Thread: Need to draw something with lines and loops

import javax.swing.*;
import java.awt.Graphics;
import java.awt.Color;
 
public class MyDrawing_Start extends JFrame {
	public MyDrawing_Start() {
		add (new MyPanel());
	}
 
	public static void main (String [] args){
		MyDrawing_Start frame = new MyDrawing_Start();
		frame.setTitle("My drawing demo");
		frame.setLocationRelativeTo(null);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(500, 500);
		frame.setVisible(true);
	}
}
 
class MyPanel extends JPanel {
	protected void paintComponent(Graphics g) {
		super.paintComponent(g);
 
		// For color use the either the next 2 lines or g.setColor(Color.BLUE);
		Color myColor = new Color(0, 0, 255);
		g.setColor(Color.RED);
		for(int i= 20, j=20; i<=100; i+=5, j +=10 )
{
  g.drawLine(100,150,100,50);
 
 
 
}
 
		g.setColor(Color.BLUE);
		for(int i=100, j=100; i<=200; i++, j+= 10)
 
 
g.drawLine(i,j,50,50);
 
 
 
 
}
 
 
 
}

--- Update ---

Hi I need help to draw something with lines and loops. I have the looping down but I have never drawn anything with this. The lines go out of control and don't form anything coherent. Can someone help me draw a smiley face, 2 lines for the eyes and one for the mouth, I tried and my lines were never ending in some cases.

Originally Posted by Norm

Do you have a question about the code you posted?

The code needs formatting. Too many }s are at the start of the line. }s should be inline beneath the start of the line with the pairing {, not in the first column.
}s also should be beneath the start of the statements they belong to or at the end of the line.



Take a piece of paper, draw the design you want. Then assign the x and y values for the ends of the lines or the locations of the circles you want to draw.
When you have the full set of x and y values for the drawing, write the code using those x and y values.

Oh sorry for ambigious in my first post. But What I was wondering is how to loop it, effectively, and what are the coordinates. For example (x,x,x,x). What do each of those x's represent when i want to draw a line