Java String Empty to Null emptyToNull(String str)

Description

Returns the given string if it is nonempty; null otherwise.

License

Apache License

Parameter

Parameter	Description
str	the string to test and possibly return

Return

string itself if it is nonempty; null if it is empty or null

Declaration

public static String emptyToNull(String str) 

Method Source Code

//package com.java2s;
/**/*from www.  j  av a 2 s . c o m*/
 * Copyright 2008-2016 Juho Jeong
 *
 * 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.
 */

public class Main {
    /**
     * Returns the given string if it is nonempty; {@code null} otherwise.
     *
     * @param str the string to test and possibly return
     * @return {@code string} itself if it is nonempty; {@code null} if it is empty or null
     */
    public static String emptyToNull(String str) {
        return (str == null || str.length() == 0) ? null : str;
    }
}

Related

1. emptyToDefault(T[] values, T[] def)
2. emptyToNull(final String text, final boolean doTrim)
3. emptyToNull(String field)
4. emptyToNull(String s)
5. emptyToNull(String s)
6. emptyToNull(String str)
7. emptyToNull(String str)
8. emptyToNull(String string)
9. emptyToNull(String text)