Need help with some simple code

Question

Hi,
I'm doing a lab for a class I'm taking and for the most part my code is working properly. It is supposed to accept inputs from the user of ints, doubles, or strings using the Scanner class until the user inputs "quit". It stores each input in array lists of class Integer, Double, and String. It the prints out each element of these in a list and quits the program. The problem is that after I query the user for input, if an int or double is input, the program then requires an input again before it will continue querying. So my question is how do I get it to query only once?
The code and a copy of what it IS doing, and what it SHOULD do are shown below in bold.
import java.util.ArrayList;
import java.util.Scanner;
import java.lang.Integer;
import java.lang.Double;
import java.lang.String;
public class inputsort
public static void main()
int n = 0;
boolean done = false;
String quit;
Scanner sc = new Scanner(System.in);
ArrayList<Integer> intList = new ArrayList<Integer>();
ArrayList<Double> doubList = new ArrayList<Double>();
ArrayList<String> stringList = new ArrayList<String>();
while(!done)
System.out.print("Enter an int, double, any random text, or type quit to end: ");
*if (sc.hasNextInt()){*
intList.add(sc.nextInt());
sc.next();
*} else if (sc.hasNextDouble()){*
doubList.add(sc.nextDouble());
sc.next();
*} else {*               
quit = sc.next();
*if (quit.equals("quit")) {*
done = true;
*else {*
stringList.add(quit);
System.out.println("Integers:");
while(n < intList.size())
System.out.print("Integer[" + n + "]: ");
System.out.print(intList.get(n) + "\n");
n += 1;
n = 0;
System.out.println("Doubles:");
while(n < doubList.size())
System.out.print("Double[" + n + "]: ");
System.out.print(doubList.get(n) + "\n");
n += 1;
n = 0;
System.out.println("Others:");
while(n < stringList.size())
System.out.print("Other[" + n + "]: ");
System.out.print(stringList.get(n) + "\n");
n += 1;
Here's what it IS doing:
Enter an int, double, any random text, or type quit to end: 10
*10*
Enter an int, double, any random text, or type quit to end: 1.2
*1.2*
Enter an int, double, any random text, or type quit to end: 3.4
*3.4*
Enter an int, double, any random text, or type quit to end: 5.6
*5.6*
Enter an int, double, any random text, or type quit to end: test
Enter an int, double, any random text, or type quit to end: monkey
Enter an int, double, any random text, or type quit to end: quit
Integers:
Integer[0]: 5
Integer[1]: 10
Doubles:
Double[0]: 1.2
Double[1]: 3.4
Double[2]: 5.6
Others:
Other[0]: test
Other[1]: monkey
Here is what it SHOULD be doing:
Enter an int, double, any random text, or type quit to end: 10
Enter an int, double, any random text, or type quit to end: 1.2
Enter an int, double, any random text, or type quit to end: 3.4
Enter an int, double, any random text, or type quit to end: 5.6
Enter an int, double, any random text, or type quit to end: test
Enter an int, double, any random text, or type quit to end: monkey
Enter an int, double, any random text, or type quit to end: quit
Integers:
Integer[0]: 5
Integer[1]: 10
Doubles:
Double[0]: 1.2
Double[1]: 3.4
Double[2]: 5.6
Others:
Other[0]: test
Other[1]: monkey
Any help is greatly appreciated!!!
Thanks!
Edited by: sublimeph03nix on Jan 21, 2009 7:24 PM

Answer 1

My professor told me to add sc.next(); because she said when you hit return its reads that in the scanner class too, so it's kinda to clear the buffer I think, I wasn't really sure. It changes nothing on the front end if I remove it.
As for the thing, it wont let me edit for some reason.  I'll try again in a bit.