Java Console Calculator — v2.0 :)

A fully functional, menu-driven Scientific Calculator built in Java, designed for console execution.
This calculator performs arithmetic, trigonometric, logarithmic, factorial, and range operations, now upgraded with advanced mathematical features in Version 2.0.

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Features

Core Arithmetic

• Addition, Subtraction, Multiplication, Division, Modulus

Powers & Roots

• Squares and Cubes
• Square Roots and Cube Roots
• Exponentiation (a^b, b^a)
• Exponential (e^x)

Trigonometric Functions

• sin, cos, tan (in degrees)
• Inverse Trigonometric (asin, acos, atan → in degrees)
• Hyperbolic Trigonometric (sinh, cosh, tanh)

Logarithmic Functions

• Natural Log (ln)
• Common Log (log₁₀)
• Logarithm with Custom Base

Factorials & Range

• Factorial of a number
• Range Sum and Average between two numbers

Utility & Misc

• Absolute Values (|a|, |b|)
• Percentage Calculation (a% of b)
• GCD (Greatest Common Divisor) and LCM (Least Common Multiple)

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Usage

Compile and Run

javac src/*.java
java src.CalculatorApp

Follow the on-screen menu to perform desired operations interactively.

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Example

Enter first number: 5
Enter second number: 3

Choose operation:
1: Addition (+)
2: Subtraction (-)
...
21: GCD and LCM

1
Sum = 8

Do you want to continue? (y/n): n
Thank you for using the calculator. Bye!

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Notes

• Factorials are limited to values fitting within long.
• Logarithms are valid only for positive inputs.
• Division/modulus by zero is safely handled.
• Inverse trigonometric functions are valid only for a ∈ [-1, 1].
• Log base must be positive and ≠ 1.
• Output precision rounded to 4 decimal places.

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New in v2.0

Added 8 new functions to make your calculator more powerful and professional.

| Category | New Feature | Description | |-----------|-------------|-------------| | Math | Absolute Value | Returns |a| and |b| | | Root | Cube Root | Finds ∛a and ∛b | | Exponential | eˣ | Calculates e raised to x | | Trig | Inverse Trig | asin, acos, atan (in degrees) | | Trig | Hyperbolic Trig | sinh, cosh, tanh | | Logs | Custom Base Log | log₍base₎(a) | | Percent | Percentage | Finds a% of b | | Number Theory | GCD & LCM | Calculates both using Euclid’s algorithm |

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Planned v3.0 Features (Coming Soon 🚧)

• Statistical Functions (mean, median, mode, standard deviation)
• Number System Conversions (Binary ↔ Decimal ↔ Hex ↔ Octal)
• Unit Conversions (Temperature, Length, Mass, Time)
• Prime Checker + LCM for multiple inputs
• History and Memory Functions (M+, M–, MR, MC)
• Expression Parser to evaluate (2+3)*sin(30)
• (Future) JavaFX GUI Edition

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Author

Saswat
First-Year Student @ IARE
📂 GitHub: Saswat-Iare25
💬 “Learning by Building — One Program at a Time.”

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