Analyzing a line of a text file

[Ragoune]

Hi,

I'm quite new to Java, but I've already completed an Android project. I now started on a Java project, but an error has been occuring for a long time. I have tried to find the reason, but couldn't succeed. As my last resource I would like to ask you if you know what might go wrong.

I basically have a text file, consisting out of many X and Y points enclosed by square brackets. A name can be added behind the points, but is not always the case. A fragment:

[50599800][526496200][50595100][526503000]Hogerbeetsstraat
[50607053][526488901][50607585][526488173][50601960][526486652][50601426][526487378][50607053][526488901]

As you've probably guessed, I want to read the numbers and additional names into my application. To do this, I've written this relatively small piece of code:

FileReader file = new FileReader("C:\\maps2\\"+i+"\\"+i2+".mada");
					BufferedReader reader = new BufferedReader(file);
					
					while (reader.ready())
					{
						line = reader.readLine();
						line2 = line;
						
						ways[ways_length] = new double[line.replaceAll("[^\\[]", "").length()];
						count = 0;
						while (line.contains("["))
						{
							begin = line.indexOf("[")+1;
							end = line.indexOf("]");
							
							if (line.substring(begin, end).equals("50631700"))
							{
								System.out.println(count);
								System.exit(0);
							}
							ways[ways_length][count] = Double.parseDouble(line.substring(begin, end))/lonlat_multiplier;
							line = line.replace(line.substring(begin-1, end+1), "");
							
							count ++;
						}
						//System.out.println(ways[ways_length].length);
						if (line.length() > 0)
						{
							ways_name[ways_length] = line;
							if (ways_name[ways_length].equals("Metselaarsstraat"))
							{
								System.out.println("<"+ways_length+"|"+ways[ways_length][2]+"|"+ways[ways_length][3]);
								System.out.println(line2);
								System.out.println(ways[ways_length].length);
							}
						}
						
						ways_length ++;
					}
					file.close();
					reader.close();

The initialization of the variables used has been done before.

The problem:
Everything's read correctly, and even displayed correctly (the code for that, I haven't shown). However, at a few lines (each run the same ones) it looks like count remains the same. In other words, the line "count ++;" isn't executed (so it looks).
This is one of the lines where it goes wrong:

[50631700][526503000][50631700][526502500][50634600][526498599][50635400][526498500][50639500][526499800][50636599][526504300]Metselaarsstraat

ways[ways_length][2] is first set to 5.0631700 then 1 loop later to 52.6502500 although this value should be assigned to ways[ways_length][3].

I can't figure out why this is happening and I'm hoping one of you could help me. If you need more information I'd be happy to add some more.

Regards,

Ragoune

[Norm]

the line "count ++;" isn't executed

try debugging your code to see why that line is not being executed. Print out the values of the variables in the if statement that controls when the statement will be executed. Perhaps it is never true.

[Tolls]

	if (line.substring(begin, end).equals("[B]50631700[/B]"))
	{
		System.out.println(count);
		System.exit(0);
	}

[50631700][526503000][50631700][526502500][50634600][526498599][50635400][526498500][50639500][526499800][50636599][526504300]Metselaarsstraat

Won't this exit?

[Ragoune]

Woow, thanks for the reply. Of course, I've been debugging for a long time, but you gave me a new insight:
The problem was that the "line = line.replace(...);" also deleted the other occurences of the point. I thought it only deleted the first one.
It was pure a coincidence that the 2 points where exactly the same. Thanks!

Btw, for anyone who's interested, this is my new line:
line = line.replaceFirst(line.substring(begin-1, end+1).replace("[", "\\[").replace("]", "\\]"), "");