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The SoftiCAR Platform is a lightweight, Java-based library to create interactive business web applications.

There is a newer version: 50.0.0

package com.softicar.platform.common.container.map;

import java.util.Map;

/**
 * Utility methods for {@link Map}.
 *
 * @author Oliver Richers
 */
public class Maps {

	// -------------------- double -------------------- //

	public static  double getDoubleOrZero(Map map, K key) {

		return Maps.getDoubleOrDefault(map, key, 0.0);
	}

	public static  double getDoubleOrDefault(Map map, K key, double defaultValue) {

		Double value = map.get(key);
		return value != null? value : defaultValue;
	}

	public static  double addDouble(Map map, K key, double value) {

		Double oldValue = map.put(key, value);

		if (oldValue != null) {
			value += oldValue;
			map.put(key, value);
		}

		return value;
	}
}