io.mosip.registration.util.mastersync.EmptyCheckUtils Maven / Gradle / Ivy

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package io.mosip.registration.util.mastersync;

import java.util.Collection;
import java.util.Map;

/**
 * This class is used to avoid NPE: NullPointerException easily.
 * 
 * @author Sreekar Chukka
 * @since 1.0.0
 */
public final class EmptyCheckUtils {

	private EmptyCheckUtils() {
		super();
	}

	/**
	 * This method used to check if given obj is null.
	 * 
	 * @param obj
	 *            is of any java.lang.Object type.
	 * @return true if obj is null.
	 */
	public static boolean isNullEmpty(Object obj) {
		return obj == null;
	}


	/**
	 * This method is used to check if the given str is null or an
	 * empty string.
	 * 
	 * @param str
	 *            id of type java.lang.String
	 * @return true if given str is null or length of it is Zero after
	 *         trim.
	 */
	public static boolean isNullEmpty(String str) {
		return str == null || str.trim().length() == 0;
	}

	/**
	 * This method is used to check given collection is null or is
	 * Empty.
	 * 
	 * @param collection
	 *            is of type java.util.Collection.
	 * @return true if given collection is null or does not contains
	 *         any element inside it.
	 */
	public static boolean isNullEmpty(Collection collection) {
		return collection == null || collection.isEmpty();
	}

	/**
	 * This method is used to check given map is null or is Empty.
	 * 
	 * @param map
	 *            is of type java.util.Map
	 * @return true if given map is null or does not contains any key,
	 *         values pairs inside it.
	 */
	public static boolean isNullEmpty(Map map) {
		return map == null || map.isEmpty();
	}

}