Chapter 4– Practice Set Questions and Answers On Conditionals & Switch Case

Chapter 4– Practice Set

1. 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”);

2. Write a program to find out whether a student is pass or fail; if it requires total 40% and at least 33% in each subject to pass. Assume 3 subjects and take marks as an input from the user.

3. 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 that there is not tax below 2.5L. Take the input amount as input from the user.

4. Write a Java program to find out the day of the week given the number [1 for Monday, 2 for Tuesday … and so on!]

5. Write a Java program to find whether a year entered by the user is a leap year or not.

6. Write a program to find out the type of website from the URL:

.com – commercial website

.org – organization website

.in – Indian website

Code in This Video :

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

public class cwh_19_ch4_ps {
    public static void main(String[] args) {
//        Question 1:
//        int a = 11;
//        if(a=11){
//
//        }

        // Question 2
//        byte m1, m2, m3;
//        Scanner sc = new Scanner(System.in);
//        System.out.println("Enter your marks in Physics");
//        m1 = sc.nextByte();
//
//        System.out.println("Enter your marks in Chemistry");
//        m2= sc.nextByte();
//
//        System.out.println("Enter your marks in Mathematics");
//        m3 = sc.nextByte();
//        float avg = (m1+m2+m3)/3.0f;
//        System.out.println("Your Overall percentage is: " + avg);
//        if(avg>=40 && m1>=33 && m2>=33 && m3>=33){
//            System.out.println("Congratulations, You have been promoted");
//        }
//        else{
//            System.out.println("Sorry, You have not been promoted! Please try again.");
//        }

        // Question 3
//        Scanner sc = new Scanner(System.in);
//        System.out.println("Enter your income in Lakhs per annum");
//        float tax = 0;
//        float income = sc.nextFloat();
//        if(income<=2.5){
//            tax = tax + 0;
//        }
//        else if(income>2.5f && income <= 5f){
//            tax = tax + 0.05f * (income - 2.5f);
//        }
//        else if(income>5f && income <= 10.0f){
//            tax = tax + 0.05f * (5.0f - 2.5f);
//            tax = tax + 0.2f * (income - 5f);
//        }
//        else if(income>10.0f){
//            tax = tax + 0.05f * (5.0f - 2.5f);
//            tax = tax + 0.2f * (10.0f - 5f);
//            tax = tax + 0.3f * (income - 10.0f);
//        }
//
//        System.out.println("The total tax paid by the employee is: " + tax);

//        Question 4:

//        Scanner sc = new Scanner(System.in);
//        int day = sc.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");
//        }

//        Question 6
//        Scanner sc = new Scanner(System.in);
//        String website = sc.next();
//        if(website.endsWith(".org")){
//            System.out.println("This is an organizational website");
//        }
//        else if(website.endsWith(".com")){
//            System.out.println("This is a Commercial website");
//        }
//        else if(website.endsWith(".in")){
//            System.out.println("This is an Indian website");
//        }
    Random r = new Random();
    int a = r.nextInt();
        System.out.println(a);

    }
}

Question 5 Answer in code :

package com.company;
import java.util.Scanner;
public class stringsps {
    public static void main(String[] args) {
        int year;
        System.out.println("Enter the Year :");
        Scanner sc=new Scanner(System.in);
        year=sc.nextInt();
        if(((year%4==0)&&(year%100!=0))||(year%400==0)) {
            System.out.println("Specified year is leap year");
        }
        else{
            System.out.println("Specified year is not a leap year");
        }
    }
}

/*
Enter the Year :
2000
Specified year is leap year

Enter the Year :
1970
Specified year is not a leap year
 */