Java List to Array toStringArray(List list)

Description

to String Array

License

Apache License

Declaration

public static String[] toStringArray(List<String> list) 

Method Source Code

//package com.java2s;
/*/*from   w  ww. j a v  a  2 s.c o  m*/
 * Copyright 2002-2007 the original author or authors.
 *
 * 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;

import java.util.List;

public class Main {
    public static String[] toStringArray(List<String> list) {

        return list.toArray(new String[0]);
        // if (list == null) {
        // return null;
        // }
        // String[] strs = new String[list.size()];
        // for (int i = 0; i < list.size(); i++) {
        // strs[i] = (String) list.get(i);
        // }
        // return strs;
    }

    /**
     * Copy the given Collection into a String array. The Collection must
     * contain String elements only.
     * 
     * @param collection
     *            the Collection to copy
     * @return the String array (<code>null</code> if the passed-in Collection
     *         was <code>null</code>)
     */
    public static String[] toStringArray(Collection<String> collection) {
        if (collection == null) {
            return null;
        }
        return (String[]) collection.toArray(new String[collection.size()]);
    }
}

Related

1. toStringArray(List list)
2. toStringArray(List list)
3. toStringArray(List