com.crosstreelabs.jaxrs.api.versioned.util.StringUtils Maven / Gradle / Ivy

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/*
 * 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 com.crosstreelabs.jaxrs.api.versioned.util;

import java.util.Collection;
import java.util.Iterator;

public class StringUtils {
    public static String join(final Collection strs,
            final String delimiter) {
        if (strs == null || strs.isEmpty()) {
            return "";
        }
        Iterator it = strs.iterator();
        if (strs.size() == 1) {
            return it.next();
        }
        StringBuilder sb = new StringBuilder(it.next());
        while (it.hasNext()) {
            sb.append(delimiter).append(it.next());
        }
        return sb.toString();
    }
}