everything works except i need to add the polynomial in my addAction class and i

Question

everything works except i need to add the polynomial in my addAction class and i dont know how and how to multiply them and get a total as the answer in my multiplAction class. import java.awt.*; //import libraries import java.awt.event.*; import javax.swing.*; import java.util.LinkedList; import java.util.StringTokenizer; public class PolynomialProgram extends JFrame{ private JTextField JTextField("Enter one polynomial value" , 30); private JTextField nextPolynomialField = new JTextField("Enter last polynomial value" , 30); private JButton multiplyonePolynomialButton = new JButton("Multiply by"); private JButton multiplynextPolynomialButton = new JButton("Multiply by"); private JTextField JTextField(5); //4 textfield private JTextField nextPolynomialMultiplyField = new JTextField(5); private JButton addDigitButton = new JButton("Add Polynomials"); //5 buttons private JButton closeButton = new JButton("CLOSE"); private JButton helpButton = new JButton("HELP"); public static void main(){ PolynomialProgram digit = new PolynomialProgram(); digit.setDefaultCloseOperation(EXIT_ON_CLOSE); digit.setTitle("Polynomials testing"); digit.buildGUI(); digit.setVisible(true); digit.setSize(440,320); } public void buildGUI(){ JPanel onePolyPanel, nextPolyPanel, controlPanel; Container window = getContentPane(); window.setLayout(new BoxLayout(window,BoxLayout.Y_AXIS)); multiplyonePolynomialButton.addActionListener(new MultiplyAction()); multiplynextPolynomialButton.addActionListener(new MultiplyAction()); addDigitButton.addActionListener(new AddDigitAction()); //create a separate class to use this helpButton.addActionListener(new HelpAction()); closeButton.addActionListener(new ExitAction()); window.add(Box.createRigidArea(new Dimension(0,30))); JPanel(); onePolyPanel.setLayout(new BoxLayout(onePolyPanel,BoxLayout.X_AXIS)); //box shape layout onePolyPanel.add(Box.createRigidArea(new Dimension(10,0))); onePolynomialField.setMaximumSize(new Dimension(200,20)); onePolyPanel.add(onePolynomialField); //add first field to window pane onePolyPanel.add(Box.createRigidArea(new Dimension(20,0))); onePolyPanel.add(multiplyonePolynomialButton); //add button to window onePolynomialMultiplyField.setMaximumSize(new Dimension(60,20)); //mutiply field for first value onePolyPanel.add(Box.createRigidArea(new Dimension(5,0))); onePolyPanel.add(onePolynomialMultiplyField); onePolyPanel.add(Box.createHorizontalGlue()); window.add(onePolyPanel); window.add(Box.createRigidArea(new Dimension(0,10))); nextPolyPanel = new JPanel(); nextPolyPanel.setLayout(new BoxLayout(nextPolyPanel,BoxLayout.X_AXIS)); nextPolyPanel.add(Box.createRigidArea(new Dimension(10,0))); nextPolynomialField.setMaximumSize(new Dimension(200,20)); nextPolyPanel.add(nextPolynomialField); //add second field to the window nextPolyPanel.add(Box.createRigidArea(new Dimension(20,0))); nextPolyPanel.add(multiplynextPolynomialButton); nextPolynomialMultiplyField.setMaximumSize(new Dimension(60,20)); //multiply field for second value nextPolyPanel.add(Box.createRigidArea(new Dimension(5,0))); nextPolyPanel.add(nextPolynomialMultiplyField); nextPolyPanel.add(Box.createHorizontalGlue()); window.add(nextPolyPanel); window.add(Box.createRigidArea(new Dimension(0,40))); controlPanel = new JPanel(); controlPanel.setLayout(new BoxLayout(controlPanel,BoxLayout.X_AXIS)); controlPanel.add(Box.createRigidArea(new Dimension(10,0))); controlPanel.add(addDigitButton); //add both polynomials together controlPanel.add(Box.createHorizontalGlue()); controlPanel.add(Box.createRigidArea(new Dimension(60,0))); controlPanel.add(helpButton); controlPanel.add(Box.createRigidArea(new Dimension(15,0))); controlPanel.add(closeButton); controlPanel.add(Box.createRigidArea(new Dimension(10,0))); window.add(controlPanel); window.add(Box.createRigidArea(new Dimension(0,40))); window.add(Box.createVerticalGlue()); } private class MultiplyAction implements ActionListener { public void actionPerformed(ActionEvent event) { float coefficient; int exponent; // Term term; // Polynomial poly1, poly2; String s = new String(), token; if (event.getSource().equals(multiplyonePolynomialButton)) { //poly1 = new Polynomial(); s = onePolynomialField.getText(); } else if (event.getSource().equals(multiplynextPolynomialButton)) { //poly2 = new Polynomial(); s = nextPolynomialField.getText(); } StringTokenizer st = new StringTokenizer(s); try { // get polynomial while (st.hasMoreTokens()) { token = st.nextToken(); coefficient = Float.parseFloat(token); if (!st.hasMoreTokens()) { exponent = 2; } else if (!(st.nextToken().equals("x"))) { throw new Exception(); } else { token = st.nextToken(" +"); exponent = Integer.parseInt(token); } JOptionPane.showMessageDialog(null, "Term = " + coefficient + "x" + exponent); /* * term = new Term(coefficient,exponent); * if (event.getSource().equals(multiplyFirstButton)) { * poly1.add(term); * } * else if (event.getSource().equals(multiplySecondButton)) { * poly2.add(term); * } * */ } /* get the multiplication value from appropriat field, multiply & then display new polynomial * if (event.getSource().equals(multiplyFirstButton)) { * result = poly1.multiply(value); * result.display(); * } * else if (event.getSource().equals(multiplySecondButton)) { * result = poly2.multipoly(value); * result.display(); * } */ } catch (Exception e) { JOptionPane.showMessageDialog(null,"Invalid Polynomial","Error",JOptionPane.ERROR_MESSAGE); } } } private class AddDigitAction implements ActionListener{ public void actionPerformed(ActionEvent event) { //what to add in the middle here to make the polynomials add to each other and return a logical answer. } } private class HelpAction implements ActionListener { public void actionPerformed(ActionEvent event) { String s = new String (); s = "Enter Polyonomials as: 12 x 8 + 7.7 x 5 + 89.5 " + "There must be a space between all entries "; JOptionPane.showMessageDialog(null, s, "Polynomial Instructions", JOptionPane.INFORMATION_MESSAGE); } } private class ExitAction implements ActionListener { public void actionPerformed(ActionEvent event) { System.exit(0); } } }

Explanation / Answer

I am working on this ! Question is clear here !! :)

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