Can anyone please help me out in removing this error
Exception in thread "main" java.lang.NullPointerException
at java.awt.Container.addImpl(Container.java:1045)
at java.awt.Container.add(Container.java:365)
at Client.<init>(Client.java:33)
at Client.main(Client.java:17)
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
public class Client {
JFrame frame1;
JList list;
JList list1;
JTextField tf;
JButton send;
JButton lout;
JLabel label;
JScrollPane scrollpane;
JScrollPane scrollpane1;
public static void main(String args[]) {
Client myclient = new Client();
}
public Client()
{
frame1 = new JFrame("Client");
tf=new JTextField();
send=new JButton("Send");
lout=new JButton("Logout");
label=new JLabel("Message");
JPanel panel = new JPanel();
panel.add(label);
panel.add(tf);
panel.add(label);
panel.add(send);
panel.add(lout);
panel.add(scrollpane1);
panel.add(scrollpane);
label.setBounds(10,320,80,30);
tf.setBounds(10,350,220,50);
send.setBounds(260,350,90,20);
lout.setBounds(260,375,90,20);
scrollpane.setBounds(10,20,220,300);
scrollpane1.setBounds(250,20,120,300);
frame1.add(panel);
panel.setLayout(null);
frame1.setSize(400,450);
frame1.setVisible(true);
frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}