Two identical Strings are not equal(Not pointer/reference mistake)

问题

I read a line from a file:

KatalogObrazków 1 32

Means that I should look for data in:

C:\Users\NAME_OF_THE_USER/KatalogObrazków

and so I do it, but there is horrible thing going on. In splitLine[0] I have a word "KatalogObrazków" but then the computer says that "KatalogObrazków".equals(splitLine[0]) is false, there is no whitespace arround splitLine[0] left after splitting line. Please have a look at the code below.

    BufferedReader br = new BufferedReader(new FileReader(path));
    String line;
    String[] splitLine;
    if ((line = br.readLine()) != null) {
        splitLine = line.split(" ");
        System.out.println(splitLine[0]);//1st line of output
        System.out.println("KatalogObrazków".equals(splitLine[0]));//these are not EQUAL!!!!!??? WHY?
        imageDirectoryPath = System.getProperty("user.home")+"/" + splitLine[0];
        System.out.println(new File(imageDirectoryPath).exists());
        delay = Integer.parseInt(splitLine[1]);
        fontSize = Integer.parseInt(splitLine[2]);
    }
    br.close();

Output:

KatalogObrazków
false
false
C:\Users\R/KatalogObrazków

EDIT:

System.out.println();
            for (char c : splitLine[0].toCharArray())
                System.out.print((int) c + " ");
            System.out.println();
            for (char c : "KatalogObrazków".toCharArray())
                System.out.print((int) c + " ");
            System.out.println();

GOT ME:

65279 75 97 116 97 108 111 103 79 98 114 97 122 107 243 119 
75 97 116 97 108 111 103 79 98 114 97 122 107 243 119

回答1:

You may have encountered the UTF-BOM at the beginning of your file.

http://en.wikipedia.org/wiki/Byte_order_mark

It's invisible because most editors hide it. Pretty evil, huh?

来源：https://stackoverflow.com/questions/23551683/two-identical-strings-are-not-equalnot-pointer-reference-mistake

标签

java

string

equals