public class ForTest {

    public static void main(String args[]){

        int [] numbers = {1, 3, 5, 7, 2, 4, 6, 8};

        for (int x: numbers){

            System.out.print(x);

            System.out.print(",");

        }

        System.out.println();

        String [] names = {"Jihite", "David", "Tom"};

        for (String name: names){

            System.out.print(name);

            System.out.print(',');

        }

    }

}

1,3,5,7,2,4,6,8,

Jihite,David,Tom,

public class ForTest {

    public static void main(String args[]){

        //char grade = args[0].charAt(0);

        char grade = 'B';

        switch(grade)

        {

            case 'A' :

                System.out.println("Excellent!");

                break;

            case 'B' :

            case 'C' :

                System.out.println("Well done");

                break;

            case 'D' :

                System.out.println("You passed");

            case 'F' :

                System.out.println("Better try again");

                break;

            default :

                System.out.println("Invalid grade");

        }

        System.out.println("Your grade is " + grade);

    }

}