Java string not equals

Question

So I have String array

String[] faculties = new String[21];

and I need to fill it with the names of faculties from .txt file that looks like

Math & CS; First Speciality; First Program; etc

Math & CS; Second Speciality; First Program; etc

Math & CS; Second Speciality; Second Program; etc

Physics; First Speciality; First Program; etc

Physics; First Speciality; Second Program; etc

I use the next code to get these names

FileReader input = new FileReader("faculties1.txt");
BufferedReader bufRead = new BufferedReader(input);
String myLine;
int f = 0;

    while((myLine = bufRead.readLine())!= null){
        String[] arr = myLine.split(";");

        if(f == 0){
            faculties[f] = arr[0];
            f++;
        }
        else{
            if(!faculties[f-1].trim().equals(arr[0].trim())){
                faculties[f] = arr[0];
                f++;
            }
        }
    }

but when I try to check my array

for(int i = 0; i < f; i++){
        System.out.println(faculties[i]);
    }

console says me

Math & CS

Math & CS

Physics

I dont get why Java puts "Math & CS" second time to my array.

@litelite yep. this if(!faculties[f-1].trim().equals(arr[0].trim())) returns true when f == 1 even if arr[0] == "Math & CS" and faculties[f-1] == "Math & CS" — slxvxBatih
– slxvxBatih, Commented May 23, 2017 at 13:01
Maybe some kind of invisible unicode caracter somewhere in the file? You can try to open the file with something like notepad++ or sublime text and activate the show all caracters option. — litelite
– litelite, Commented May 23, 2017 at 13:03
Try doing a String.compare on faculties[f-1] and arr[0]? If that returns anything other than 0, there's a character issue, as @litelite says — Ishnark
– Ishnark, Commented May 23, 2017 at 13:05
@litelite thank you much! I used UTF-8 .txt in my project to see cyrillic symbols in console, but when I changed .txt to ANSI console said me Math & CS Physics — slxvxBatih
– slxvxBatih, Commented May 23, 2017 at 13:07

kapex · Accepted Answer · 2017-05-23 13:42:46Z

1

I tried this it is worked fine and output returns as you expected I think, anyhow you need to throws exceptions.

Math & CS
Physics

According to me there can be,

mispelled character in your text file. Check using different text-editor rather than windows notepad.

UPDATE:

After added this answer I saw your last comment in question that your problem solved.

I am adding this comment because if someone did not see your comment this will be helpful to them.

I used UTF-8 .txt in my project to see cyrillic symbols in console, but when I changed .txt to ANSII console said me Math & CS Physics*

edited May 23, 2017 at 13:42

kapex

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answered May 23, 2017 at 13:25

Blasanka

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1 Comment

Blasanka Over a year ago

Affter added this answer I saw your last comment in question that your problem solved.

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