Java集合排序练习2-4，烦请老师检查和指正～

package imooc_redo_exercise;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class StringSort {

	public static void main(String[] args) {
		List <String> list = new ArrayList <String> ();
		list.add("orange");
		list.add("tomato");
		list.add("apple");
		list.add("litchi");
		list.add("banana");
		System.out.println("Before:");
		for (String s: list) {
			System.out.print(s + "  ");
		}
		Collections.sort(list);
		System.out.println();
		System.out.println("After:");
		for (String s: list) {
			System.out.print(s + "  ");
		}

	}

}