Java Help

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179KB, 426x422px

I'm teaching myself Java and this is an error I've never gotten before, because it's something I thought I had mastered.

import java.util.*;

public class StudentApp {

public static void main(String[] args){
int CLTOT = 225;
int EXAMTOT = 150;
int FTOT = 100;
int LABS;
int PROJ;

Scanner s = new Scanner(System.in);
Student builder = new Student();
Student[] classScore = new Student[50];
Student.studentScores();
System.out.println("");
boolean run = true;
int counter = 0;

do{
System.out.print("Enter student's name (firstname lastname): ");
String name = s.nextLine();
System.out.println("Enter student's WID: ");
String id = s.nextLine();
System.out.println("");
System.out.println("Enter student's total for all LABS: ");
double ltot = Double.parseDouble(s.nextLine());
System.out.println("Enter student's total for all PROJECTS: ");
double ptot = Double.parseDouble(s.nextLine());
System.out.println("Enter student's total for all CODELAB: ");
double ctot = Double.parseDouble(s.nextLine());
System.out.println("Enter student's total for the 3 CLASS EXAMS: ");
double etot = Double.parseDouble(s.nextLine());
System.out.println("Enter student's total for the FINAL EXAM: ");
double ftot = Double.parseDouble(s.nextLine());

classScore[counter] = new Student(name, id, ltot, ptot, ctot, etot, ftot);
counter++;

System.out.println(counter + "Student(s) entered so far.");
System.out.println("Up to 50 students can be entered.");
System.out.println("Would you like to enter another student? ('Y' or 'N'): ");

char response = s.nextLine().charAt(0);

switch(response){
case 'Y':
case 'y':
if(counter <= 50){
run = true;
}
else{
run = false;
}
break;
case 'N':
case 'n':
run = false;
break;
}
}while(run);
}
}

I'm getting an error at my do-while, after the first print. The scanner isn't finding a line and idk why.