POLYSOLVE

Polynomial & calculas Calculator — a Java Swing desktop application built with a clean MVC (Model-View-Controller) architecture.

POLYSOLVE lets you type polynomials in natural form (e.g. 3x^2+2x+1) and perform algebra (add, subtract, multiply) and calculus (evaluate, differentiate, integrate, definite integral) on them through a simple two-tab GUI.

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Features

• Algebra:- add, subtract, multiply two polynomials
• Calculus:-
  • Evaluate a polynomial at a given x
  • Differentiate (d/dx)
  • Indefinite integral (with a custom constant C)
  • Definite integral over [a, b]
• Accepts natural expressions (3x^2+2x+1) or comma-separated coefficients (3,2,1)
• Friendly inline error messages for invalid input — no crashes
• Clean, single-purpose classes following MVC separation

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Architecture (MVC)

com.polysolve
├── Main.java                     entry point
├── model/
│   ├── Polynomial.java           pure math: add, subtract, multiply,
│   │                             evaluate, differentiate, integrate
│   └── PolynomialParser.java     turns typed text into a Polynomial
├── view/
│   ├── MainFrame.java            top-level window, header + tabs
│   ├── AlgebraPanel.java         add / subtract / multiply UI
│   ├── CalculusPanel.java        evaluate / differentiate / integrate UI
│   └── Theme.java                shared colors and fonts
└── controller/
    └── PolySolveController.java  mediates between View and Model

Design Principles

• Model (model/) has zero Swing imports — it is pure, testable math logic.
• View (view/) has zero math logic — it only builds UI and reads/writes text fields.
• Controller (controller/) is the only class both sides depend on, keeping the two layers decoupled.

See docs/UML_Class_Diagram.png for the full class relationship diagram.

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Running the project

Option 1: Visual Studio Code (Recommended)

1. Open Visual Studio Code.
2. Select File → Open Folder and choose the POLYSOLVE directory.
3. Ensure the Extension Pack for Java is installed. VS Code will automatically detect the pom.xml file and import the project as a Maven project.
4. Open Main.java and click Run (or right-click → Run Java).

Option 2: Command line (with Maven)

mvn clean package
java -jar target/polysolve.jar

Option 3: Command line (plain javac, no Maven)

cd src/main/java
javac com/polysolve/Main.java com/polysolve/model/*.java com/polysolve/view/*.java com/polysolve/controller/*.java -d ../../../out
cd ../../../out
java com.polysolve.Main

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Input format

Style	Example	Meaning
Natural expression	3x^2+2x+1	3x² + 2x + 1
Natural expression	x^3-x	x³ − x
Comma-separated	3,2,1	3x² + 2x + 1 (highest degree first)

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Authors

• Siddharth Chandra (Reg. No. 12411518)
• Aman Raj (Reg. No. 12416152)

B.Tech Computer Science & Engineering
Lovely Professional University

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Project Structure

POLYSOLVE
├── src/
│   ├── main/
│   │   ├── java/
│   │   └── resources/
│   └── test/
├── docs/
│   └── UML_Class_Diagram.png
├── pom.xml
└── README.md

License

Built as an academic coursework project. Free to reuse and extend for learning purposes.