Click on the screen and change the values of the variables

I need to implement in the code functionalities so that when I click on the screen, I change the values of some variables that are in the code. However, when I click, it stays the same.

My main class :

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Interface;

import java.awt.Point;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JFrame;

/**
 *
 * @author Pessoal
 */
public class Interface extends JFrame implements MouseListener{
    static Point p = new Point();
    public static void main(String[] args) {
        JFrame j = new JFrame("Interface");
        InterfaceClasse ic = new InterfaceClasse();
        j.add(ic);
        j.setSize(1300, 768);
        j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        j.setVisible(true);
        j.setResizable(false);

        ic.setTemperatura(30.0f);
        ic.setTensao(24.0f);
        ic.setVelocidade(10.0f);

    }
    @Override
    public void mouseClicked(MouseEvent e) {
        InterfaceClasse ic = new InterfaceClasse();
        p=getMousePosition();
        if(p.x>=50 && p.x <=350 && p.y>=284 && p.y<=484){
        ic.setTensao(20.0f);
        ic.setTemperatura(25.5f);
        ic.setVelocidade(3.5f);
            System.out.println("Deu certo");
        }
        if(p.x>=950 && p.x <=1250 && p.y>=284 && p.y<=484){
        ic.setTensao(27.0f);
        ic.setTemperatura(33.5f);
        ic.setVelocidade(14.0f);
            System.out.println("Deu certo");
        }
        if(p.x>=500 && p.x <=800 && p.y>=50 && p.y<=250){
        ic.setTensao(24.0f);
        ic.setTemperatura(35.5f);
        ic.setVelocidade(10.0f);
            System.out.println("Deu certo");
        }
        if(p.x>=500 && p.x <=800 && p.y>=518 && p.y<=718){
        ic.setTensao(17.0f);
        ic.setTemperatura(17.3f);
        ic.setVelocidade(2.0f);
            System.out.println("Deu certo");
        }
    }

    @Override
    public void mousePressed(MouseEvent e) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void mouseReleased(MouseEvent e) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void mouseEntered(MouseEvent e) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void mouseExited(MouseEvent e) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
}

My other class :

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Interface;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import javax.swing.JLabel;
import javax.swing.JPanel;

/**
 *
 * @author Pessoal
 */
public class InterfaceClasse extends JPanel{
    private float temperatura, velocidade, tensao;
    JLabel j;

    public InterfaceClasse(){
        int width, height;
        j = new JLabel("Temperatura");
        this.setSize(1200, 800);
    }
    @Override
    public void paintComponent(Graphics g){

        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.setColor(new Color(43,132,156));
        g2d.setFont(new Font("Serif", Font.BOLD, 20));
        g2d.drawString("Velocidade: ", 30, 20);
        String vel = Float.toString(velocidade);
        g2d.drawString(vel, "Velocidade: ".length()*10 + 15, 20);
        g2d.drawString("Temperatura: ", 30, 60);
        String temp = Float.toString(temperatura);
        g2d.drawString(temp, "Temperatuda: ".length() *11+10, 60);
        g2d.drawString("Tensão de entrada: ", 30, 100);
        String tens = Float.toString(tensao);
        g2d.drawString(tens, "Tensao de entrada: ".length() *10+10, 100);
    }

    public float getTemperatura() {
        return temperatura;
    }

    public void setTemperatura(float temperatura) {
        this.temperatura = temperatura;
    }

    public float getVelocidade() {
        return velocidade;
    }

    public void setVelocidade(float velocidade) {
        this.velocidade = velocidade;
    }

    public float getTensao() {
        return tensao;
    }

    public void setTensao(float tensao) {
        this.tensao = tensao;
    }

}

I'm wondering how I can change and resolve this.