Java String Empty to Null nvlStr(Object o, String valueIfNull)

Description

nvl Str

License

Open Source License

Declaration

public static String nvlStr(Object o, String valueIfNull) 

Method Source Code

//package com.java2s;
/**//from  w  w  w  . j  a  v a  2 s . c  om
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */

import java.util.Arrays;
import java.util.Collection;

public class Main {
    public static String nvlStr(Object o, String valueIfNull) {
        if (isEmpty(o)) {
            return valueIfNull;
        }
        return o.toString();
    }

    public static boolean isEmpty(Object o) {
        return o == null || o.equals("");
    }

    public static String toString(Collection<?> c) {
        StringBuilder ret = new StringBuilder();
        if (c != null) {
            for (Object o : c) {
                ret.append(ret.length() == 0 ? "" : ",").append(o);
            }
        }
        return ret.toString();
    }

    public static String toString(Object[] c) {
        if (c != null) {
            return toString(Arrays.asList(c));
        }
        return "";
    }
}

Related

1. emptyToNull(String val)
2. emptyToNull(String value)
3. emptyToString(String str, String returnStr)
4. isHtmlNull(String str)
5. nullSafeToString(Object obj)
6. parseCommas(String s, boolean ignoreNulls)
7. removeNulls(String... strings)
8. toString(Object object, String nullStr)