How to draw a rectangle in the JPanel by inserting the X and Y

[ngansamuel]

I have done some of the program,but there are some fill in the blanks in it,i don't know what can i type in it.Please help me to fill in it.There are two programs.Thanks a lot.

// PanalDraw.java
import java.awt.Graphics;
import javax.swing.JPanel;
public class PanelDraw extends JPanel
{
_______ Rectangle rectangleList[] = new Rectangle[____];
_______ int index = 0;
static final long serialVersionUID=0; // avoid anymore warning
public PanelDraw(Rectangle rect){
addRect(_________);
}
public void ________(Rectangle ______){
rectangleList[_______] = rect;
index++;
}
public void paintComponent( Graphics g ){
super.paintComponent( g );
for (int i=0; i<_________; i++)
rectangleList[i].paintComponent(g);
}
}


// PanelDrawTest.java
import java.awt.Graphics;
import javax.swing.JPanel;
public class PanelDrawTest {
public static void main(String[] args) {
String x1 = JOptionPane.showInputDialog("Enter x1");
String y1 = JOptionPane.showInputDialog("Enter y1");
String x2 = JOptionPane.showInputDialog("Enter x2");
String y2 = JOptionPane.showInputDialog("Enter y2");
Point point1 = new Point(Integer.parseInt(x1), Integer.parseInt(y1));
Point point2 = new Point(Integer.parseInt(x2), Integer.parseInt(y2));
PanelDraw myPanel = new PanelDraw(new Rectangle(point1, point2));
JFrame application = new JFrame(__________); // creates a new JFrame
application.setLocation(100, 100);
application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
application.add(myPanel); // add the panel to the frame
application.setSize( 300, 300 ); // set the desired size
application.setVisible(true); // show the frame
}
}

[Fubarable]

wishing you lots of _________ on this one.

Seriously: The way this works is that first make a serious attempt at answering all the questions, then come here for help. Otherwise you're just appearing lazy, and I know you don't want to do that, right?

[ngansamuel]

I have done it more than before ,but the space i really don't know the answer!Please help