How to place panel into frame

[vivek_9912]

Hi Everybody !! I am new to Swing and am working on a GUI based Elevator Simulation System. I am using Frame on which I am trying to put a Panel. But the panel does not set to the size I want it to even if I use setSize() method. I am posting the code .Could anyone please help me.

Thanks !!

package elevator; import javax.swing.*;import java.awt.*; public class Controller {        public static void main(String args[])    {              Container cpane;      JFrame frame = new JFrame("ELEVATOR");      cpane = frame.getContentPane();      Lift1Panel lp1 = new Lift1Panel();      frame.setVisible(true);      frame.setSize(1300,800);      frame.add(lp1);      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);         }        }      package elevator; import javax.swing.*;import java.awt.*;  public class Lift1Panel extends JPanel {            public Lift1Panel()     {         setSize(200,200);            }         public void paintComponent(Graphics g)    {             super.paintComponent(g);             Graphics2D g2d = (Graphics2D)g;     g2d.setColor(Color.WHITE);      g2d.drawRect(10,10,100,100);           }  }

[hardwired]

import javax.swing.*;
import java.awt.*;

public class ControllerRx {
    public static void main(String[] args) {
        JFrame frame = new JFrame("ELEVATOR");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        Container cpane = frame.getContentPane();
        cpane.setLayout(new GridBagLayout());
        Lift1Panel lp1 = new Lift1Panel();
        frame.add(lp1, new GridBagConstraints());
        frame.setSize(600,400);
        frame.setVisible(true);
    }
}

class Lift1Panel extends JPanel {
    public Lift1Panel() {
        setPreferredSize(new Dimension(200,200));
        setBackground(Color.pink);
    }

    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D)g;
        g2d.setColor(Color.WHITE);
        g2d.drawRect(10,10,100,100);
    }
}

[vivek_9912]

Thanks !! The changes suggested worked.