View difference between Paste ID: R7dxLCkS and H5vnfx3k

-public class mod8slide34
+import java.util.Scanner;
-{
+
-    public static void main (String [] args)
+public class Mod10Slide26 {
-    {
+
-        Scanner k = new Scanner (System.in);
+	public static void main(String[] args) {
-        double grade = 0;
+
-        System.out.print ("Enter the grade: ");
+		Scanner k = new Scanner(System.in);
-        grade = k.nextDouble();
+		ArrayList<String> calls = new ArrayList<String>();
-        if (isValidGrade(grade))
+
-        {
+		int option;
-            System.out.println (grade + " is a valid grade.");
+		String input = "";
-        }
+
-        else
+		System.out.println("Call Center System\n\n");
-        {
+		System.out.println("1) Add a number");
-            System.out.println (grade + " is out of range.");
+		System.out.println("2) Retrieve next number");
-        }
+		System.out.println("3) Show all numbers waiting for callback");
-    }
+		System.out.println("4) Exit");
-    public static boolean isValidGrade (double grade)
+		System.out.print("Enter your option: ");
-    {
+		option = Integer.parseInt(k.nextLine());
-        boolean r
+
-	if (grade >= 0 || grade <= 100) {
+		while (option != 4) {
-		r = true;
+			switch (option) {
 				case 1:
-	else {
+					System.out.printf("Enter callback #: ");
-		r = false;
+					input = k.nextLine();
 					calls.add(input);
-	return r;
+					break;
-    }
+				case 2:
 					String nextCall = calls.get(0);
 					calls.remove(0);
 					System.out.printf("Next phone number to call: %s\n", nextCall);
 					break;
 				case 3:
 					System.out.println("Callback list\n");
 					System.out.printf("%8s %12s\n", "Position", "Number");
 
 					for (int i = 0; i < calls.size(); i++) {
 						System.out.printf("%-8d %12s\n", i + 1, calls.get(i));
 					}
 					System.out.println();
 					break;
 			}
 			System.out.println("Call Center System\n\n");
 			System.out.println("1) Add a number");
 			System.out.println("2) Retrieve next number");
 			System.out.println("3) Show all numbers waiting for callback");
 			System.out.println("4) Exit");
 			System.out.print("Enter your option: ");
 			option = Integer.parseInt(k.nextLine());
 		}
 	}
 }