Thread: Simple problem help!

Hello!

So I'm writing a massive code for a school project at the moment, and while I have all the complicated stuff, I am getting stuck on this simple bit. I'm trying to scan in a text file, a single line of a bunch of characters, then make that file a string, then traverse the string to see if there are any upper case A-G's. My code as it is compiles, and runs, but none of my int counters are going up. Someone this not reading correctly.

Can someone help? This is the last thing I have to do for this

Below is the section of relevant code:

import java.util.*;
import java.io.*;
import javax.swing.JOptionPane;
 
public class test5cop3530{
 
public static void main(String[] args) {
 
BaseObArr array;
array = new BaseObArr(7);
 
//declare counters to record the number of letters A-G
	int a = 0;
	int b = 0;
	int c = 0;
	int d = 0;
	int e = 0;
	int f = 0;
	int g = 0;
 
File input = new File(args[0]); //create a file named input, assign it to the file run with the program
Scanner read;  		//Create a scanner
try
{
read = new Scanner(input);	//wrap a scanner around my input file, call it read
String data = read.next(); //create a string from my file
 
//Traverse the String and count how many times I see and A-G
int i = 0;
while(i < data.length());
{
if(data.charAt(i)=='A')
{
a++;
i++;
}
else if(data.charAt(i)=='B')
{
b++;
i++;
}
else if(data.charAt(i)=='C')
{
c++;
i++;
}
else if(data.charAt(i)=='D')
{
d++;
i++;
}
else if(data.charAt(i)=='E')
{
e++;
i++;
}
else if(data.charAt(i)=='F')
{
f++;
i++;
}
else if(data.charAt(i)=='G')
{
g++;
i++;
}
else
i++;
}
 
}
	catch(Exception ex) {
  ex.printStackTrace();
}
//Check to make sure the values are correct
System.out.print("a is " +a+ "\nb is "+b+"\nc is "+c+"\nd is "+d+"\ne is "+e+"\nf is "+f+"\ng is "+g);
 
...

I did. The string is exactly what I have entered. The problem is, now it's getting stuck in an endless loop. The string class has a .length method, so that shouldn't be the problem.

--- Update ---

Yeah, I'm looking over that while loop...I printed string.length and for my data it's giving me 87. The .charAt() is also reading in correctly. I have increment statements in every portion of my while loop, in all my if statements. I declared the variables outside of the try/catch block so they should retain their values why I reach the end. Where is it getting stuck?

It looks like I'm not even entering the while loop. Why would that happen? I printed the values of k and data.length() just before the while loop and they are correct. That boolean should be true.

...and this is why I shouldn't code for 3 days straight...I'm an idiot.

I got it. Thanks so much for your help!