import javax.swing.*;

javac MyPackage/Main.java

java MyPackage.Main

javadoc -private MyPackage/Main.java

package SwingDemo;

import java.awt.SystemColor;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.Date;

import javax.swing.SwingUtilities;

public class SwingDemo {
	
	public static void main(String args[]) 
	{						
		System.out.printf("%8.2f",10000.0/3.0);
		System.out.println(" ");
		int i;
		for(i=3;i>0;i--)
		{
			System.out.println(i);
		}
		System.out.println("Vne"+i);
		SwingUtilities.invokeLater(new Runnable()
		{
			public void run() 
			{				
				
				FirstJFrame my;
				try {
					my = new FirstJFrame("pPPP");
				} catch (MalformedURLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				//my.setBackground(SystemColor.window);
				
				
			}
		});	
	}
}

package SwingDemo;

import java.awt.Dimension;
import java.awt.Image;
import java.awt.Toolkit;
import java.io.IOException;
import java.net.MalformedURLException;

import javax.swing.JFrame;
import javax.swing.JLabel;

public class FirstJFrame extends JFrame{

	FirstJFrame(String str) throws MalformedURLException, IOException {
		
		
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Toolkit kit = Toolkit.getDefaultToolkit();
		Dimension screenSize = kit.getScreenSize();
		int screenW = screenSize.width;
		int screenH = screenSize.height;
		JLabel mylab = new JLabel("Lable "+screenW+" "+screenW);
		
		Image img = kit.getImage("www.sos-dan.ru/images/avatars/yuki_ava24.gif");
		setIconImage(img);//Don't work
		setSize(screenW/2,screenH/2);
		setLocation(screenW/4,screenH/4);
		setTitle(str);
		
		FirstJPanel panel = new FirstJPanel();
		add(panel);
		//add(mylab); 
		setVisible(true);
	}
}

package SwingDemo;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

import javax.imageio.ImageIO;
import javax.swing.JPanel;

public class FirstJPanel extends JPanel{

	Image img;
	String URLname = "http://www.sos-dan.ru/images/avatars/yuki_ava18.gif";
	
	public FirstJPanel() throws MalformedURLException, IOException
	{
		img=ImageIO.read(new URL(URLname));
		// TODO Auto-generated constructor stub
	}

	public void paintComponent(Graphics g) {
		super.paintComponent(g);
		int X=100;
		int Y=100;
		Graphics2D g2 = (Graphics2D) g;
		double leftX = 20;
		double topY = 50;
		double width = 200;
		double height = 200;
		
		g2.drawString("SSS", X+20, Y+20);
		
		Rectangle2D.Double rect = new Rectangle2D.Double(leftX,topY,width,height);
		g2.draw(rect);
		
		Ellipse2D ellipse = new Ellipse2D.Double();
		ellipse.setFrame(rect);
		g2.draw(ellipse);
		
		g2.setPaint(new Color(255, 0,0));
		g2.draw(new Line2D.Double(leftX,topY,leftX+width,topY+height));
		
		g2.drawImage(img,0,0,null);
		
		g2.drawString("RRR", X, Y);
	}
	
	
		
	
}

$ javac -d tmp -sourcepath tmp/t1 tmp/t1/SwingDemo/*.java
$ java -cp tmp SwingDemo.SwingDemo
 3333,33 
3
2
1
Vne0

$ ls
SwingDemo
$ ls SwingDemo/
FirstJFrame.java  FirstJPanel.java  SwingDemo.java

$javac -d .. SwingDemo/SwingDemo.java
$