If Statement in java.awt paint

Question

import java.applet.Applet;  //bring in the applet class
import java.awt.*;             //bring in the graphics class
import java.awt.event.*;      //bring in the event class
import java.text.DecimalFormat;    //bring in the decimal format class
import java.lang.Float;       //bring in the float class
public class Bmi extends Applet implements ActionListener {   //begin program and start ActionListener
  Label weight, height;    //define Label variable
  TextField weighttext, heighttext;    //define TextField variables
  Button calculate;     //define button variables
  float index, wt, ht, max, min;    //define float variables
  DecimalFormat fmt2 = new DecimalFormat("#.00"); //set decimal format for reals
public void init() {    //begin init()
  weight = new Label("Please enter your weight in Kg. (2 decimal places): ");   //define content of Label weight
  weighttext = new TextField(6);            //define size of TextField
  height = new Label("Please enter your height in Metres (2 decimal places): ");   //define content of Label height
  heighttext = new TextField(5);    //define size of TextField
  calculate = new Button("Calculate!!");       //define content of Button
  add(weight);      //add Label weight to the GUI
  add(weighttext);   //add TextField weighttext to the GUI
  add(height);      //add Label height to the GUI
  add(heighttext);     //add TextField heighttext to the GUI
  add(calculate);        //add button calculate to the GUI
  calculate.addActionListener(this);    //wait for button to be returned
  wt = 0;     //reset wt to 0
  index = 0;  //reset index to 0
  ht = 0;      //reset ht to 0
  max = 0;      //reset max to 0
  min = 0;    //reset min to 0
  public void actionPerformed( ActionEvent e ) {   //run upon return of button
  wt = Float.parseFloat(weighttext.getText());  //convert weighttext from String to Float
  ht = Float.parseFloat(heighttext.getText());    //covert heighttext from String to Float
  repaint();     //refresh paint area
  public float indexer()  //begin indexer method
    float ind;    //delare local variable ind
    ind = wt/(ht*ht);      //perform calculation
    return ind;    //make indexer() the value of variable ind
  }  // end of indexer method
  public float maxWeight()  //begin maxWeight method
    float maxwt;    //declare local variable maxwt
    final float UPPER = 25.0f;   //declare variable UPPER as a float with a decimal value of 25.0
    maxwt = UPPER*ht*ht;      //perform calculation
    return maxwt;          //make maxWeight() the value of variable maxwt
  }  // end of maxWeight method
  public float minWeight()   //begin minWeight method
    float minwt;    //declare local variable minwt
    final float LOWER= 20.0f;   //declare variable LOWER as a float with a decimal value of 20.0
    minwt = LOWER*ht*ht;    //perform calculation
    return minwt;      //make minWeight() the value of variable minwt
  }  // end of minWeight method
public void paint(Graphics g)    //begin paint method, define g as Graphics
    index=indexer();   //covert method indexer() to variable index
    max=maxWeight();      //convert method maxWeight() to variable max
    min=minWeight();     //convert method minWeight() to variable min
    g.setFont(new Font("Verdana", Font.ITALIC, 15));    //define font, weight and size
    g.setColor(new Color(90,90,90));     //set new colour
    g.drawRect(5,100,300,75);      //define size of rectangle
    g.setColor(new Color(255,107,9));   //set new colour
    g.drawString("BMI is " + fmt2.format(index) + " for " + fmt2.format(wt) + "kg",20,120);   //create string in paint, define its on screen position
    g.drawString("Maximum bodyweight is " + fmt2.format(max) + "kg", 20,140);   //create string in paint, define its on screen position
    g.drawString("Minimum bodyweight is " + fmt2.format(min) + "kg", 20,160);     //create string in paint, define its on screen position
  }  // end of paint method
}    // end of Bmi classI have written the above code to calculate someones BMI (Body Mass Index). Basically as you can see it recieves a weight and height from the user and calculates the rest. But whilst that good I would like to know how I can make it tell the user something to the effect of "Your overweight" or "Your underweight". The if statement runs like this:
if (wt > max)This forum doesn't quite handle <> properly. The greater and less than symbols. So above you will see > this is the html character code for a greater than symbol so please read it as such.
And then if wt is greater than max then it will say "Your overweight".
But I can't figure out how to include it in the above program. Becuase it won't run in paint, atleast it won't the way I have done it previously. So can you think of any other ways?
Help much appreciated,
Simon

Answer 1

Thanks very much that works well.
Simon
My code now looks like this: import java.applet.Applet;  //bring in the applet class
import java.awt.*;             //bring in the graphics class
import java.awt.event.*;      //bring in the event class
import java.text.DecimalFormat;    //bring in the decimal format class
import java.lang.Float;       //bring in the float class
public class Bmi extends Applet implements ActionListener {   //begin program and start ActionListener
  Label weight, height;    //define Label variable
  TextField weighttext, heighttext;    //define TextField variables
  Button calculate;     //define button variables
  float index, wt, ht, max, min;    //define float variables
  DecimalFormat fmt2 = new DecimalFormat("#.00"); //set decimal format for reals
public void init() {    //begin init()
  weight = new Label("Please enter your weight in Kg. (2 decimal places): ");   //define content of Label weight
  weighttext = new TextField(6);            //define size of TextField
  height = new Label("Please enter your height in Metres (2 decimal places): ");   //define content of Label height
  heighttext = new TextField(5);    //define size of TextField
  calculate = new Button("Calculate!!");       //define content of Button
  add(weight);      //add Label weight to the GUI
  add(weighttext);   //add TextField weighttext to the GUI
  add(height);      //add Label height to the GUI
  add(heighttext);     //add TextField heighttext to the GUI
  add(calculate);        //add button calculate to the GUI
  calculate.addActionListener(this);    //wait for button to be returned
  wt = 0;     //reset wt to 0
  index = 0;  //reset index to 0
  ht = 0;      //reset ht to 0
  max = 0;      //reset max to 0
  min = 0;    //reset min to 0
  public void actionPerformed( ActionEvent e ) {   //run upon return of button
  wt = Float.parseFloat(weighttext.getText());  //convert weighttext from String to Float
  ht = Float.parseFloat(heighttext.getText());    //covert heighttext from String to Float
  repaint();     //refresh paint area
  public float indexer()  //begin indexer method
    float ind;    //delare local variable ind
    ind = wt/(ht*ht);      //perform calculation
    return ind;    //make indexer() the value of variable ind
  }  // end of indexer method
  public float maxWeight()  //begin maxWeight method
    float maxwt;    //declare local variable maxwt
    final float UPPER = 25.0f;   //declare variable UPPER as a float with a decimal value of 25.0
    maxwt = UPPER*ht*ht;      //perform calculation
    return maxwt;          //make maxWeight() the value of variable maxwt
  }  // end of maxWeight method
  public float minWeight()   //begin minWeight method
    float minwt;    //declare local variable minwt
    final float LOWER= 20.0f;   //declare variable LOWER as a float with a decimal value of 20.0
    minwt = LOWER*ht*ht;    //perform calculation
    return minwt;      //make minWeight() the value of variable minwt
  }  // end of minWeight method
public void you(Graphics g)
  String statement;
  if(wt > max) statement="You are very fat";
  else if(wt < min) statement="You are very thin";
  else statement="You are in the recommended weight range for your height";
  g.drawString(statement, 20,210);
public void paint(Graphics g)    //begin paint method, define g as Graphics
    you(g);
    index=indexer();   //covert method indexer() to variable index
    max=maxWeight();      //convert method maxWeight() to variable max
    min=minWeight();     //convert method minWeight() to variable min
    g.setFont(new Font("Verdana", Font.ITALIC, 15));    //define font, weight and size
    g.setColor(new Color(90,90,90));     //set new colour
    g.drawRect(5,100,300,75);      //define size of rectangle
    g.setColor(new Color(255,107,9));   //set new colour
    g.drawString("BMI is " + fmt2.format(index) + " for " + fmt2.format(wt) + "kg",20,120);   //create string in paint, define its on screen position
    g.drawString("Maximum bodyweight is " + fmt2.format(max) + "kg", 20,140);   //create string in paint, define its on screen position
    g.drawString("Minimum bodyweight is " + fmt2.format(min) + "kg", 20,160);     //create string in paint, define its on screen position
  }  // end of paint method
}    // end of BmiThanks again,
Simon