Here we will discuss the different types of switch statement programs for practices. You can simply try these programs on your end also. switch statement programs for practices:
switch statement programs for practices
1. Write a Java program that takes input from the user and uses a switch statement to perform different actions based on the user’s input.
import java.util.Scanner;
public class UserInputSwitch {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please enter a number between 1 and 4:");
int number = input.nextInt();
switch (number) {
case 1:
System.out.println("You entered 1.");
break;
case 2:
System.out.println("You entered 2.");
break;
case 3:
System.out.println("You entered 3.");
break;
case 4:
System.out.println("You entered 4.");
break;
default:
System.out.println("Invalid input. Please enter a number between 1 and 4.");
break;
}
}
}
2. Write a java program that uses a switch statement to print the name of the month corresponding to a given integer value.
import java.util.Scanner;
public class MonthName {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please enter a month number (1-12):");
int month = input.nextInt();
String monthName;
switch (month) {
case 1:
monthName = "January";
break;
case 2:
monthName = "February";
break;
case 3:
monthName = "March";
break;
case 4:
monthName = "April";
break;
case 5:
monthName = "May";
break;
case 6:
monthName = "June";
break;
case 7:
monthName = "July";
break;
case 8:
monthName = "August";
break;
case 9:
monthName = "September";
break;
case 10:
monthName = "October";
break;
case 11:
monthName = "November";
break;
case 12:
monthName = "December";
break;
default:
monthName = "Invalid month";
break;
}
System.out.println("You entered " + monthName);
}
}
3. Write a java program that takes a grade letter from the user (A, B, C, D, or F) and prints the corresponding GPA value
import java.util.Scanner;
public class GradePointAverage {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please enter a grade letter (A, B, C, D, or F):");
String grade = input.next().toUpperCase();
double gpa;
switch (grade) {
case "A":
gpa = 4.0;
break;
case "B":
gpa = 3.0;
break;
case "C":
gpa = 2.0;
break;
case "D":
gpa = 1.0;
break;
case "F":
gpa = 0.0;
break;
default:
gpa = -1.0;
break;
}
if (gpa == -1.0) {
System.out.println("Invalid grade letter");
} else {
System.out.println("Your GPA is " + gpa);
}
}
}
4. Write a java program that takes a day of the week from the user (1-7) and prints a corresponding message
import java.util.Scanner;
public class DayOfWeek {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please enter a day of the week (1-7):");
int day = input.nextInt();
String message;
switch (day) {
case 1:
message = "It's Monday!";
break;
case 2:
message = "It's Tuesday!";
break;
case 3:
message = "It's Wednesday!";
break;
case 4:
message = "It's Thursday!";
break;
case 5:
message = "It's Friday!";
break;
case 6:
message = "It's Saturday!";
break;
case 7:
message = "It's Sunday!";
break;
default:
message = "Invalid day of the week";
break;
}
System.out.println(message);
}
}
5. Write a java program that converts a numeric grade into a letter grade based on a standard grading scale
import java.util.Scanner;
public class GradeConverter {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please enter a numeric grade (0-100):");
int grade = input.nextInt();
String letterGrade;
switch (grade / 10) {
case 10:
case 9:
letterGrade = "A";
break;
case 8:
letterGrade = "B";
break;
case 7:
letterGrade = "C";
break;
case 6:
letterGrade = "D";
break;
default:
letterGrade = "F";
break;
}
System.out.println("Your letter grade is " + letterGrade);
}
}
6. Write a java program that calculates the total cost of an order based on the number of items and a per-item cost that varies depending on the type of item
import java.util.Scanner;
public class OrderCalculator {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please enter the quantity of items in your order:");
int quantity = input.nextInt();
System.out.println("Please enter the type of item in your order (1-3):");
int itemType = input.nextInt();
double itemCost;
switch (itemType) {
case 1:
itemCost = 5.0;
break;
case 2:
itemCost = 10.0;
break;
case 3:
itemCost = 15.0;
break;
default:
System.out.println("Invalid item type. Using default cost of $10.0");
itemCost = 10.0;
break;
}
double totalCost = quantity * itemCost;
System.out.println("Your total cost is $" + totalCost);
}
}
7. Write a java program that determines the number of days in a given month and year
import java.util.Scanner;
public class DaysInMonth {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please enter a month (1-12):");
int month = input.nextInt();
System.out.println("Please enter a year:");
int year = input.nextInt();
int numDays;
switch (month) {
case 2:
if ((year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0)) {
numDays = 29;
} else {
numDays = 28;
}
break;
case 4:
case 6:
case 9:
case 11:
numDays = 30;
break;
default:
numDays = 31;
break;
}
System.out.println("There are " + numDays + " days in that month.");
}
}