java中实现Comparable接口实现自定义排序的示例_Java教程

java中实现Comparable接口实现自定义排序的示例

2021-01-10 11:49Stevenatalie Java教程

下面小编就为大家带来一篇java中实现Comparable接口实现自定义排序的示例。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧

实例如下所示：

									class Student implements Comparable{

									  String name;

									  int gpa;

									  @Override

									  public int compareTo(Object arg0) {

									    // TODO Auto-generated method stub

									    Student s = (Student)arg0;

									    if(gpa == s.gpa) return name.compareTo(s.name);

									    else if(gpa < s.gpa) return -1;

									    else if(gpa > s.gpa) return 1;

									    else return 0;

									  }

									}

									class Test {

									  public static void main(String[] args){

									    Scanner in = new Scanner(System.in);

									    int n = in.nextInt();

									    Student[] s = new Student[n];

									    for(int i = 0;i < n;i ++){

									      s[i] = new Student();

									      s[i].name = in.next();

									      s[i].gpa = in.nextInt();

									    }

									    Arrays.sort(s);

									    for (Student ss : s) 

									    { 

									      System.out.println(ss.name); 

									      System.out.println(ss.gpa); 

									    } 

									  }

									}