Control-Flow Statement Programs in java

Task 1: Day of the Week
Input: Number (1–7)
Output: Day name
Example :
1 → Monday
2 → Tuesday
...
7 → Sunday

Program

import java.util.Scanner;
class Main {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int num=sc.nextInt();
        switch(num){
            case 1:{
                System.out.println("Monday");
                break;
            }
            case 2:{
                System.out.println("Tuesday");
                break;
            }
            case 3:{
                System.out.println("Wednesday");
                break;
            }
            case 4:{
                System.out.println("Thursday");
                break;
            }
            case 5:{
                System.out.println("Friday");
                break;
            }
            case 6:{
                System.out.println("Saturday");
                break;
            }
            case 7:{
                System.out.println("Sunday");
                break;
            }
}
}
}

Output:

4
Thursday

---

Task 2: Vowel Checker
Input: A character
Output: Vowel or Consonant
Example:
Input:a
Output:Vowel

Program

class Main {
    public static void main(String[] args) {
        char alp='e';
        if(alp=='a'||alp=='e'||alp=='i'||alp=='o'||alp=='u'||alp=='A'||alp=='E'||alp=='I'||alp=='O'||alp=='U'){
            System.out.println("Vowel");
        }
        else{
            System.out.println("Consonant");
        }

    }
}

Output

Vowel

Task 3: Traffic Light System
Input: Color (red, yellow, green)
Output: Action
Example :
Red → Stop
Yellow → Ready
Green → Go

Program

class Main {
    public static void main(String[] args) {
        String color="green";
        if(color.equals("red")){
            System.out.println("Stop");
        }
        else if(color.equals("yellow")){
            System.out.println("Ready");
        }
        else if(color.equals("green")){
            System.out.println("Go");
        }

    }
}

Output

Go