Asked by Mollie Weber on May 20, 2024
Verified
The method that must be implemented in a class using the Comparable interface is:
A) public Object compareToObject other)
B) public Boolean compareToObject other)
C) public int compareToObject other)
D) none of the above
Comparable Interface
An interface in Java that allows objects of a class to be compared to each other, primarily for sorting purposes.
CompareTo
A method in Java used for comparing two objects, specifically in sorting, returning an integer based on the comparison's result.
- Master the principles and deployment of the `Comparable` interface within the framework of Java Collections.
Verified Answer
AF
Aaryan FarooquiMay 20, 2024
Final Answer :
C
Explanation :
The method signature that must be implemented in a class using the Comparable interface is `public int compareTo(Object other)` where "other" is the object being compared to. The method should return a negative integer, zero, or a positive integer depending on whether the current object is less than, equal to, or greater than the object being compared to. Option A is incorrect because it uses the wrong method name and return type. Option B is incorrect because it uses the Boolean return type instead of int. Option D is incorrect because the class must implement the compareTo method.
Learning Objectives
- Master the principles and deployment of the `Comparable` interface within the framework of Java Collections.