Java Collection Null isNull(Collection collection)

Description

is Null

License

Open Source License

Declaration

public final static boolean isNull(Collection collection) 

Method Source Code

//package com.java2s;
import java.util.Collection;
import java.util.Map;

public class Main {
    public final static boolean isNull(Object[] objs) {
        if (objs == null || objs.length == 0) {
            return true;
        }/*from   w w  w .j  a v  a  2s  . c  o  m*/
        return false;
    }

    public final static boolean isNull(Integer integer) {
        if (integer == null || integer == 0) {
            return true;
        }
        return false;
    }

    public final static boolean isNull(Collection collection) {
        if (collection == null || collection.size() == 0) {
            return true;
        }
        return false;
    }

    public final static boolean isNull(Map map) {
        if (map == null || map.size() == 0) {
            return true;
        }
        return false;
    }

    public final static boolean isNull(String str) {
        return str == null || "".equals(str.trim()) || "null".equals(str.toLowerCase());
    }

    public final static boolean isNull(Long longs) {
        if (longs == null || longs == 0) {
            return true;
        }
        return false;
    }
}

Related

1. hasAtLeastOneNotNullElement(Collection collection)
2. hasCollectionNullItem(Collection collection)
3. isAllNull(Collection values)
4. isEmplyOrNull(Collection collection)
5. isNotNull(Collection collection)
6. isNull(Collection collection)
7. isNull(Collection c)
8. isNull(Collection collection)
9. isNull(Collection collection)