Level 1 Tasks-(Java)

 

🟢 Level 1 – (Basics: Conditions & Loops)

1. Bus Ticket Counter

Story:
A conductor issues tokens to passengers. Each passenger must get a number in sequence.
Why: Helps students learn loops.
Logic:

• Input: number of passengers.
• Use for loop to print numbers 1 to n.
• Extension: use if inside loop to print only even tokens.

Code :

import java.util.Scanner;

public class BusTokens

{

    public static void main(String[] args) 

    {

        Scanner sc = new Scanner(System.in);

        System.out.print("Enter number of passengers: ");

        int n = sc.nextInt();

        System.out.println("All Tokens:");

        for (int i = 1; i <= n; i++) 

        {

            System.out.print(i + " ");

        }

        System.out.println("\nEven Tokens:");

        for (int i = 1; i <= n; i++)

         {

            if (i % 2 == 0) 

            {

                System.out.print(i + " ");

            }

        }

    }

}

Output :

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2. Shop Discount Calculator

Story:
A shop applies discounts depending on bill amount.
Why: Introduces if-else conditions.
Logic:

• Input: bill amount.
• If bill < 1000 → apply 10%.
• Else → apply 20%.
• Final price = bill - discount.

Code :

import java.util.Scanner;

class bill {

  public static void main(String[] args) 

  {

    Scanner sc = new Scanner(System.in);

    System.out.println("Enter your Bill value");

    int bill = sc.nextInt();

    double discount;

    if(bill < 1000) discount = bill*0.10;

    else discount = bill*0.20;

    double finalPrice = bill - discount;

    System.out.println("Bill=" + bill);

    System.out.println("Discount=" + discount);

    System.out.println("Final Price=" + finalPrice);

  }

}

Output :

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3. School Attendance

Story:
Class teacher records attendance as "P" for present, "A" for absent.
Why: Helps in counting characters in a string.
Logic:

• Input: string like "PAPAPPPAA".
• Loop through string → count P and A.
• Print "Present = X, Absent = Y".

Code :

import java.util.Scanner;

class attendance 

{

  public static void main(String[] args)

   {

    Scanner sc = new Scanner(System.in);

    System.out.print("Enter your attendance (Ex:Present=P,Absent=A)\t:\t");

    String s = sc.next();

    int p=0,a=0;

    for(int i=0;i<s.length();i++)

    {

      char c = s.charAt(i);

      if(c=='P') p++;

      else if(c=='A') a++;

    }  

    System.out.println("Present=" + p);

    System.out.println("Absent=" + a);

  }

}

Output :

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4. Village Water Tank

Story:
A water tank has limited supply. Villagers want to know how long it lasts.
Why: Good for division and loop thinking.
Logic:

• Input: capacity (100 liters), daily usage.
• Days = capacity / dailyUsage.
• Remainder = leftover water.

Code :

import java.util.Scanner;

public class WaterTank 

{

  public static void main(String[] args) 

  {

    Scanner sc = new Scanner(System.in);

    System.out.print("Tank capacity (liters): ");

    int capacity = sc.nextInt();

    System.out.print("Daily usage (liters/day): ");

    int usage = sc.nextInt();

    if (usage <= 0) 

    {

      System.out.println("Daily usage must be > 0");

    } else {

      int days = capacity / usage;

      int remainder = capacity % usage;

      System.out.println("Tank will last for " + days + " full days.");

      System.out.println("Leftover water = " + remainder + " liters.");

    }

    sc.close();

  }

}

Output :

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5. Multiplication Game

Story:
A student practices multiplication tables.
Why: Introduces simple loops.
Logic:

• Input: number (say 7).
• Loop from 1 to 10 → print 7 x i = result.

Code :

import java.util.Scanner;

public class MultiplicationTable 

{

  public static void main(String[] args) 

  {

    Scanner sc = new Scanner(System.in);

    System.out.print("Enter number: ");

    int n = sc.nextInt();

    for (int i = 1; i <= 16; i++) 

    {

      System.out.println(i + " x " + n + " = " + (n * i));

    }

    sc.close();

  }

}

Output :