Comparison with string read from file returns false even when they look the same

Question

I'm trying to read a string from a .csv file (separeted by ;) and then compare the first column to the login string. Here is my code:

FileReader file = new FileReader("MyCSV.csv");
BufferedReader entry = new BufferedReader(file);
String row;
row = entry.readLine();
do {
    String[] value = row.split(";");
    if (login.equals(value[0])) {   // login is passed as an argument to his function
         // do something
    }
    row = entry.readLine();
} while (row != null);

I can read the entire file, but I'm not being able to search for the first user register. The login comparison always returns false to the first one. I tried:

if (value[0].equals(login)) 
if (value[0] == login)

An example in console:

// I've put this inside `do while`
System.out.println(value[0] + " and " + login + " = " + login.equals(value[0]));

And the result is:

leonidas and leonidas = false
rafatcb and leonidas = false
davinci and leonidas = false
login and leonidas = false

If I compare to "rafatcb":

leonidas and rafatcb = false
rafatcb and rafatcb = true   // true, as expected

I also tried the following code, but it still returns false for "leonidas":

value[0].trim().equals(String.valueOf(login.trim()));

---

As suggested in the comments, I printed using .toCharArray():

System.out.println(Arrays.toString(value[0].toCharArray()));
System.out.println(Arrays.toString(login.toCharArray()));

And the result was:

[, l, e, o, n, i, d, a, s]
[l, e, o, n, i, d, a, s]

Answer 1

Since you are reading from a file there may be non printable characters in your variable value[0]. You can replace them as below

value[0].replaceAll("\0", "").equals(login)

and it should work fine.