package first;
import java.util.Scanner;


public class firstcode {

	public static void main(String[] args) {
		System.out.print("Enter age: ");
		Scanner sc = new Scanner(System.in);
		int uinput = sc.nextInt();
		if (uinput < 18  ) {
			System.out.println("You're Under Aged");
		}
		else {
		System.out.println("You're Allowed");
		}
	}

}


package first;
import java.tils.Scanner;

public class loop {

	public static void main(String[] args) {
		int n = 5;
		Scanner sc = new scanner.
		String name = "John";
		int length = name.length();
		for (int i = 1; i <= length; ++i) {
			System.out.println(i);
		}

	}

}


package first;

public class switchtest {

	public static void main(String[] args) {
		int score = 20;
				switch (score) {
				case 10:
					System.out.println("Matched");
					break;
				case 20:
					System.out.println("Not matched");
					break;
				default:
					System.out.println("Unknown");
					break;
				}
	}

}