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- Java4090: the comparator interface
This module discusses and illustrates the use of the Comparator interface. The sorting order established by a Comparator may be different or may be the same as the natural order. A Comparator can be used to establish a sorting order for objects that don't have a natural ordering. The use of a Comparator is an alternative to the implementation of the Comparable interface.
Revised: Wed Apr 06 23:01:46 CDT 2016
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Table of contents
Preface
This module is one of a series of modules designed to teach you about
Object-Oriented Programming (OOP) in general and the Java Collectionsframework in particular.
This module discusses and illustrates the use of the
Comparator interface. The sorting order established by a
Comparator may be different or may be the same as the natural order. A
Comparator can be used to establish a sorting order for objects that don't have a natural ordering. The use of a
Comparator is an alternative to the implementation of the
Comparable interface.
This module is also the first of several modules on the
Comparator interface. The purpose of the modules in this group is to teach you about theinteractions between the
Comparator interface and the Collections
Framework
, particularly with respect to the
Set ,
SortedSet ,
and
SortedMap interfaces of the Collections Framework. This module
discusses
Set and
SortedSet . A discussion of
SortedMap will be
deferred to a future module.
In addition to studying these modules, I strongly recommend that you study
the
Collections Trail in
Oracle's Java
Tutorials . The modules in this collection are intended to supplement and not
to replace those tutorials.
Viewing tip
I recommend that you open another copy of this module in a separate
browser window and use the following links to easily find and view the listings while you are reading about them.
Listings
-
Listing 1 . The program named Comparator02.
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Listing 2 . Passing Comparator to TreeSet constructor.
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Listing 3 . The fillIt method.
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Listing 4 . The class named MyClass.
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Listing 5 . Beginning of the class named TheComparator.
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Listing 6 . Beginning of the compare method.
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Listing 7 . Implementation of required behavior.
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Listing 8 . The overridden equals method.
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Listing 9 . Display the contents of the TreeSet object.
Questions & Answers
it is the relatively stable flow of income
what is circular flow of income
branches of macroeconomics
what is Flexible exchang rate?
is gdp a reliable measurement of wealth
introduction to econometrics
Why is unemployment rate never zero at full employment?
bcoz of existence of frictional unemployment in our economy.
Umashankar
what is flexible exchang rate?
poudel
due to existence of the pple with disabilities
Abdulraufu
the demand of a good rises, causing the demand for another good to fall
is it possible to leave every good at the same level
Joseph
I don't think so. because check it, if the demand for chicken increases, people will no longer consume fish like they used to causing a fall in the demand for fish
Anuolu
is not really possible to let the value of a goods to be same at the same time.....
Salome
Suppose the inflation rate is 6%, does it mean that all the goods you purchase will cost
6% more than previous year? Provide with reasoning.
Not necessarily. To measure the inflation rate economists normally use an averaged price index of a basket of certain goods. So if you purchase goods included in the basket, you will notice that you pay 6% more, otherwise not necessarily.
Waeth
discus major problems of macroeconomics
what is the problem of macroeconomics
Yoal
Economic growth
Stable prices
and low unemployment
Ephraim
explain inflationcause and itis degre
increase in general price levels
WEETO
Good day
How do I calculate this question: C= 100+5yd G= 2000 T= 2000 I(planned)=200.
Suppose the actual output is 3000. What is the level of planned expenditures at this level of output?
how to calculate actual output?
Chisomo
how to calculate the equilibrium income
Beshir
Criteria for determining money supply
who we can define macroeconomics in one line
Muhammad
Aggregate demand
Mohammed
C=k100 +9y and i=k50.calculate the equilibrium level of output
nawalparasi district
from belatari
Amisha
I am Camara from Guinea west Africa... happy to meet you guys here
Sekou
ahile becheclor ho
Amisha
hjr ktm bta ho
ani k kaam grnu hunxa tw
Amisha
money as unit of account means what?
Kalombe
A unit of account is something that can be used to value goods and services and make calculations
Jim
all of you please speak in English I can't understand you're language
Muhammad
I want to know how can we define macroeconomics in one line
Muhammad
it must be .9 or 0.9
no Mpc is greater than 1
Y=100+.9Y+50
Y-.9Y=150
0.1Y/0.1=150/0.1
Y=1500
Kalombe
Mercy is it clear?😋
Kalombe
hi can someone help me on this question
If a negative shocks shifts the IS curve to the left, what type of policy do you suggest so as to stabilize the level of output?
discuss your answer using appropriate graph.
if interest rate is increased this will will reduce the level of income shifting the curve to the left ◀️
Kalombe
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Source:
OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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