Java String Empty to Null emptyToNull(String s)

Description

Converts a 0-length string to null, leaves the string as is otherwise.

License

Apache License

Parameter

Parameter	Description
s	maybe null .

Declaration

public static String emptyToNull(String s) 

Method Source Code

//package com.java2s;
/*//from   w w  w  .  j a va  2s  . c  om
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 {
    /**
     * Converts a 0-length string to null, leaves the string as is otherwise.
     * @param s maybe {@code null}.
     */
    public static String emptyToNull(String s) {
        if (s == null)
            return null;
        return s.length() == 0 ? null : s;
    }
}

Related

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