Java Practice Set 4

QUESTIONS ---

SOLUTIONS/CODE ---

package com.company;
import java.util.Scanner;

public class PS4 {
    public static void main(String[] args) {

/* Q1 - What will be the output of this program:
        int a = 10;
        if (a=11){
               System.out.println("I am 11");
        }
        else{
             System.out.println("I am not 11");
        }
  ANSWER - This will simply throw an error because, in if statement,  we used '=' as an assignment operator
            to run the program correctly, we should have use a logical operator '=='     */

/* Q2 - Write a program to find out to whether a student is pass or fail;
        To pass it requires 40% of total marks and 33% marks of each subjects
        Assume 3 subjects and take marks as an input from the user              */
        byte s1, s2, s3;
        Scanner sc = new Scanner(System.in);

        System.out.println("Enter your marks in Physics");
        s1 = sc.nextByte();
        System.out.println("Enter your marks in Chemistry");
        s2 = sc.nextByte();
        System.out.println("Enter your marks in Mathematics");
        s3 = sc.nextByte();

        float avg = (s1+s2+s3)/3.0f;
        System.out.println("Your overall percentage is: " + avg);
        if (avg>=40 && s1>=33 && s2>=33 && s3>=33){
            System.out.println("Congratulations! You have been PROMOTED");
        }
        else{
            System.out.println("Sorry! You haven't been Promoted. Please do better next time");
        }

/* Q3 - Calculate income tax paid by an employee to the government as per the slabs mentioned below:
        Income Slab     Tax
        2.5L-5.0L       5%
        5.0L-10.0L      20%
        Above 10.0L     30%
    Note - There is no tax below 2.5 lakhs. Take income as an input from the user.                */
        Scanner sc2 = new Scanner(System.in);
        System.out.println("Enter Your Income in Lakhs/anum");
        float tax = 0;
        float income = sc2.nextFloat();
        if (income<2.5){
            tax = tax +0;
        }
        else if (income>=2.5f && income<=5.0f){
            tax = tax + 0.05f * (income - 2.5f);
        }
        else if (income>5.0f && income<=10.0f){
            tax = tax + 0.05f * (5.0f - 2.5f);
            tax = tax + 0.2f * (income - 2.5f);
        }
        else if (income>10.0f){
            tax = tax + 0.05f * (5.0f - 2.5f);
            tax = tax + 0.2f * (10.0f - 5.0f);
            tax = tax + 0.3f * (income - 10f);
        }
        System.out.println("The Total Tax have to paid by this employee is: " + tax + " Lakhs");

/* Q4 - Write a java program to find out the day by the given number----
[1 for Monday, 2 for Tuesday......and so on]        */
        Scanner sc3 = new Scanner(System.in);
        int day = sc3.nextInt();
        switch (day) {
            case 1 -> System.out.println("Monday");
            case 2 -> System.out.println("Tuesday");
            case 3 -> System.out.println("Wednesday");
            case 4 -> System.out.println("Thursday");
            case 5 -> System.out.println("Friday");
            case 6 -> System.out.println("Saturday");
            case 7 -> System.out.println("Sunday");
        }
/* Q5 - Write a java program to find whether a year entered by the user is Leap year or not*/

/* Q6 - Write a program to find out the type of website fro m their URL ---
        .com - Commercial Website
        .org - Organization Website
        .in - Indian Website                    */
        Scanner sc4 = new Scanner(System.in);
        String str = sc4.next();
        if (str.endsWith(".org")){
            System.out.println("This is a Organizational Website");
        }
        else if (str.endsWith(".com")){
            System.out.println("This is Commercial Website");
        }
        else if (str.endsWith(".in")){
            System.out.println("This is Indian Website");
        }
    }
}