将数组转化为list:
Arrays.asList(atp);
lambda实现数据过滤， 并行操作， 循环输出案例：
1.需求：打印输出已经排好序的字符串数组中长度大于20 ，并且为其添加hello ;
数据源：
String[] players = {"Rafael Nadal", "Novak Djokovic", "Stanislas Wawrinka", "David Ferrer", "Roger Federer", "Andy Murray", "Tomas Berdych", "Juan Martin Del Potro", "Richard Gasquet", "John Isner"};
排序：
Arrays.sort(players);
转化为list操作:
List<String> list=Arrays.asList(players);
过滤长度大于20 ，并为其添加hello 输出：
list.stream().filter(a->a.length()>20).map(a->a+=" hello").forEach(player->System.out.println(player));
2.需求：对多个对象，按照年龄进行排序输出：
数据源：（省略对象类 name ,age ）
public static List<People> peopleList = new ArrayList<People>();
peopleList.add(new People("a",17)); peopleList.add(new People("b",16)); peopleList.add(new People("c",19)); peopleList.add(new People("d",15));
按照年龄排序：
Collections.sort(peopleList,(People a,People b)->a.getAge().compareTo(b.getAge())); peopleList.stream().forEach(a->System.out.println(a.getAge()));
