lambda表達(dá)式,即帶有參數(shù)的表達(dá)式,為更清晰地理解lambda表達(dá)式,先看如下例子:

(1)
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 + "\""
+ "}";
}
}
@Test
public 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);
}
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