Android String Empty Check trimToEmpty(String str)

Description

trim To Empty

License

Apache License

Declaration

public static String trimToEmpty(String str) 

Method Source Code

//package com.java2s;
/**//w w  w . j  a  va 2s  .  c om
 * Copyright 2013 ??????
 *
 * 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 {
    public static final String EMPTY = "";

    public static String trimToEmpty(String str) {
        return isBlank(str) ? EMPTY : trim(str);
    }

    public static boolean isBlank(String str) {
        if (str == null) {
            return true;
        }
        int strLen = str.length();
        if (strLen > 0) {
            for (int i = 0; i < strLen; i++) {
                if (Character.isWhitespace(str.charAt(i)) == false) {
                    return false;
                }
            }
        }
        return true;
    }

    public static String trim(String str) {
        return str == null ? null : str.trim();
    }
}

Related

1. isNullOrEmptyOrOnlyWhitespaces(String string)
2. nullToEmpty(String url)
3. isEmpty(String s)
4. isEmpty(String s)
5. isEmpty(String str)
6. isEmpty(String string)
7. isEmptyString(String str)
8. isEmptyString(String str)
9. isNullOrEmpty(CharSequence any)