//Converts a numerical grade into a letter grade using a switch-case statement.
import java.util.Scanner;
public class GradeConverter {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter your numerical grade (0-100): ");
int grade = scanner.nextInt();
char 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';
}
System.out.println("Your letter grade is: " + letterGrade);
scanner.close();
}
}
public class TrafficLights {
// Declare the enum outside the main method
enum TrafficLightColor { RED, YELLOW, GREEN }
public static void main(String[] args) {
TrafficLightColor color = TrafficLightColor.GREEN;
switch (color) {
case RED:
System.out.println("Stop!");
break;
case YELLOW:
System.out.println("Prepare to stop.");
break;
case GREEN:
System.out.println("Go!");
break;
default:
System.out.println("Invalid light color.");
break;
}
}
}
import java.util.Scanner;
//MenuOrder
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int choice;
System.out.println("Welcome to the Cafe!");
System.out.println("Please select an item from the menu:");
System.out.println("1. Coffee");
System.out.println("2. Tea");
System.out.println("3. Sandwich");
System.out.println("4. Salad");
System.out.println("5. Exit");
choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.println("You ordered Coffee.");
break;
case 2:
System.out.println("You ordered Tea.");
break;
case 3:
System.out.println("You ordered a Sandwich.");
break;
case 4:
System.out.println("You ordered a Salad.");
break;
case 5:
System.out.println("Exiting the menu. Thank you!");
break;
default:
System.out.println("Invalid choice. Please select a valid menu item.");
break;
}
scanner.close();
}
}
