Java8之lambda表达式基本语法

class Student{  private String name;  private Double score;  public Student(String name, Double score) {    this.name = name;    this.score = score;  }  public String getName() {    return name;  }  public Double getScore() {    return score;  }  public void setName(String name) {    this.name = name;  }  public void setScore(Double score) {    this.score = score;  }  @Override  public String toString() {    return "{"        + "\"name\":\"" + name + "\""        + ", \"score\":\"" + score + "\""        + "}";  }}@Testpublic void test1(){  List<Student> studentList = new ArrayList<Student>(){    {      add(new Student("stu1",100.0));      add(new Student("stu2",97.0));      add(new Student("stu3",96.0));      add(new Student("stu4",95.0));    }  };  Collections.sort(studentList, new Comparator<Student>() {    @Override    public int compare(Student o1, Student o2) {      return Double.compare(o1.getScore(),o2.getScore());    }  });  System.out.println(studentList);}