Suppose there is an Employee class which contains id and name of the employees. You have added Employee class objects to an ArrayList. Now you want to sort the objects in the ArrayList according to the id attribute present in Employee class. Identify the steps need to be taken in the correct order. 1. Implement the Comparable interface in the Employee class. 2. Implement the Comparator interface in the Employee class. 3. Override the compareTo method as: int compareTo(Employee e) {return this.id - e.id ;} 4. Call sort method of Collections class and pass the list as an argument, that is, Collections.sort(empList)
Suppose there is an Employee class which contains id and name of the employees. You have added Employee class objects to an ArrayList. Now you want to sort the objects in the ArrayList according to the id attribute present in Employee class. Identify the steps need to be taken in the correct order. 1. Implement the Comparable interface in the Employee class. 2. Implement the Comparator interface in the Employee class. 3. Override the compareTo method as: int compareTo(Employee e) {return this.id - e.id ;} 4. Call sort method of Collections class and pass the list as an argument, that is, Collections.sort(empList)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Identify the steps need to be taken in the correct order
Transcribed Image Text:Suppose there is an Employee class which contains id and name of the employees. You
have added Employee class objects to an ArrayList. Now you want to sort the objects in
the ArrayList according to the id attribute present in Employee class. Identify the steps
need to be taken in the correct order.
1. Implement the Comparable interface in the Employee class.
2. Implement the Comparator interface in the Employee class.
3. Override the compareTo method as:
int compareTo(Employee e) { return this.id - e.id;}
4. Call sort method of Collections class and pass the list as an argument, that is,
Collections.sort(emplist)
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