Java String Empty coerceValueIfNullOrEmpty(String s, String valueIfNullOrEmpty)

Description

Use this when you want to normalize empty and null strings This way, Utility.areObjectsEqual can used for comparison, where a null string is to be treated the same as an empty string.

License

Apache License

Parameter

Parameter	Description
s	a parameter
valueIfNullOrEmpty	a parameter

Declaration

public static String coerceValueIfNullOrEmpty(String s, String valueIfNullOrEmpty) 

Method Source Code

//package com.java2s;
/**/*from w w  w.j a  v a 2 s.  c  o m*/
 * Copyright 2010-present Facebook.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.*;

public class Main {
    /**
     * Use this when you want to normalize empty and null strings
     * This way, Utility.areObjectsEqual can used for comparison, where a null string is to be treated the same as
     * an empty string.
     *
     * @param s
     * @param valueIfNullOrEmpty
     * @return
     */
    public static String coerceValueIfNullOrEmpty(String s, String valueIfNullOrEmpty) {
        if (isNullOrEmpty(s)) {
            return valueIfNullOrEmpty;
        }

        return s;
    }

    public static <T> boolean isNullOrEmpty(Collection<T> c) {
        return (c == null) || (c.size() == 0);
    }

    public static boolean isNullOrEmpty(String s) {
        return (s == null) || (s.length() == 0);
    }
}

Related

1. emptyString()
2. emptyString(final String a, final String defaultString)
3. emptyString(final String string)
4. emptyString(Object s)