Java Array.sore怎么实现两个条件排序，网上说传入什么接口，可是我不会

Question

Java Array.sore怎么实现两个条件排序，网上说传入什么接口，可是我不会，有没有可以运行的代码看一下。

Answer 1

sort(T[] a, Comparator<? super T> c)你说的应该是这种方法，实现Comparator比较器。下面的是先比较姓名，姓名一致的时候在比较年龄，这边年龄用的Integer。

                Student[] students = new Student[4];
        Student student = Student.of("tom",18);
        Student student1 = Student.of("may",19);
        Student student2 = Student.of("alice",18);
        Student student3 = Student.of("tom",19);
        students[0] = student;
        students[1] = student1;
        students[2] = student2;
        students[3] = student3;
        Arrays.sort(students, new Comparator<Student>() {
            @Override
            public int compare(Student o1, Student o2) {
                int c1 = o1.getName().compareTo(o2.getName());
                if (c1 == 0){
                    return o1.getAge().compareTo(o2.getAge());
                }
                return c1;
            }
        });
        System.out.println(Arrays.toString(students));

        @Data
    @AllArgsConstructor(staticName = "of")
    public class Student {
        private String name;

        private Integer age;
    }