import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 *
 * @author jakub
 */
public class Test2 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
       String text = "a r b k c d se f g a d f s s f d s ft gh f ws w f v x s g h d h j j k f sd j e wed a d f";

    List<String> list = Arrays.asList(text.split(" "));

    Set<String> uniqueWords = new HashSet<>(list);
    for (String word : uniqueWords)
        System.out.println(word + ": " + Collections.frequency(list, word));

    }

}