How to use MouseListener in java

 Code = >

import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.LineBorder;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

// Create a class and extend JFrame
//  Second Step - implement MouseListener interface
// Third Step - create an component - Square = I am using with help of JLabel
// We add more thing - for see location we add something
public class simple extends JFrame  implements MouseListener {
    // Create Constructor
    JLabel label;
    JLabel label1;
    Border border;
    simple(){
        // Create JFrame
        this.setSize(400,400);  // JFrame Size
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // For Closing JFrame by Click Cross button

//-----------We Add Border into frame for more good looking------
           border =new LineBorder(Color.black,2); // calling Border instance and set Color with size;
//----------JLabel-------------

        label=new JLabel(); // Create instance of JLabel;
        label1=new JLabel(); // Create instance of JLabel1;

        label.setBounds(10,40,50,50); // Set size of JLabel and Margin Also
        label1.setBounds(20,40,100,20); // Set size of JLabel and Margin Also

        label.setBackground(Color.GREEN); // Set Background of JLabel
        label.setOpaque(true);  // Set Visibilty of JLable if you choose false it is not visible


        label.setBorder(border); // add border;
        this.add(label); // then add into JFrame
        this.add(label1); // then add into JFrame
        label.addMouseListener(this); // It will be write here
        this.setLayout(null); // Layout null
        this.setVisible(true); // For visible JFrame

    }
    // Create Main Method
    public static void main(String[]args){
        // Create Class Object
        simple simple=new simple();

    }

    @Override
    public void mouseClicked(MouseEvent e) {
//--------------Last Step-------------
        // using Mouse clicked
        //int x=e.getX();  // By this , we get location , where i was clicked into frame;
        //int y = e.getY(); // now we not need this

        int width = 1365; // This is your screen Width size
        int height=765;  // And This is your Height of screen
        int min = 40;  // Min value it must be lie between your screen size

        int x= (int)(Math.random() * (width - min + 1 ))+min; // get x int location value
        int y= (int)(Math.random() * (height - min + 1 ))+min; // get y int location value

        label1.setText("X : "+x+" "+"Y : "+y); // For seeing Location
        int R= (int)(Math.random() * (255 - 10 + 1 ))+10;
        int G= (int)(Math.random() * (255 - 10 + 1 ))+10;
        int B= (int)(Math.random() * (255 - 10 + 1 ))+10;

        // Now we add jLabel int this x and y location
        label.setBackground(new Color(R,G,B)); // we will change background color with RGB value
        label.setLocation(x,y);
        // Last step is , we must will be added mouse listener into Lable

    }

    @Override
    public void mousePressed(MouseEvent e) {

    }

    @Override
    public void mouseReleased(MouseEvent e) {

    }

    @Override
    public void mouseEntered(MouseEvent e) {

    }

    @Override
    public void mouseExited(MouseEvent e) {

    }
}