StringUtilities.java

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package com.arcle.rmt.j2se.util;

public final class StringUtilities {
    private StringUtilities() {
        throw new Error("StringUtilities is just a container for static methods");
    }

    public static String stripChars(String str, int startIndex, int endIndex,
            char[] chars, boolean exclude) {

        StringBuffer stripped = new StringBuffer(endIndex - startIndex + 1);
        for (int i=startIndex; i<=endIndex; i++) {
            boolean found = false;
            char current = str.charAt(i);
            for (int j=0; j<chars.length; j++) {
                if (current == chars[j]) {
                    found = true;
                    break;
                }
            }
            // shouldAppend = !(found equivalent exclude)

            boolean shouldAppend = !(found == exclude);
            if (shouldAppend) {
                stripped.append(current);
            }
        }
        return stripped.toString();
    }

    public static String stripAllExceptConsonantsOrFirstChar(String str) {
        return str.charAt(0) + stripChars(str, 1, str.length() - 1,
            CONSONANTS, false);
    }


    public static final char[] VOWELS = {
        'a', 'i', 'u', 'e', 'o',
        'A', 'I', 'U', 'E', 'O'
    };

    public static final char[] CONSONANTS = {
        'b','c','d','f','g','h','j','k','l','m','n','p','q','r','s','t','v',
        'w','x','y','z',
        'B','C','D','F','G','H','J','K','L','M','N','P','Q','R','S','T','V',
        'W','X','Y','Z'
    };
}

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