private double evaluateExpression(String expression) return new ExpressionEvaluator().evaluate(expression);
@echo off echo Compiling Scientific Calculator... javac -d bin src/*.java if %errorlevel%==0 ( echo Compilation successful! echo Running Calculator... java -cp bin ScientificCalculator ) else ( echo Compilation failed! ) pause
public void clear() memory = 0;
public void setAngleMode(boolean degree) this.degreeMode = degree;
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", "∛", "1/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 scientific calculator source code in java free download
# 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.
private double factorial(int n) n == 1) return 1; double result = 1; for (int i = 2; i <= n; i++) result *= i; return result; java -cp bin ScientificCalculator ) else ( echo
public String calculateUnary(String operation, String value, boolean isDegree) try double num = Double.parseDouble(value); double result = 0; switch (operation) ": result = Math.abs(num); break; case "floor": result = Math.floor(num); break; case "ceil": result = Math.ceil(num); break; case "!": result = factorial((int) num); break; case "%": result = num / 100; break; case "π": result = Math.PI; break; case "e": result = Math.E; break; case "rand": result = Math.random(); break; return String.valueOf(result); catch (Exception e) return "Error";