Scientific: Calculator Source Code In Java Free Download

📋 Overview A scientific calculator built in Java Swing with support for basic arithmetic, trigonometric functions, logarithms, exponents, and more. This is a complete, ready-to-run project. 📁 Project Structure ScientificCalculator/ ├── src/ │ ├── ScientificCalculator.java │ ├── CalculatorEngine.java │ └── CalculatorUI.java ├── README.md └── build.bat (Windows) / build.sh (Linux/Mac) 💻 Complete Source Code 1. ScientificCalculator.java (Main Class) import javax.swing.*; import javax.swing.border.*; import java.awt.*; import java.awt.event.*; import java.math.BigDecimal; import java.math.RoundingMode; public class ScientificCalculator extends JFrame private JTextField displayField; private JPanel buttonPanel; private CalculatorEngine engine; private boolean isDegree = true; // true = DEG, false = RAD

public ScientificCalculator() engine = new CalculatorEngine(); initializeUI(); setTitle("Scientific Calculator"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setResizable(false); pack(); setLocationRelativeTo(null);

# Save the code as ScientificCalculator.java javac ScientificCalculator.java CalculatorEngine.java java ScientificCalculator For any issues, check that all three Java files are in the same directory and compiled together. The calculator will open as a standalone window with full scientific functionality. scientific calculator source code in java free download

private JButton createStyledButton(String text)

public String calculate(String expression, boolean isDegree) try Double.isInfinite(result)) return "Error"; // Round to 10 decimal places BigDecimal bd = new BigDecimal(result); bd = bd.setScale(10, RoundingMode.HALF_UP); // Remove trailing zeros String formatted = bd.toPlainString(); if (formatted.contains(".")) formatted = formatted.replaceAll("0*$", ""); formatted = formatted.replaceAll("\\.$", ""); return formatted; catch (Exception e) return "Error"; 📋 Overview A scientific calculator built in Java

private void addButtons() GridBagConstraints gbc = new GridBagConstraints(); gbc.fill = GridBagConstraints.BOTH; gbc.weightx = 1; gbc.weighty = 1; gbc.insets = new Insets(2, 2, 2, 2); String[][] buttons = "sin", "cos", "tan", "asin", "acos", "atan", "sinh", "cosh", "tanh", "log", "ln", "√", "x²", "x³", "xʸ", "eˣ", "10ˣ", "∛", x, "π", "e", "(", ")", "C", "CE", "7", "8", "9", "/", "mod", "rand", "4", "5", "6", "*", "xʸ", "xʸ", "1", "2", "3", "-", "xʸ", "xʸ", "0", ".", "+/-", "+", "=", "xʸ" ; int row = 0; for (String[] buttonRow : buttons) int col = 0; for (String btnText : buttonRow) gbc.gridx = col; gbc.gridy = row; JButton button = createStyledButton(btnText); // Special sizing for equals button if (btnText.equals("=")) gbc.gridheight = 2; button.setBackground(new Color(76, 175, 80)); button.setForeground(Color.WHITE); else gbc.gridheight = 1; button.addActionListener(new ButtonClickListener(btnText)); buttonPanel.add(button, gbc); col++; row++; gbc.gridheight = 1; // Reset

public void setAngleMode(boolean degree) this.degreeMode = degree; ScientificCalculator

private void initializeUI() setLayout(new BorderLayout(10, 10)); // Display Panel JPanel displayPanel = new JPanel(new BorderLayout()); displayField = new JTextField("0"); displayField.setFont(new Font("Monospaced", Font.BOLD, 28)); displayField.setHorizontalAlignment(JTextField.RIGHT); displayField.setEditable(false); displayField.setBackground(Color.WHITE); displayField.setBorder(BorderFactory.createCompoundBorder( BorderFactory.createLineBorder(Color.GRAY), BorderFactory.createEmptyBorder(10, 10, 10, 10) )); displayPanel.add(displayField, BorderLayout.CENTER); // Mode Panel JPanel modePanel = new JPanel(new FlowLayout(FlowLayout.LEFT)); JRadioButton degRadio = new JRadioButton("DEG", true); JRadioButton radRadio = new JRadioButton("RAD", false); ButtonGroup modeGroup = new ButtonGroup(); modeGroup.add(degRadio); modeGroup.add(radRadio); degRadio.addActionListener(e -> isDegree = true; engine.setAngleMode(true); ); radRadio.addActionListener(e -> isDegree = false; engine.setAngleMode(false); ); modePanel.add(degRadio); modePanel.add(radRadio); modePanel.add(Box.createHorizontalStrut(20)); JLabel statusLabel = new JLabel("Scientific Calculator v1.0"); statusLabel.setForeground(Color.GRAY); modePanel.add(statusLabel); displayPanel.add(modePanel, BorderLayout.NORTH); add(displayPanel, BorderLayout.NORTH); // Button Panel buttonPanel = new JPanel(new GridBagLayout()); buttonPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10)); addButtons(); add(buttonPanel, BorderLayout.CENTER); // Menu Bar JMenuBar menuBar = new JMenuBar(); JMenu fileMenu = new JMenu("File"); JMenuItem exitItem = new JMenuItem("Exit"); exitItem.addActionListener(e -> System.exit(0)); fileMenu.add(exitItem); JMenu editMenu = new JMenu("Edit"); JMenuItem copyItem = new JMenuItem("Copy"); copyItem.addActionListener(e -> StringSelection ss = new StringSelection(displayField.getText()); Toolkit.getDefaultToolkit().getSystemClipboard().setContents(ss, null); ); JMenuItem pasteItem = new JMenuItem("Paste"); pasteItem.addActionListener(e -> try String clipboard = (String) Toolkit.getDefaultToolkit() .getSystemClipboard().getData(java.awt.datatransfer.DataFlavor.stringFlavor); displayField.setText(clipboard); catch (Exception ex) // Ignore ); editMenu.add(copyItem); editMenu.add(pasteItem); JMenu helpMenu = new JMenu("Help"); JMenuItem aboutItem = new JMenuItem("About"); aboutItem.addActionListener(e -> JOptionPane.showMessageDialog(this, "Scientific Calculator v1.0\n\nSupports:\n" + "- Basic arithmetic\n" + "- Trigonometric functions (sin, cos, tan)\n" + "- Inverse trig functions (asin, acos, atan)\n" + "- Logarithmic functions (log, ln)\n" + "- Power and root functions\n" + "- Factorial, percentage\n" + "- Constants (π, e)", "About", JOptionPane.INFORMATION_MESSAGE); ); helpMenu.add(aboutItem); menuBar.add(fileMenu); menuBar.add(editMenu); menuBar.add(helpMenu); setJMenuBar(menuBar);

private double factorial(int n)