Introduction to Java Programming and Data Structures, Comprehensive Version, Student Value Edition (11th Edition)
Question
Book Icon
Chapter 13.6, Problem 13.6.4CP
Program Plan Intro

Interface:

Interface is a reference type in Java, which contains a collection of abstract methods.

An interface needs to the follow certain conditions such as:

  • One cannot instantiate an interface.
  • Interfaces do not contain any constructors.
  • All methods present in the interface are abstracts.
  • An interface does not contain any instance field.
  • An interface cannot be extended by a class.

Comparable Interface:

A comparable interface is a generic interface that defines the compareTo() method that is used for comparing objects.

Example:

//java langauage package for comaprable interface

package  java.lang

//comparable interface definition

public interface Comparable <E>

{

//use of compareTo to compare objects

public integer compareTo(E o);

}

The compareTo() method determines the order of this object with the specified object “o” and returns a negative integer, zero or positive integer, if this object is less than, equal to or greater than object “o”.

Blurred answer
Students have asked these similar questions
Explain the relationship between the compareTo method and the equals method in a class that implements the Comparable interface.
what is the generic term for a method that creates an instance of a class (constructors?) and how would you call it for a class named MyClass that does not take any parameters?
Sally and Harry implement two different compareTo methods for a classthey are working on together. Sally’s compareTo method returns −1, 0, or +1,depending on the relationship between two objects. Harry’s compareTo methodreturns −6, 0, or +3. Which method is suitable?

Chapter 13 Solutions

Introduction to Java Programming and Data Structures, Comprehensive Version, Student Value Edition (11th Edition)

Ch. 13.4 - How do you create a Calendar object for the...Ch. 13.4 - For a Calendar object c, how do you get its year,...Ch. 13.5 - Prob. 13.5.1CPCh. 13.5 - Prob. 13.5.2CPCh. 13.5 - Prob. 13.5.3CPCh. 13.5 - Prob. 13.5.4CPCh. 13.6 - Prob. 13.6.1CPCh. 13.6 - Prob. 13.6.2CPCh. 13.6 - Can the following code be compiled? Why? Integer...Ch. 13.6 - Prob. 13.6.4CPCh. 13.6 - What is wrong in the following code? public class...Ch. 13.6 - Prob. 13.6.6CPCh. 13.6 - Listing 13.5 has an error. If you add list.add...Ch. 13.7 - Can a class invoke the super.clone() when...Ch. 13.7 - Prob. 13.7.2CPCh. 13.7 - Show the output of the following code:...Ch. 13.7 - Prob. 13.7.4CPCh. 13.7 - What is wrong in the following code? public class...Ch. 13.7 - Show the output of the following code: public...Ch. 13.8 - Prob. 13.8.1CPCh. 13.8 - Prob. 13.8.2CPCh. 13.8 - Prob. 13.8.3CPCh. 13.9 - Show the output of the following code: Rational r1...Ch. 13.9 - Prob. 13.9.2CPCh. 13.9 - Prob. 13.9.3CPCh. 13.9 - Simplify the code in lines 8285 in Listing 13.13...Ch. 13.9 - Prob. 13.9.5CPCh. 13.9 - The preceding question shows a bug in the toString...Ch. 13.10 - Describe class-design guidelines.Ch. 13 - (Triangle class) Design a new Triangle class that...Ch. 13 - (Shuffle ArrayList) Write the following method...Ch. 13 - (Sort ArrayList) Write the following method that...Ch. 13 - (Display calendars) Rewrite the PrintCalendar...Ch. 13 - (Enable GeometricObject comparable) Modify the...Ch. 13 - Prob. 13.6PECh. 13 - (The Colorable interface) Design an interface...Ch. 13 - (Revise the MyStack class) Rewrite the MyStack...Ch. 13 - Prob. 13.9PECh. 13 - Prob. 13.10PECh. 13 - (The Octagon class) Write a class named Octagon...Ch. 13 - Prob. 13.12PECh. 13 - Prob. 13.13PECh. 13 - (Demonstrate the benefits of encapsulation)...Ch. 13 - Prob. 13.15PECh. 13 - (Math: The Complex class) A complex number is a...Ch. 13 - (Use the Rational class) Write a program that...Ch. 13 - (Convert decimals to fractious) Write a program...Ch. 13 - (Algebra: solve quadratic equations) Rewrite...Ch. 13 - (Algebra: vertex form equations) The equation of a...
Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
  • Text book image
    Microsoft Visual C#
    Computer Science
    ISBN:9781337102100
    Author:Joyce, Farrell.
    Publisher:Cengage Learning,
Text book image
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,