Thread: programs reads file and prints runs of the same numbers in the form (number of times * number)

so i need the program to read a file with a list of ints, if there are consecutive equal numbers, such as 10 20 20 20 20 30 30 ... 0, the output should be
(1 * 10)
(4 * 20)
(2 * 30)
etc, and it will end when a zero is reached

however im getting an error due to my else if statement and i dont know why?
can anyone help?

would an arraylist make i easier?

[highlight = Java]
import java.util.*;
import java.io.*;

public class Proj57015 {

public static void main (String [] args) throws FileNotFoundException{
System.out.println("");
System.out.println("CMSC 255 - Proj#5 - Jimmy Whitten");

String filename = args[0];
System.out.println("Data File: " + filename);
System.out.println("");
Scanner filescan = new Scanner(new File(filename));

int num1 = filescan.nextInt();
int count = 0;

while (filescan.hasNext()){
if (num1 == filescan.nextInt())
count++;
else if (num1 != filescan.nextInt())
num1 = filescan.nextInt();

}
System.out.println("(" + count + "*" + num1 + ")");


}
}
[/highlight]

--- Update ---

error is:
exception in thread "main" java.util.NoSuchElementException
at java.util.Scanner.throwFor(Unknown Source)
at java.util.Scanner.next(Unknown Source)
at java.util.Scanner.nextInt(Unknown Source)
at java.util.Scanner.nextInt(Unknown Source)
at Proj57015.main(Proj57015.java:27)

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