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The Dolphin Platform is a framework that implements the presentation model pattern and provides amodern way to create enterprise applications. The Platform provides several client implementations that all canbe used in combination with a general sever API.

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/*
 * Copyright 2015-2016 Canoo Engineering AG.
 *
 * 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.
 */
package org.opendolphin;

public class StringUtil {

    /**
     * Determines whether a given string is null, empty,
     * or only contains whitespace. If it contains anything other than
     * whitespace then the string is not considered to be blank and the
     * method returns false.
     *
     * @param str The string to test.
     * @return true if the string is null, or
     * blank.
     */
    public static boolean isBlank(String str) {
        if (str == null || str.length() == 0) {
            return true;
        }
        for (char c : str.toCharArray()) {
            if (!Character.isWhitespace(c)) {
                return false;
            }
        }
        return true;
    }

}