Here you can find the source of sort(List
@SuppressWarnings({ "unchecked", "rawtypes" }) public static <T> List<T> sort(List<T> list)
//package com.java2s; /*/*w w w. ja va 2s. 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.Collections; import java.util.List; public class Main { @SuppressWarnings({ "unchecked", "rawtypes" }) public static <T> List<T> sort(List<T> list) { if (list != null && list.size() > 0) { Collections.sort((List) list); } return list; } }