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reshmaharidhasreshmaharidhas
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Create BMICalculator.java
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‎src/bmi/calculator/BMICalculator.java‎

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/*
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* To change this license header, choose License Headers in Project Properties.
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* To change this template file, choose Tools | Templates
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* and open the template in the editor.
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*/
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package bmi.calculator;
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import java.awt.Color;
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import java.awt.Font;
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import java.awt.Image;
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import java.awt.Toolkit;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.text.DecimalFormat;
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import javax.swing.JButton;
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import javax.swing.JFrame;
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import javax.swing.JLabel;
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import javax.swing.JOptionPane;
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import javax.swing.JTextField;
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import javax.swing.SwingConstants;
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/**
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*
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* @author Reshma
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*/
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public class BMICalculator implements ActionListener{
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JTextField tfHeight,tfWeight;
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static JLabel labelHeight,labelWeight,status,result,result2;
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JButton btn;
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JFrame frame;
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/**
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* @param args the command line arguments
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*/
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BMICalculator(){
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frame = new JFrame();
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Color c = new Color(240,128,128);
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frame.getContentPane().setBackground(c);
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Image icon = Toolkit.getDefaultToolkit().getImage("C:\\Documents\\NetBeansProjects\\BMI Calculator\\src\\logo\\logo.png");
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labelWeight = new JLabel("Weight in kg");
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labelWeight.setFont(new Font("Serif",Font.PLAIN,16));
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labelWeight.setForeground(Color.BLACK);
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labelWeight.setBounds(100,70,100,20);
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tfWeight = new JTextField();
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tfWeight.setToolTipText("Enter weight");
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tfWeight.setBounds(90,95,100,30);
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labelHeight = new JLabel("Height in cm");
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labelHeight.setFont(new Font("Serif",Font.PLAIN,16));
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labelHeight.setForeground(Color.BLACK);
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labelHeight.setBounds(100,130,100,20);
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tfHeight = new JTextField();
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tfHeight.setToolTipText("Enter height");
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tfHeight.setBounds(90,152,100,30);
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status = new JLabel();
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status.setHorizontalAlignment(SwingConstants.CENTER);
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status.setBounds(60,185,190,40);
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btn=new JButton("Calculate");
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btn.setBounds(95,230,90,30);
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btn.setBackground(Color.BLACK);
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btn.setForeground(Color.WHITE);
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result = new JLabel();
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result.setBounds(95,270,100,30);
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result.setHorizontalAlignment(SwingConstants.CENTER);
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result2 = new JLabel();
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result2.setBounds(50,300,190,60);
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result2.setHorizontalAlignment(SwingConstants.CENTER);
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result2.setOpaque(false);
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btn.addActionListener(this);
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frame.setIconImage(icon);
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frame.add(labelHeight);
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frame.add(labelWeight);
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frame.add(tfHeight);
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frame.add(tfWeight);
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frame.add(btn);
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frame.add(status);
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frame.add(result);
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frame.add(result2);
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frame.setSize(300,450);
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frame.setLayout(null);
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frame.setTitle("Height Calculator");
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frame.setVisible(true);
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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frame.setResizable(false);
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}
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// Convert height in centimeter to meter
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public static double centimeterToMeter(double cm){
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double metre = cm/100;
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return metre;
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}
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// Calculate BMI
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public static double findBMI(double height,double weight){
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double h = centimeterToMeter(height);
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double bmi = weight/h/h;
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DecimalFormat df = new DecimalFormat("##.##");
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String trimBmi=df.format(bmi);
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result.setFont(new Font("Serif",Font.PLAIN,16));
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result.setForeground(Color.black);
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result.setText("BMI is "+trimBmi);
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status.setOpaque(false);
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return bmi;
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}
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// Display bmi by JLabel
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public static void setResult(double bmi){
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result2.setFont(new Font("Serif",Font.PLAIN,20));
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result2.setOpaque(true);
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if(bmi<15){
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String s = "<html>Very severely<br> underweight</html>";
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result2.setBackground(new Color(0,0,255));
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result2.setForeground(Color.WHITE);
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result2.setText(s);
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}
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else if(bmi>=15 && bmi<16){
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result2.setBackground(new Color(102,153,255));
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result2.setForeground(Color.WHITE);
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result2.setText("Severely Underweight");
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}
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else if(bmi>=16 && bmi<18.5){
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result2.setBackground(new Color(102,255,255));
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result2.setForeground(Color.black);
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result2.setText("Underweight");
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}
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else if(bmi>=18.5 && bmi<=24.9){
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result2.setBackground(Color.GREEN);
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result2.setForeground(Color.black);
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result2.setText("Healthy");
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}
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else if(bmi>=25 && bmi<=29.9){
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result2.setBackground(Color.yellow);
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result2.setForeground(Color.black);
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result2.setText("Overweight");
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}
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else if(bmi>=30 && bmi<40){
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result2.setBackground(Color.orange);
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result2.setForeground(Color.black);
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result2.setText("Obese");
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}
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else if(bmi>=40){
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result2.setBackground(Color.red);
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result2.setForeground(Color.white);
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result2.setText("Extremely Obese");
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}
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}
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public static void main(String[] args) {
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// TODO code application logic here
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BMICalculator bmicalculator = new BMICalculator();
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}
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@Override
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public void actionPerformed(ActionEvent e) {
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if(tfWeight.getText().trim().isEmpty()){
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status.setOpaque(true);
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status.setBackground(new Color(204,153,255));
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status.setFont(new Font("Serif",Font.PLAIN,18));
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status.setText("Weight cannot be empty");
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}
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else if(tfHeight.getText().trim().isEmpty()){
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status.setOpaque(true);
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status.setBackground(new Color(204,153,255));
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status.setFont(new Font("Serif",Font.PLAIN,18));
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status.setText("Height cannot be empty");
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}
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else{
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try{
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double wtf = Double.parseDouble(tfWeight.getText());
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double htf = Double.parseDouble(tfHeight.getText());
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if(wtf==0 || htf==0){
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status.setText("");
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status.setOpaque(false);
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result.setText("");
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result2.setText("");
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result2.setOpaque(false);
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JOptionPane.showMessageDialog(frame,"Height and weight cannot be 0");
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}
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else{
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double userbmi=findBMI(htf,wtf);
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setResult(userbmi);
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status.setText("");
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}
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} catch(NumberFormatException nfe){
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status.setOpaque(true);
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status.setText("Enter only numbers");
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status.setForeground(Color.DARK_GRAY);
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status.setBackground(new Color(204,153,255));
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status.setFont(new Font("Serif",Font.PLAIN,18));
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}
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}
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}
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}

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