check if a set contains Any element from an array - Java Collection Framework

Java examples for Collection Framework:Array Contain

  1. HOME
  2. Java
  3. Collection Framework
  4. Array Contain

Description

check if a set contains Any element from an array

Demo Code


import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class Main{
    public static <T> boolean containsAny(Set<T> set, T... elements) {
        return !Collections.disjoint(set, newCollection(elements));
    }//from w w w  .  j a  v  a 2s.  c  om
    public static <T> Collection<T> newCollection(Collection<T> collection) {
        if (isNotEmpty(collection)) {
            ArrayList<T> arrayList = new ArrayList<T>(collection.size());
            arrayList.addAll(collection);
            return arrayList;
        }

        return new ArrayList<T>();
    }
    public static <T> Collection<T> newCollection(T... elements) {
        return newList(elements);
    }
    public static <T> Boolean isNotEmpty(Collection<T> collection) {
        return !isEmpty(collection);
    }
    public static <T> List<T> newList(T... elements) {
        if (GeneralUtil.isNotNull(elements)) {
            ArrayList<T> arrayList = new ArrayList<T>(elements.length);
            arrayList.addAll(Arrays.asList(elements));
            return arrayList;
        }

        return new ArrayList<T>();
    }
    public static <T> Boolean isEmpty(Collection<T> collection) {
        if (GeneralUtil.isNull(collection))
            return Boolean.TRUE;

        return collection.isEmpty();
    }
    public static <T> List<T> asList(Collection<T> collection) {
        if (isNotEmpty(collection))
            return new ArrayList<T>(collection);

        return new ArrayList<T>();
    }
    public static <T> List<T> asList(T[] elements) {
        return newList(elements);
    }
}

Related Tutorials