Java Programming Math Problem Example | Topics and Well Written Essays - 1250 words

Java Programming - Math Problem Example instant java.awt.BorderLayout logical implication java.awt.Colorimport java.awt.Containerimport java.awt.FlowLayoutimport java.awt.Fontimport java.awt.GridLayoutimport java.awt.Windowimport java.awt.event.ActionEventimport java.awt.event.ActionListenerimport java.awt.event.WindowAdapterimport java.awt.event.WindowEventimport javax.swing.JButtonimport javax.swing.JDialogimport javax.swing.JFrameimport javax.swing.JLabelimport javax.swing.JMenuimport javax.swing.JMenuBarimport javax.swing.JMenuItemimport javax.swing.JPanelimport javax.swing.JTextAreaimport javax.swing.JOptionPanepublic class computing machine extends JFrame implements ActionListener // Variables final int MAX_INPUT_LENGTH = 20 final int INPUT_MODE = 0 final int RESULT_MODE = 1 final int ERROR_MODE = 2 int displayMode boolean clearOnNextDigit, percent reprize lastNumber String lastOperator private JMenu jmenuFile, jmenuEdit, jmenuView, jmenuHelp private JMenuItem jmenuitemExit, jmenuitemCopy, jmenuitemPaste, jmenuitemStd, jmenuitemSci, jmenuitemDigitGrp, jmenuitemAbout private JDialog dialog private JLabel display private JButton button private JPanel masterPanelprivate JTextArea textarea Font f12 = new Font(Times New papistical, 0, 12) Font f121 = new Font(Times New Roman, 1, 12) ... jmenuitemSci = new JMenuItem(Scientific) jmenuitemSci.setFont(f12) jmenuitemDigitGrp = new JMenuItem(Digit Grouping) jmenuitemDigitGrp.setFont(f12) jmenuView.add(jmenuitemStd)jmenuView.add(jmenuitemSci)jmenuView.addSeparator()jmenuView.add(jmenuitemDigitGrp) jmenuHelp = new JMenu(Help) jmenuHelp.setFont(f121) jmenuitemAbout = new JMenuItem(About Calculator) jmenuitemAbout.setFont(f12) jmenuHelp.add(jmenuitemAbout) JMenuBar mb = new JMenuBar() // mb.add(jmenuFile) mb.add(jmenuEdit) mb.add(jmenuView) mb.add(jmenuHelp) setJMenuBar(mb) //Set frame layout manager setBackground(Color.gray) //adds menubar to frame (end) masterPanel = new JPanel() display = new JLabel(0) display.se tAlignmentX(JLabel.RIGHT) display.setBackground(Color.gray) Container contentPane = getContentPane() // Add components to frame contentPane.add(display, BorderLayout.NORTH) button = new JButton23 JPanel backspacer = new JPanel() backSpace.setLayout(new GridLayout(1, 1, 2, 2)) button20 = new JButton(Backspace) backSpace.add(button20) JPanel control = new JPanel() control.setLayout(new GridLayout(1, 2, 2 ,2)) button21 = new JButton( CE ) button22 = new JButton(C) control.add(button21) control.add(button22)