Placing multiple objects in a region of borderlayout

I want to place more than one element in one region of BorderLayout. As suggest on various sites, I used 3 separate panels for 3 regions and placed 2 elements in different regions in each panel. However I did not get the desired result. This is my code:

public class Trial extends JFrame{
JPanel p1,p2,p3;
JLabel l1,l2,l3,l4,l5,l6;

Trial(){
    p1=new JPanel();
    p2=new JPanel();
    p3=new JPanel();
    l1=new JLabel("Hello");
    l2=new JLabel("Hi");
    l3=new JLabel("Welcome");
    l4=new JLabel("Bye");
    l5=new JLabel("Visit again");
    l6=new JLabel("Thanks");
    p1.add(l1,BorderLayout.NORTH);
    p1.add(l2,BorderLayout.CENTER);
    p2.add(l3,BorderLayout.CENTER);
    p2.add(l4,BorderLayout.SOUTH);
    p3.add(l5,BorderLayout.NORTH);
    p3.add(l6,BorderLayout.SOUTH);
    add(p1,BorderLayout.NORTH);
    add(p2,BorderLayout.CENTER);
    add(p3,BorderLayout.SOUTH);
}
public static void main(String[] args){
    Trial t=new Trial();
    t.setSize(500,500);
    t.setVisible(true);
}
}

Could somebody please suggest me how to correct it?

The default layout of JPanel is FlowLayout. You should set layout for each panel like p1.setLayout(new BorderLayout());

Here is the code and hope it can help you.

import java.awt.BorderLayout;
import java.awt.Color;

import javax.swing.*;

public class Trial extends JFrame {
    JPanel p1, p2, p3;
    JLabel l1, l2, l3, l4, l5, l6;

    Trial() {
        p1 = new JPanel();
        p1.setLayout(new BorderLayout());
        p1.setBackground(Color.gray);
        p2 = new JPanel();
        p2.setLayout(new BorderLayout());
        p2.setBackground(Color.yellow);
        p3 = new JPanel();
        p3.setLayout(new BorderLayout());
        p3.setBackground(Color.pink);
        l1 = new JLabel("Hello");
        l2 = new JLabel("Hi");
        l3 = new JLabel("Welcome");
        l4 = new JLabel("Bye");
        l5 = new JLabel("Visit again");
        l6 = new JLabel("Thanks");
        p1.add(l1, BorderLayout.NORTH);
        p1.add(l2, BorderLayout.CENTER);
        p2.add(l3, BorderLayout.CENTER);
        p2.add(l4, BorderLayout.SOUTH);
        p3.add(l5, BorderLayout.NORTH);
        p3.add(l6, BorderLayout.SOUTH);
        add(p1, BorderLayout.NORTH);
        add(p2, BorderLayout.CENTER);
        add(p3, BorderLayout.SOUTH);
    }

    public static void main(String[] args) {
        Trial t = new Trial();
        t.setSize(500, 500);
        t.setVisible(true);
    }
}

Here is the effect: