Handwritten solved Java tasks.

Java Programming Tasks Collection
Cleaned & Formatted Java Practice Programs
Course: Java Programming
Institution: GIFT University
Document Type: Practice Tasks & Code Exercises




Table of Contents
1. Prime Number Checker
2. Seconds to Time Units Converter
3. Word Information Analyzer
4. Area & Perimeter Calculator
5. Character Position Finder
6. User Input & Validation




Task 1 — Prime Number Checker
Description

This program checks whether a number entered by the user is prime or composite.


Java Code


import java.util.Scanner;

public class Task1 {

public static void main(String[] args) {
Scanner input = new Scanner(System.in);

System.out.println("Enter any number:");
int number = input.nextInt();

isPrime(number);
}

public static void isPrime(int number) {




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, if (number < 2) {
System.out.println("Invalid number");
return;
}


int count = 0;

for (int i = 1; i <= number; i++) {
if (number % i == 0) {
count++;
}
}

if (count == 2) {
System.out.println("Prime");
} else {
System.out.println("Composite");
}
}
}




Task 2 — Seconds to Time Units Converter
Description

This program converts seconds into hours, minutes, seconds, and milliseconds.


Java Code


import java.util.Scanner;

public class Task2 {

public static void main(String[] args) {
Scanner input = new Scanner(System.in);

System.out.print("Enter any value: ");
int seconds = input.nextInt();

secondsToTimeUnits(seconds);
}

public static void secondsToTimeUnits(double seconds) {




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