import java.awt.Color;
import java.awt.geom.GeneralPath;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JPanel;
 
public class CubeJPanel extends JPanel {
 
	// draw cube
	public void paintComponent( Graphics g ) {
		super.paintComponent( g );
 
	// one base
	int base1X[] = { 100, 100, 200, 200, 100 };
	int base1Y[] = { 100, 200, 200, 100, 100 };
 
	// second base
	int base2X[] = { 75, 75, 175, 175, 75 };
	int base2Y[] = { 75, 175, 175 ,75, 75 };
 
	Graphics2D g2d = ( Graphics2D ) g;
	g2d.setColor( Color.red );
 
	GeneralPath cube = new GeneralPath();
 
		// create path for the cube
		for ( int i = 1; i <= 4; i++ ) {
			// create the first base
			cube.moveTo( base1X[ i - 1 ], base1Y[ i - 1 ] );
			cube.lineTo( base1X[ i ], base1Y[ i ] );
 
			// create the second base
			cube.moveTo( base2X[ i - 1 ], base2Y[ i - 1 ] );
			cube.lineTo( base2X[ i ], base2Y[ i ] );
 
			// create the lines between the bases
			cube.moveTo( base1X[ i ], base1Y[ i ] );
			cube.lineTo( base2X[ i ], base2Y[ i ] );
		} // end for
 
		g2d.draw( cube );
	} // end method paintComponent
} // end class CubeJPanel
 

import javax.swing.JFrame;
 
public class Cube {
 
	public static void main( String args[] ) {
		// create frame for CubeJPanel
		 JFrame frame = new JFrame( "Cube" );
		 frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
		 CubeJPanel cubeJPanel = new CubeJPanel();
		 frame.add( cubeJPanel ); // add cubeJPanel to frame
		 frame.setSize( 250, 270 ); // set frame size
		 frame.setVisible( true ); // display frame
	} // end main
} // end class Cube