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package com.ups.oppo.push.server.sdk.util;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
/**
* Created by wangxinguo on 2016-8-23.
*/
public class CollectionUtils {
/**
* Return {@code true} if the supplied Collection is {@code null}
* or empty. Otherwise, return {@code false}.
*
* @param collection the Collection to check
* @return whether the given Collection is empty
*/
public static boolean isEmpty(Collection collection) {
return (collection == null || collection.isEmpty());
}
/**
* Return {@code true} if the supplied Map is {@code null}
* or empty. Otherwise, return {@code false}.
*
* @param map the Map to check
* @return whether the given Map is empty
*/
public static boolean isEmpty(Map map) {
return (map == null || map.isEmpty());
}
/**
* 将List中的数据组成用冒号分隔的字符串，如a;b;c
*
* @param strList
* @return
*/
public static String list2Str(Collection strList) {
String resultStr = "";
if (!CollectionUtils.isEmpty(strList)) {
List list = new ArrayList(strList);
for (int i = 0; i < list.size(); i++) {
resultStr = resultStr + list.get(i) + ';';
}
resultStr = resultStr.substring(0, resultStr.length() - 1);
}
return resultStr;
}
}