Java Collection Flatten flattenStrings(Collection values)

Description

Flatten the list of strings into a single string with a space separator.

License

Apache License

Parameter

Parameter	Description
values	a parameter

Return

flattened list

Declaration

public static String flattenStrings(Collection<String> values) 

Method Source Code

//package com.java2s;
/*//w ww . j  a  va 2s.  c  o  m
 * Copyright 2011 gitblit.com.
 *
 * 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 {
    /**
     * Flatten the list of strings into a single string with a space separator.
     *
     * @param values
     * @return flattened list
     */
    public static String flattenStrings(Collection<String> values) {
        return flattenStrings(values, " ");
    }

    /**
     * Flatten the list of strings into a single string with the specified
     * separator.
     *
     * @param values
     * @param separator
     * @return flattened list
     */
    public static String flattenStrings(Collection<String> values, String separator) {
        StringBuilder sb = new StringBuilder();
        for (String value : values) {
            sb.append(value).append(separator);
        }
        if (sb.length() > 0) {
            // truncate trailing separator
            sb.setLength(sb.length() - separator.length());
        }
        return sb.toString().trim();
    }
}

Related

1. flatten(final S targetCollection, final Collection> setOfSets)
2. flattenCollection(Collection col)
3. flattenCollection(Collection array, String fmt, char separator)
4. flattenForest(Collection forest)
5. flattenNodeIds( Collection> nodesInMotif)
6. flattenToString(Collection c)
7. flattenToString(Collection collection, String delimiter)