在“\\n”Java 上拆分

Question

So I have written my String to a file ( wrote the "\\n"s as "\\n" to make them appear as "\\n") But when I get the String back from the file it wont split on the "\\n"'s. I know that the string is what I want it to be, but as you can see in this screenshot: http://imgur.com/VUcMPeV

the split turns into a list with only one element (which is the whole String, and also why it crashes when I try to get column[1]), and it doesnt split on the "\\n"'s.

Can any of you help me figure out why?

Here is the code as displayed in the screenshow (but without the console output)

public void loadGame(String boardInput){
    String column[] = boardInput.split("\n");
    System.out.println(column[0]);
    boardWidth = column[1].length();
    for (int y = 0; y < column.length; y++){
        if ( column[y].contains("@") || column[y].contains("+")){
            currentY = y;
        }
        ArrayList<Cell> row = new ArrayList<Cell>();
        String Chars[] = column[y].split("");
        for (int x = 0; x < column[y].length(); x++){
            if ( Chars[x].equals("@") || Chars[x].equals("+")){
                currentX = x;
            }
            if (Chars[x].equals(".") || Chars[x].equals("+") || Chars[x].equals("*")){
                row.add(new Cell(Chars[x], true));
            } else {
                row.add(new Cell(Chars[x], false));
            }
            }
            board.add(row);
    }
}

And this is the value of boardInput: *######*\\n# @ #\\n# $ . #\\n# #\\n*######* *######*\\n# @ #\\n# $ . #\\n# #\\n*######*

Answer 1

Use:

String column[] = boardInput.split("\\n");

"\\n" is the special character for the "line break". The additional \\ escapes the other \\ so it is read as the text \\n and not the special character any longer.

Read about Escape Sequences here .

Answer 2

use s.split("\\\\n") alwas use \\ before special characters. http://www.javapractices.com/topic/TopicAction.do?Id=96

Answer 3

I had the same issue as you, and the other answers didn't work for me either.
So I tried this: .split("\\\\\\\\n") and that worked. I assume there is something funny with our input that makes the double escaping necessary.