Juggling

import java.util.Scanner;
import java.io.*;

public class Juggling {
	public static void main (String [] args) {

		Scanner input = new Scanner(System.in);
		String[] names = new String[30];
		char asterisk = '*';
		int total = 0;


		System.out.println("Input the names of the students. End with a *");
		for(int i = 0; i <= 30; i++){
			names[i] = input.nextLine();

			if(asterisk == names[i].charAt(0)){
				break;
			}
		}

		int[] grades = new int[30];
		System.out.println("Input the grades now");
		for(int j = 0; j <= 30; j++){
			if(asterisk == names[j].charAt(0)){
				break;
			}
			
			else{
				grades[j] = input.nextInt();
				total = j + 1;
			}	
		}

		for(int x = 0; x <= 30; x++){
			
			if(asterisk == names[x].charAt(0)){
				break;
			}


			else{
				System.out.println("The student " + names[x] + " got a score of: " + grades[x]);
			}

		}
		System.out.println("The total amount of students is of: " + total);

		int largest = grades[0]; 
		for(int y = 0; y < grades.length; y++){ 
			if(grades[y]>largest){ 
				largest = grades[y]; 
			}
		}

		System.out.println("The highest score was of: " + largest);
		System.out.println("People who got that score were: " );
		for(int z = 0; z < grades.length; z++){ 
			if(grades[z] == largest){ 
				System.out.println(names[z]);
			}
		}

	}
}