对LIST对象多个字段进行排序

jdk1.8之前的做法

参考: http://blog.csdn.net/enable1234___/article/details/53224740

jdk1.8新特性的做法：

参考: http://blog.csdn.net/aitangyong/article/details/54880228

Student.java

public class Student {	private Long id;
	private String name;
	private String age;
	private Date birthday;

	public Student() {
	}

	public Student(Long id, String name, String age) {
		this.id = id;
		this.name = name;
		this.age = age;
	}

	public Student(String name, String age) {
		this.name = name;
		this.age = age;
	}

	public Student(String name, String age, Date birthday) {
		this.name = name;
		this.age = age;
		this.birthday = birthday;
	}

	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getAge() {
		return age;
	}

	public void setAge(String age) {
		this.age = age;
	}

	public Date getBirthday() {
		return birthday;
	}

	public String getBirthdayStr() {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
		return sdf.format(birthday);
	}

	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}

	@Override
	public String toString() {
		return "Student [name=" + name + ", age=" + age + ", birthday=" + getBirthdayStr() + "]";
	}
}

Listtest.java

public class ListTest {	@Test	public void test() {		List<Student> stuList = new ArrayList<Student>();		SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");		stuList.add(new Student("wang", "18", sdf.parse("2007/04/01")));		stuList.add(new Student("li", "19", sdf.parse("2007/05/01")));		stuList.add(new Student("liu", "20", sdf.parse("2006/04/01")));		stuList.add(new Student("xi", "15", sdf.parse("2007/04/01")));		stuList.add(new Student("li", "17", sdf.parse("2007/05/01")));		stuList.add(new Student("wang", "19", sdf.parse("2007/06/01")));		// age升序		Comparator<Student> byIdASC = Comparator.comparing(Student::getAge);		// named不分区大小写降序		Comparator<Student> byNameDESC = Comparator.comparing(Student::getName, String.CASE_INSENSITIVE_ORDER)				.reversed();		// birthday 降序		Comparator<Student> byBirthdayDESC = Comparator.comparing(Student::getBirthday).reversed();		// 联合排序		Comparator<Student> finalComparator = byIdASC.thenComparing(byNameDESC).thenComparing(byBirthdayDESC);		List<Student> result = stuList.stream().sorted(finalComparator).collect(Collectors.toList());		print(result);		// 输出结果:		// Student [name=xi, age=15, birthday=2007-04-01]		// Student [name=li, age=17, birthday=2007-05-01]		// Student [name=wang, age=18, birthday=2007-04-01]		// Student [name=wang, age=19, birthday=2007-06-01]		// Student [name=li, age=19, birthday=2007-05-01]		// Student [name=liu, age=20, birthday=2006-04-01]	}}