A simple example to use predicate to filter data structure

PredicateFilter.java

import java.util.Arrays;
import java.util.List;
import java.util.function.Predicate;
import java.util.stream.Collectors;


/**
 * A simple example to use predicate to filter data structure
 * @author Benoit Maggi
 */
public class PredicateFilter {
	
	public static final String[] dictionary = {"a", "ab", "ba","c"};
	
	public static List<String> getMatchingWords(Predicate<String> p){
		return (List<String>) Arrays.stream(dictionary).filter(p).collect(Collectors.toList());
	}
	
	public static void main(String[] args) {
		List<String> startWithA = getMatchingWords( new Predicate<String>() {
			@Override
			public boolean test(String t) {
				return t.startsWith("a");
			}
		});
		
		List<String> containsA = getMatchingWords( new Predicate<String>() {
			@Override
			public boolean test(String t) {
				return t.contains("a");
			}
		});
	}
	
}