Java Collection Join joinAsStrings(Collection values, String separator)

Description

Utility method to join a collection into a string using a supplied separator.

License

Open Source License

Parameter

Parameter	Description
T	The type of the values in the collection to be joined
values	The collection to be joined
separator	The separator to insert between each value in the result string

Return

a string with the elements of values separated by separator

Declaration

static <T> String joinAsStrings(Collection<T> values, String separator) 

Method Source Code

//package com.java2s;
/*/*  w w w.  j a  va2  s.  c  o  m*/
 * Sleuth Kit Data Model
 *
 * Copyright 2017 Basis Technology Corp.
 * Contact: carrier <at> sleuthkit <dot> org
 *
 * 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.Collection;

public class Main {
    /**
     * Utility method to join a collection into a string using a supplied
     * separator.
     *
     * @param <T>       The type of the values in the collection to be joined
     * @param values    The collection to be joined
     * @param separator The separator to insert between each value in the result
     *                  string
     *
     * @return a string with the elements of values separated by separator
     */
    static <T> String joinAsStrings(Collection<T> values, String separator) {
        if (values == null || values.isEmpty()) {
            return "";
        }

        StringBuilder result = new StringBuilder();
        for (T val : values) {
            result.append(val);
            result.append(separator);
        }

        return result.substring(0, result.lastIndexOf(separator));
    }
}

Related

1. join(String[] collection, String separator)
2. join(StringBuilder builder, Collection strs)
3. join2(Collection list, String delimiter)
4. joinAndDelimit(final Collection strings, final String sep, final String delim)
5. joinAsString(Collection collection, String separator)
6. joinCol(Collection lst, String delim)
7. joinCollection(Collection collection, char delimiter)
8. joinCollection(Collection a)
9. joinCollections(final Collection target, final Collection... collections)