fork download
copy 
  1. class Scratch {
  2.   public static void main(String[] args) {
  3.     final Employee jim = new Employee(2, "jim", 10_000);
  4.     final Employee ted = new Employee(2, "ted", 35_000);
  5.     final Employee john = new Employee(9, "john", 20_000);
  6.  
  7.     System.out.println("jim compare to ted: " + jim.compareTo(ted));
  8.     System.out.println("john compare to jim: " + john.compareTo(jim));
  9.     System.out.println("john compare to ted: " + john.compareTo(ted));
  10.   }
  11. }
  12.  
  13. class Employee implements Comparable<Employee> {
  14.   int empId;
  15.   String empName;
  16.   double salary;
  17.  
  18.   public Employee(int empId, String empName, double salary) {
  19.     this.empId = empId;
  20.     this.empName = empName;
  21.     this.salary = salary;
  22.   }
  23.  
  24.   @Override
  25.   public int hashCode() {
  26.     return empId;
  27.   }
  28.  
  29.   @Override
  30.   public boolean equals(Object o) {
  31.     if(this == o) return true;
  32.     if(o == null || this.getClass() != o.getClass()) return false;
  33.  
  34.     Employee e = (Employee) o;
  35.     return (this.empId == e.empId);
  36.   }
  37.  
  38.   @Override
  39.   public String toString() {
  40.     return empId + " " + empName + " " + salary;
  41.   }
  42.  
  43.   @Override
  44.   public int compareTo(Employee e) {
  45.     if(empId == e.empId)
  46.       return 0;
  47.  
  48.     if(this.salary < e.salary) {
  49.       return -1;
  50.     }
  51.     else {
  52.       return 1;
  53.     }
  54.   }
  55. }
Success #stdin #stdout 0.14s 48048KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
jim compare to ted: 0
john compare to jim: 1
john compare to ted: -1
https://ideone.com/RulANI
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!