package com.lgauvin; 
 
import javax.swing.*; 
import java.awt.*; 
import java.awt.event.*; 
import java.util.HashMap; 
import java.util.Map; 
 
public class MMCalculator extends JApplet 
{ 
    /** 
     * Create the GUI. For thread safety, this method should 
     * be invoked from the event-dispatching thread. 
     */ 
 
    private JTextField textField1; 
    private JTextField textField2; 
    private JTextField textField3; 
    private JTextField textField4; 
    private JTextField textField5; 
    private JTextField textField6; 
    private JTextField textField7; 
    private JTextField textField8; 
    private JButton button1; 
    private JButton button2; 
    private JTextArea textArea1; 
 
    private void createGUI() 
    { 
        Color C1 = Color.decode("#FFFFFF"); 
        Color C2 = Color.decode("#228B22"); 
        Color C3 = Color.decode("#92C7C7"); 
        Color C4 = Color.decode("#347C2C"); 
 
        Toolkit tk = Toolkit.getDefaultToolkit(); 
        Dimension dim = tk.getScreenSize(); 
        int xPos = (dim.width / 2) - (this.getWidth() / 2); 
        int yPos = (dim.height / 2) - (this.getHeight() / 2); 
        this.setSize(500,dim.height-100); 
        this.setLocation(xPos, yPos); 
        this.setName("Molar Mass Calculator"); 
        JPanel thePanel = new JPanel(); 
        thePanel.setBackground(C2); 
        JLabel Element1 = new JLabel("Enter Element 1:"); 
        Element1.setForeground(Color.WHITE); 
        thePanel.add(Element1); 
        //JPanel 
 
        //button 
        button1 = new JButton("Calculate Molar Mass"); 
        ListenForButton lForButton = new ListenForButton(); 
        button1.addActionListener(lForButton); 
        button1.setBackground(C1); 
        //button 
 
        //button 2 
        button2 = new JButton("Clear"); 
        ListenForButton2 lForButton2 = new ListenForButton2(); 
        button2.addActionListener(lForButton2); 
        button2.setBackground(C1); 
 
        //text field 1 
        textField1 = new JTextField("", 15); 
        ListenForKeys lForKeys = new ListenForKeys(); 
        textField1.addKeyListener(lForKeys); 
        textField1.setBackground(C1); 
        textField1.setBounds(20,45,200,40); 
        thePanel.add(textField1); 
        //text field 1 
 
        JLabel Quantity1 = new JLabel("Quantity:"); 
        Quantity1.setForeground(Color.WHITE); 
        thePanel.add(Quantity1); 
 
        //text field 2 
        textField2 = new JTextField("0", 10); 
        textField2.addKeyListener(lForKeys); 
        textField2.setBackground(C1); 
        thePanel.add(textField2); 
        //text field 2 
 
        JLabel Element2 = new JLabel("Enter Element 2:"); 
        Element2.setForeground(Color.WHITE); 
        thePanel.add(Element2); 
 
 
        //text field 3 
        textField3 = new JTextField("", 15); 
        textField3.addKeyListener(lForKeys); 
        textField3.setBackground(C1); 
        thePanel.add(textField3); 
        //text field 3 
 
        JLabel Quantity2 = new JLabel("Quantity:"); 
        Quantity2.setForeground(Color.WHITE); 
        thePanel.add(Quantity2); 
 
        //text field 4 
        textField4 = new JTextField("0", 10); 
        textField4.addKeyListener(lForKeys); 
        textField4.setBackground(C1); 
        thePanel.add(textField4); 
        //text field 4 
 
        JLabel Element3 = new JLabel("Enter Element 3:"); 
        Element3.setForeground(Color.WHITE); 
        thePanel.add(Element3); 
 
        //text field 5 
        textField5 = new JTextField("", 15); 
        textField5.addKeyListener(lForKeys); 
        textField5.setBackground(C1); 
        thePanel.add(textField5); 
        //text field 5 
 
        JLabel Quantity3 = new JLabel("Quantity:"); 
        Quantity3.setForeground(Color.WHITE); 
        thePanel.add(Quantity3); 
 
        //text field 6 
        textField6 = new JTextField("0", 10); 
        textField6.addKeyListener(lForKeys); 
        textField6.setBackground(C1); 
        thePanel.add(textField6); 
        //text field 6 
 
        JLabel Element4 = new JLabel("Enter Element 4:"); 
        Element4.setForeground(Color.WHITE); 
        thePanel.add(Element4); 
 
        //text field 7 
        textField7 = new JTextField("", 15); 
        textField7.addKeyListener(lForKeys); 
        textField7.setBackground(C1); 
        thePanel.add(textField7); 
        //text field 8 
 
        JLabel Quantity4 = new JLabel("Quantity:"); 
        Quantity4.setForeground(Color.WHITE); 
        thePanel.add(Quantity4); 
 
        //text field 8 
        textField8 = new JTextField("0", 10); 
        textField8.addKeyListener(lForKeys); 
        textField8.setBackground(C1); 
        thePanel.add(textField8); 
        //text field 8 
 
 
 
 
        //text area 
        textArea1 = new JTextArea(40, 40); 
        textArea1.setRows(((dim.height)/25)); 
        textArea1.setText(""); 
        textArea1.setLineWrap(true); 
        textArea1.setWrapStyleWord(true); 
        textArea1.setBackground(C1); 
        thePanel.add(button1); 
        thePanel.add(button2); 
        //text area 
 
        //scrollbar 
        JScrollPane scrollbar1 = new JScrollPane(textArea1, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); 
        thePanel.add(scrollbar1); 
        this.add(thePanel); 
        //scrollbar 
 
 
        this.setVisible(true); 
        ListenForMouse lForMouse = new ListenForMouse(); 
        thePanel.addMouseListener(lForMouse); 
    } 
 
 
 
    private class ListenForButton implements ActionListener { 
        public void actionPerformed(ActionEvent e) { 
 
 
            if (e.getSource() == button1) 
 
                textArea1.append(null); 
            Map<String, Double> molarMass  = new HashMap<>(); 
            molarMass.put("H", 1.01);   //Element 1 
            molarMass.put("He", 4.00);  //2 
            molarMass.put("Li",6.94);   //3 
            molarMass.put("Be",9.01);   //4 
            molarMass.put("B", 10.81);  //5 
            molarMass.put("C", 12.01);   //6 
            molarMass.put("N", 14.01);  //7 
            molarMass.put("O", 16.00);    //8 
            molarMass.put("F", 19.00);    //9 
            molarMass.put("Ne", 20.18);   //10 
            molarMass.put("Na", 22.99);   //11 
            molarMass.put("Mg", 24.31);   //12 
            molarMass.put("Al", 26.98);    //13 
            molarMass.put("Si", 28.07);   //14 
            molarMass.put("P", 30.97);    //15 
            molarMass.put("S", 32.07);    //16 
            molarMass.put("Cl", 35.45);   //17 
            molarMass.put("Ar", 39.95);   //18 
            molarMass.put("K", 39.10);     //19 
            molarMass.put("Ca", 40.08);    //20 
            molarMass.put("Sc", 44.96);     //21 
            molarMass.put("Ti", 47.87);    //22 
            molarMass.put("V", 50.94);       //23 
            molarMass.put("Cr", 52.00);      //24 
            molarMass.put("Mn", 54.94);      //25 
            molarMass.put("Fe",55.85);      //26 
            molarMass.put("Co", 58.93);      //27 
            molarMass.put("Ni", 58.69);      //28 
            molarMass.put("Cu", 63.55);       //29 
            molarMass.put("Zn", 65.38);       //30 
            molarMass.put("Ga", 69.72);       //31 
            molarMass.put("Ge", 72.64);        //32 
            molarMass.put("As", 74.92);     //33 
            molarMass.put("Se", 78.96);     //34 
            molarMass.put("Br", 79.90);      //35 
            molarMass.put("Kr", 83.80);      //36 
            molarMass.put("Rb", 85.47);      //37 
            molarMass.put("Sr", 87.62);      //38 
            molarMass.put("Y", 88.91);             //39 
            molarMass.put("Zr", 91.22);             //40 
            molarMass.put("Nb", 92.91);             //41 
            molarMass.put("Mo", 95.94);             //42 
            molarMass.put("Tc", 98.00);             //43 
            molarMass.put("Ru", 101.07);             //44 
            molarMass.put("Rh", 102.91);             //45 
            molarMass.put("Pd", 106.42);             //46 
            molarMass.put("Ag", 107.87);             //47 
            molarMass.put("Cd", 112.41);             //48 
            molarMass.put("In", 114.82);             //49 
            molarMass.put("Sn", 118.71);             //50 
            molarMass.put("Sb", 121.76);       //51 
            molarMass.put("Te", 127.60);       //52 
            molarMass.put("I", 126.90);       //53 
            molarMass.put("Xe", 131.29);       //54 
            molarMass.put("Cs", 132.91);       //55 
            molarMass.put("Ba", 137.33);       //56 
            molarMass.put("La", 138.91);       //57 
            molarMass.put("Ce", 140.12);       //58 
            molarMass.put("Pr", 140.91);       //59 
            molarMass.put("Nd", 144.24);       //60 
            molarMass.put("Pm", 145.00);       //61 
            molarMass.put("Sm", 150.36);       //62 
            molarMass.put("Eu", 151.96);       //63 
            molarMass.put("Gd", 157.25);       //64 
            molarMass.put("Tb", 158.93);       //65 
            molarMass.put("Dy", 162.50);       //66 
            molarMass.put("Ho", 164.93);       //67 
            molarMass.put("Er", 167.26);       //68 
            molarMass.put("Tm", 168.93);       //69 
            molarMass.put("Yb", 173.04);       //70 
            molarMass.put("Lu", 174.97);       //71 
            molarMass.put("Hf", 178.49);       //72 
            molarMass.put("Ta", 180.95);       //73 
            molarMass.put("W", 183.84);       //74 
            molarMass.put("Re", 186.21);       //75 
            molarMass.put("Os", 190.23);       //76 
            molarMass.put("Ir", 192.22);       //77 
            molarMass.put("Pt", 196.08);       //78 
            molarMass.put("Au", 196.97);       //79 
            molarMass.put("Hg", 200.59);       //80 
            molarMass.put("Tl", 204.38);       //81 
            molarMass.put("Pb", 207.20);       //82 
            molarMass.put("Bi", 208.98);       //83 
            molarMass.put("Po", 209.00);       //84 
            molarMass.put("At", 210.00);       //85 
            molarMass.put("Rn", 222.00);      //86 
            molarMass.put("Fr", 223.00);       //87 
            molarMass.put("Ra", 226.00);       //88 
            molarMass.put("", 0.00);       //null value 
 
 
            //first element 
            String a = textField1.getText(); 
 
            //first element quantity 
            int n = Integer.parseInt(textField2.getText()); 
 
            //second element 
            String b = textField3.getText(); 
 
            // second element quantity 
            int k = Integer.parseInt(textField4.getText()); 
 
            //third element 
            String c = textField5.getText(); 
 
            //third element quantity 
            int z = Integer.parseInt(textField6.getText()); 
 
            //fourth element 
            String d = textField7.getText(); 
 
            //fourth element quantity 
            int y = Integer.parseInt(textField8.getText()); 
 
            double mM = (molarMass.get(a) * n) + (molarMass.get(b) * k) + (molarMass.get(c) * z) + (molarMass.get(d) * y); 
 
            textArea1.append("\n \nThe molar mass of "); 
            textArea1.append(a); 
            if (n > 1){ 
                textArea1.append(String.valueOf(n)); 
            } 
            textArea1.append(b); 
            if (k > 1){ 
                textArea1.append(String.valueOf(k)); 
            } 
            textArea1.append(c); 
            if (z > 1){ 
                textArea1.append(String.valueOf(z)); 
            } 
            textArea1.append(d); 
            if (y > 1){ 
                textArea1.append(String.valueOf(y)); 
            } 
            textArea1.append(" is:"); 
            textArea1.append("\n" + String.valueOf(mM)); 
        } 
    } 
 
    private class ListenForButton2 implements ActionListener { 
        public void actionPerformed(ActionEvent e) { 
            textArea1.setText(null); 
        } 
    } 
    private class ListenForWindow implements WindowListener { 
        public void windowActivated(WindowEvent e) { 
        } 
 
        public void windowClosed(WindowEvent arg0) { 
            // TODO Auto-generated method stub 
        } 
 
        public void windowClosing(WindowEvent arg0) { 
            // TODO Auto-generated method stub 
        } 
 
        public void windowDeactivated(WindowEvent e) { 
        } 
 
        public void windowDeiconified(WindowEvent arg0) { 
        } 
 
        public void windowIconified(WindowEvent arg0) { 
        } 
 
        public void windowOpened(WindowEvent arg0) { 
        } 
    } 
    public void init() 
    { 
        try 
        { 
            SwingUtilities.invokeAndWait(this::createGUI); 
        } 
        catch (Exception e) 
        { 
            System.err.println("createGUI didn't successfully complete: " + e); 
        } 
    } 
 
    public static void main(String[] args) 
    { 
        JApplet applet = new MMCalculator(); 
        applet.init(); 
 
        JFrame frame = new JFrame("Applet in Frame"); 
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); 
        frame.add( applet ); 
        frame.pack(); 
        Toolkit tk = Toolkit.getDefaultToolkit(); 
        Dimension dim = tk.getScreenSize(); 
        frame.setSize(500,dim.height-100); 
        frame.setLocationRelativeTo( null ); 
        frame.setVisible( true ); 
 
        applet.start(); 
    } 
} 
 
 
class ListenForKeys implements KeyListener { 
    public void keyTyped(KeyEvent e) { 
    } 
 
    public void keyPressed(KeyEvent e) { 
    } 
 
    public void keyReleased(KeyEvent e) { 
    } 
} 
class ListenForMouse implements MouseListener { 
 
    public void mouseClicked(MouseEvent e) { 
    } 
 
    public void mouseEntered(MouseEvent arg0) { 
 
        // TODO Auto-generated method stub 
    } 
 
    public void mouseExited(MouseEvent arg0) { 
 
        // TODO Auto-generated method stub 
    } 
 
    public void mousePressed(MouseEvent arg0) { 
        // TODO Auto-generated method stub 
    } 
 
    public void mouseReleased(MouseEvent arg0) { 
        // TODO Auto-generated method stub 
    } 
}