Column Separation for Screen Readers maybe!!!

import java.io.*;
import java.util.ArrayList;

public class ColumnedString {
    private final String raw;
    private final String screenReader;
    public ColumnedString(String raw) {
        this.raw = raw;
        this.screenReader = this.divideColumns(raw);
    }
    private String divideColumns(String source) {
        StringBuilder result = new StringBuilder();
        StringBuilder curSB;
        ArrayList<StringBuilder> columns = new ArrayList<StringBuilder>();
        ArrayList<Integer> curColumns = new ArrayList<Integer>();
        String[] lineColumns;
        BufferedReader br = new BufferedReader(new StringReader(source));
        String line;
        try {
            while ((line = br.readLine()) != null) {
                // split lines into columns, where columns are separated by one or more |
                // also, strip any excess white space
                lineColumns = line.split(" *\\|+ *");
                while (lineColumns.length < curColumns.size()) {
                    // truncate columns no longer in use
                    curColumns.remove(curColumns.size()-1);
                }
                while (lineColumns.length > curColumns.size()) {
                    // add new columns
                    curColumns.add(columns.size());
                    columns.add(new StringBuilder());
                }
                for (int i = 0; i < lineColumns.length; i++) {
                    curSB = columns.get(curColumns.get(i));
                    if (curSB.length() > 0 && curSB.charAt(curSB.length()-1) != ' ') {
                        // separate lines of the same column with a space if they aren't already
                        curSB.append(' ');
                    }
                    curSB.append(lineColumns[i]);
                }
            }
        } catch (IOException e) {
            // why would a StringReader even throw an exception on readLine()? *_*
        }
        String separator = "";
        for (int i = 0; i < columns.size(); i++) {
            if (columns.get(i).length() == 0) {
                // don't add empty columns - they're presumably just visual artifacts anyway
                continue;
            }
            result.append(separator).append(columns.get(i));
            separator = "\n\n";
        }
        return result.toString();
    }
    public String getRaw() {
        return this.raw;
    }
    public String getScreenReader() {
        return this.screenReader;
    }
    // driver function
    public static void main(String args[]) {
        String test = "| Column 1 text  | column 2 text | column 3\n" +
                "| could go here | could go here\n" +
                "| end of column 1 | | column 4";
        ColumnedString cs = new ColumnedString(test);
        System.out.println("-ORIGINAL-");
        System.out.println(cs.getRaw());
        System.out.println("-SCREEN READER-");
        System.out.println(cs.getScreenReader());
        System.out.println("-END-");
    }
}