This program inputs letter grades for 20 students in the class then prints out stars representing the number of students who received each grade. For example if there were 3 A's, 2 B's, 10 C's, 4 D's and 1 F the output would be

A: *** B: ** C: ********** D: **** F: * 

import java.util.Scanner;

public class Number2 {

public static void main(String[] args) { Scanner keyboard = new Scanner(System.in); System.out.println("Enter 20 letter grades"); String grade; int numA=0, numB=0, numC=0, numD=0, numF=0; for (int i=0; i<20; i++) { grade=keyboard.next(); grade=grade.toUpperCase(); grade=grade.substring(0,1); switch(grade) {case "A": numA++;break; case "B":numB++;break; case "C":numC++;break; case "D":numD++;break; case "F":numF++;break; } } printStars(numA, numB, numC, numD, numF); } }