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UniqueWords.java
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28 lines (27 loc) · 987 Bytes
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// collections/UniqueWords.java
// (c)2016 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
import java.util.*;
import java.nio.file.*;
public class UniqueWords {
public static void
main(String[] args) throws Exception {
List<String> lines =
Files.readAllLines(Paths.get("SetOperations.java"));
Set<String> words = new TreeSet<>();
for(String line : lines)
for(String word : line.split("\\W+"))
if(word.trim().length() > 0)
words.add(word);
System.out.println(words);
}
}
/* Output:
[A, B, C, Collections, D, E, F, G, H, HashSet, I, J, K, L,
M, N, Output, Set, SetOperations, String, System, X, Y, Z,
add, addAll, added, args, class, collections, contains,
containsAll, false, from, import, in, java, main, new, out,
println, public, remove, removeAll, removed, set1, set2,
split, static, to, true, util, void]
*/