Temperatura

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JApplet;
import java.awt.*;
import javax.swing.JOptionPane;

public class Temperatura extends javax.swing.JApplet {
public void init(){}


public void paint(Graphics g){
g.drawRect(200, 50, 20, 100);
g.drawOval(20,30,50,50);
g.drawString("-10 ºc", 230, 150);
g.drawString("+100 ºc", 230, 50);
String aux = JOptionPane.showInputDialog(null,"Ingrese el valor", "Titulo",JOptionPane.DEFAULT_OPTION);
int temp= Integer.parseInt(aux);
g.drawString("+"+temp+"ºc",230,150-temp);
g.setColor(Color.BLUE);
g.fillRect(200, 50, 20, 100-temp);
if (temp>80){
g.setColor(Color.RED);
g.fillOval(20, 30, 50, 50);
g.drawString("Alerta", 30, 10);
}
g.fillOval(20, 30, 50, 50);
}
}