import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

/**
 * 給定一些分割符，給定一個待分割的字串，打印出分割之後最長的字串(多個則換行輸出)
 */
public class TokenLongest {

    public static void main(String[] args) {
        String delimiters = ",. \"";
        String str = "The string tokenizer class allows an application to break a string into tokens.";
 
        printTokenLongest(str, delimiters);
    }

    private static void printTokenLongest(String str, String delim) {
        StringTokenizer stringTokenizer = new StringTokenizer(str, delim);
        List<String> list = new ArrayList<>();
        String temp;
        int length, maxlength;
        while (stringTokenizer.hasMoreTokens()) {
 
            temp = stringTokenizer.nextToken();
            if (list.isEmpty()) {
                list.add(temp);
            } else if ((length = temp.length()) < (maxlength = list.get(0).length())) {
                continue;
            } else if (length > maxlength) {
                list.clear();
 
            }
            list.add(temp);
        }
        list.forEach(System.out::println);
    }

}

/* 如有意見或建議，歡迎評論區留言；如發現程式碼有誤，歡迎批評指正 */