Android Collection Join toString(Collection collection, String separator)

Description

Returns a String representation of the given collection by separating the elements with the given separator.

License

Apache License

Parameter

Parameter	Description
collection	a parameter
separator	a parameter

Declaration

public static String toString(Collection<? extends Object> collection,
        String separator) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2012-present Pixate, Inc.//from  w ww .jav  a  2 s . c om
 * 
 * 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 {
    /**
     * Returns a String representation of the given collection by separating the
     * elements with the given separator.
     * 
     * @param collection
     * @param separator
     * @return
     */
    public static String toString(Collection<? extends Object> collection,
            String separator) {
        if (collection == null || collection.isEmpty()) {
            return "";
        }
        StringBuilder builder = new StringBuilder();
        int count = collection.size();
        for (Object obj : collection) {
            builder.append(obj);
            if (--count > 0) {
                builder.append(separator);
            }
        }
        return builder.toString();
    }

    /**
     * Returns <code>true</code> if the given collection is <code>null</code> or
     * empty.
     * 
     * @param collection
     * @return <code>true</code> if the given collection is <code>null</code> or
     *         empty; <code>false</code> otherwise.
     */
    public static boolean isEmpty(Collection<?> collection) {
        return collection == null || collection.isEmpty();
    }
}

Related

1. join(Collection... collections)
2. join(String conjunction, Collection... collections)
3. suffixAndJoin(String suffix, String delimiter, Collection values)
4. join(Collection collection, String s)
5. join(Collection strings, String sep)
6. join(Collection strings, String sep)
7. join(final Collection strings, String delimeter)