Graphics2D;
import java.awt.Graphics;
import java.awt.Color;
public class ChrismasTree {
public static void main(String[] args) {
JFrame window = new JFrame();
window.setTitle("Christmas Tree");
window.setSize(800, 1000);
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.setVisible(true);
DrawingComponent DC = new DrawingComponent();
window.add(DC);
}
}
class DrawingComponent extends JComponent{
public void paint(Graphics graph0){
Graphics2D graph = (Graphics2D) graph0;
graph.setColor(Color.LIGHT_GRAY);
graph.draw(new Rectangle(0, 710, 70, 60));
graph.setColor(Color.BLUE);
graph.draw(new Rectangle(70, 600, 50, 100));
graph.setColor(Color.BLACK);
}
}