Examples of com.ibm.icu.util.StringTokenizer.countTokens()

com.ibm.icu.util.StringTokenizer.countTokens()
Calculates the number of times that this tokenizer's nextToken method can be called before it generates an exception. The current position is not advanced. @return the number of tokens remaining in the string using the current delimiter set. @see #nextToken() @stable ICU 2.4

        StringTokenizer st = new StringTokenizer(str, delimiter);
        StringTokenizer streturn = new StringTokenizer(str, delimiter, true);
        if (st.countTokens() != expected.length) {
            errln("CountTokens failed for non-delimiter tokens");
        }
        if (streturn.countTokens() != expectedreturn.length) {
            errln("CountTokens failed for delimiter tokens");
        }
        for (int i = 0; i < expected.length; i ++) {
            if (!st.nextElement().equals(expected[i])
                || st.countTokens() != expected.length - i - 1) {

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                errln("CountTokens default delimiter gives wrong results");
            }
        }
        for (int i = 0; i < expectedreturn.length; i ++) {
            if (!streturn.nextElement().equals(expectedreturn[i])
                || streturn.countTokens() != expectedreturn.length - i - 1) {
                errln("CountTokens with default delimiter and delimiter tokens gives wrong results");
            }
        }    
    }

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        for (int i = 0; i < size; i ++) {
            for (int j = 0; j < delimiter.length; j ++) {
                if (!st.nextToken(delimiter[j]).equals(expected[j][i])) {
                    errln("nextToken() with delimiters error " + i + " " + j);
                }
                if (st.countTokens() != expected[j].length - i) {            
                    errln("countTokens() after nextToken() with delimiters error"
                          + i + " " + j);
                }
            }
        }

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        //
        String s1 = "This is a test";
        StringTokenizer tzr = new StringTokenizer(s1);
        int  tokenCount = 0;
        
        int t = tzr.countTokens();
        if (t!= 4) {
            errln("tzr.countTokens() returned " + t + ".  Expected 4");
        }
        while (tzr.hasMoreTokens()) {
            String  tok = tzr.nextToken();

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        //  boundary where growth is forced.  Array grows in increments of 100 tokens.
        String s2 = "";
        for (int i=1; i<250; i++) {
            s2 = s2 + " " + i;
            StringTokenizer tzb = new StringTokenizer(s2);
            int t2 = tzb.countTokens();
            if (t2 != i) {
                errln("tzb.countTokens() returned " + t + ".  Expected " + i);
                break;
            }
            int j = 0;

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            String t = st.nextToken();
            logln("[" + count + "] '" + t + "'");
            ++count;
        }
        st = new StringTokenizer(str, del, true);
        int ncount = st.countTokens();
        int xcount = 0;
        while (st.hasMoreTokens()) {
            String t = st.nextToken();
            logln("[" + xcount + "] '" + t + "'");
            ++xcount;

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