🎓 Java Basics – Quick Reference

A tiny collection of beginner Java programs that cover the essentials: arithmetic, logic, loops, and arrays.
All programs are self-contained, compile with javac <File>.java, and run via command-line arguments where needed.

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🚀 Quick Start

# Compile any file
javac <File>.java

# Run (examples)
java Sum
java OddEven 17
java SimpleInterest 2000 5 3


| #  | File                | Purpose                                                    | How to Run                     |
|----|---------------------|------------------------------------------------------------|--------------------------------|
| 1  | `sum.java`          | Adds two hard-coded integers and prints the result.        | `java sum`                     |
| 2  | `dynamic_int.java`  | Calculates simple interest from CLI args: `P R T`.         | `java dynamic_int 1000 5 2`    |
| 3  | `swap.java`         | Swaps two hard-coded integers using a temp variable.       | `java swap`                    |
| 4  | `area_circle.java`  | Displays area of a circle (hard-coded radius).             | `java area_circle`             |
| 5  | `dynamic_odd_even.java` | Tells if the CLI arg is odd or even.                   | `java dynamic_odd_even 42`     |
| 6  | `value.java`        | Compares two CLI numbers with an else-if ladder.           | `java value 12 9`              |
| 7  | `marksheet.java`    | Computes total, average, and grade for 3 CLI marks.        | `java marksheet 85 92 78`      |
| 8  | `minimum.java`      | Finds the smallest of 3 CLI numbers.                       | `java minimum 12 7 25`         |
| 9  | `int.java`          | Prints square of the larger CLI arg or cube of the smaller.| `java int 5 3`                 |
| 10 | `table.java`        | Prints the multiplication table (1–10) of the CLI arg.     | `java table 7`                 |
| 11 | `Fibonacci.java`    | Lists Fibonacci numbers up to the CLI limit.               | `java Fibonacci 50`            |
| 12 | `factorial.java`    | Computes factorial of the CLI arg.                         | `java factorial 5`             |

Repo Structure

Basic-Java/
  Fibonacci.java
  Create area_circle.java
  dynamic_int.java
  dynamic_odd_even.java
  factorial.java
  int.java	
  marksheet.java
  minimum.java
  odd_even.java
  sum.java
  Create sum.java
  swap.java
  table.java
  value.java
  readme.md <- You are here