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Java inheritence and arraylist to sort [closed]

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Hey i have a project in which by using inheritence and arraylist i have to take input from file and then show the output after sorting them year wise but in my code my array list's are empty and i am not able to figure out how to solve it.
import java.io.FileNotFoundException;
public class Main {
public static void main(String[] args) throws FileNotFoundException {
// TODO Auto-generated method stub
Driver driver = new Driver();
driver.start();
}
}
import java.util.ArrayList;
import java.util.Scanner;
import javax.swing.JOptionPane;
import java.io.*;
public class Driver {
public void start() throws FileNotFoundException{
// Initialize arraylists
ArrayList<Movie> adventure = new ArrayList<>();
ArrayList<Movie> drama = new ArrayList<>();
ArrayList<Movie> fantasy = new ArrayList<>();
ArrayList<Movie> romance = new ArrayList<>();
ArrayList<Movie> sciFi = new ArrayList<>();
ArrayList<Movie> thriller = new ArrayList<>();
ArrayList<Movie> war = new ArrayList<>();
File myObj = new File("MovieListing.txt");
Scanner myReader = new Scanner(myObj);
String directorName = myReader.nextLine();
String composerName = myReader.nextLine();
while(myReader.hasNextLine()) {
String movie = myReader.nextLine();
String[] movieInfo = movie.split(",");
String title = movieInfo[0];
int year = Integer.parseInt(movieInfo[1]);
String genre = movieInfo[2];
String rating = movieInfo[3];
Movie movie1 = new Movie(title,year,genre,rating,directorName,composerName);
//sort movies into arraylists
if (genre.equals("Adventure"))
{
adventure.add(movie1);
}
else if (genre.equals("Drama"))
{
drama.add(movie1);
}
else if (genre.equals("Fantasy"))
{
fantasy.add(movie1);
}
else if (genre.equals("Romance"))
{
romance.add(movie1);
}
else if (genre.equals("Sci Fi"))
{
sciFi.add(movie1);
}
else if (genre.equals("Thriller"))
{
thriller.add(movie1);
}
else if (genre.equals("War"))
{
war.add(movie1);
}
}
myReader.close();
System.out.print(adventure);
for(Movie movie:war) {
System.out.print(movie.getTitle());
}
// Ask the user which genre they would like to view
String genre = JOptionPane.showInputDialog("Director: " +directorName + "\n" +
"Composer: " + composerName + "\n" +
"Which genre would you like? \n" +
"1. Adventure \n" +
"2. Drama \n" +
"3. Fantasy \n" +
"4. Romance \n" +
"5. SciFi \n" +
"6. Thriller \n" +
"7. War \n" +
"Your choice: ");
// Sort the movies by year released
adventure.sort(new MovieComparator());
drama.sort(new MovieComparator());
fantasy.sort(new MovieComparator());
romance.sort(new MovieComparator());
sciFi.sort(new MovieComparator());
thriller.sort(new MovieComparator());
war.sort(new MovieComparator());
// Display the output dialog box
String output = "Director: " +directorName + "\n" +
"Composer: " +composerName + "\n" +
"Genre: " + genre + "\n" +
"Movie Title\tYear Released\tRating\n";
if (genre.equals("1")) {
for (Movie movie : adventure) {
output += movie.getTitle() + "\t\t" + movie.getYearReleased() + "\t\t" + movie.getRating() + "\n";
}
}
else if (genre.equals("2")) {
for (Movie movie : drama) {
output += movie.getTitle() + "\t\t" + movie.getYearReleased() + "\t\t" + movie.getRating() + "\n";
}
}
else if (genre.equals("3")) {
for (Movie movie : fantasy) {
output += movie.getTitle() + "\t\t" + movie.getYearReleased() + "\t\t" + movie.getRating() + "\n";
}
}
else if (genre.equals("4")) {
for (Movie movie : romance) {
output += movie.getTitle() + "\t\t" + movie.getYearReleased() + "\t\t" + movie.getRating() + "\n";
}
}
else if (genre.equals("5")) {
for (Movie movie : sciFi) {
output += movie.getTitle() + "\t\t" + movie.getYearReleased() + "\t\t" + movie.getRating() + "\n";
}
}
else if (genre.equals("6")) {
for (Movie movie : thriller) {
output += movie.getTitle() + "\t\t" + movie.getYearReleased() + "\t\t" + movie.getRating() + "\n";
}
}
else if (genre.equals("7")) {
for (Movie movie : war) {
output += movie.getTitle() + "\t\t" + movie.getYearReleased() + "\t\t" + movie.getRating() + "\n";
}
}
JOptionPane.showMessageDialog(null, output);
}
}
public class Movie extends Director {
private String title;
private int yearReleased;
private String genre;
private String rating;
public Movie(String title, int yearReleased, String genre, String rating, String directorName, String composerName) {
super(directorName, composerName);
this.title = title;
this.yearReleased = yearReleased;
this.genre = genre;
this.rating = rating;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public int getYearReleased() {
return yearReleased;
}
public void setYearReleased(int yearReleased) {
this.yearReleased = yearReleased;
}
public String getGenre() {
return genre;
}
public void setGenre(String genre) {
this.genre = genre;
}
public String getRating() {
return rating;
}
public void setRating(String rating) {
this.rating = rating;
}
}
public class Director {
private String directorName;
private String composerName;
public Director(String d, String c) {
this.directorName = d;
this.composerName = c;
}
public String getDirectorName() {
return directorName;
}
public void setDirectorName(String directorName) {
this.directorName = directorName;
}
public String getComposerName() {
return composerName;
}
public void setComposerName(String composerName) {
this.composerName = composerName;
}
}
This is the link for the file that needs to be useed in the code https://drive.google.com/file/d/1FkDSAlEv3waby-ML1dKPf3Ouk3S7O99O/view?usp=sharing
Ecpected output format:-
Director: Steven Spielberg
Composer: John Williams
Genre: Drama
Movie Title Year Released Rating
Amistad 1997 R
The Post 2017 PG-13
....

Running your code without any changes throwed an exception:
java.lang.NumberFormatException: For input string: " 1994"
The exception was reported to be caused by this statement in class Driver:
int year = Integer.parseInt(movieInfo[1]);
The reason is quite obvious: There is a leading space infront of 1994, that's why it is throwing that exception. The reason why there is a space infront of 1994 lies within the input file:
Schindler's List, 1994, War, R
The same applies for the "genre" column in the input file and that's the reason why none of the imported movies is associated to the pre-defined genres during import:
if (genre.equals("War")) {
" War" (from import) is different from "War".
You need to remove leading (and trailing) spaces during import. You could do this calling java.lang.String#trim() on item of array movieInfo or by using an appropriate regular expression whith java.lang.String#split(String):
String[] movieInfo = movie.split(",\\s*");
This will split the input line at every occurence of "comma, followed optionally by spaces", effectively removing leading spaces from the imported fields.

Java: Accessibility problems with two methods in ArrayList (three classes)

I have three classes: Main,ReusaxCorp and Employee. Let's get straight to the point: In the ReusaxCorp class I want to implement two methods: retrieveEmployee, which iterates through the Array List and prints out all employees information. So I tried this:
public void retrieveEmployee() {
for (int i = 0; i < employees.size(); i++) {
System.out.println("ID: " + employee.ID + END_OF_LINE + "Name: " + employee.name + END_OF_LINE + "salary: " + employee.grossSalary);
}
}
But that does not work, because I can't access - for instance - employee.ID or employee.name. In the second method. updateEmployee I would have liked to change the information, but that doesn't work either because of the accessibility. I appreciate any kind of help. Here are my three classes:
public class Employee {
protected String ID;
protected String name;
protected double grossSalary;
final String END_OF_LINE = System.lineSeparator();
public Employee (String ID, String name, double grossSalary){
this.ID = ID;
this.name = name;
this.grossSalary = grossSalary;
}
public double getGrossSalary() {
return grossSalary;
}
public void setGrossSalary(double grosssalary) {
this.grossSalary = grossSalary;
}
public String getName(){
return name;
}
public void setName(String name) {
this.name = name;
}
}
Here's my Main class:
public class Main {
private static String END_LINE;
private Scanner sc;
public String name;
public String ID;
public double salary;
private int GPA;
private ReusaxCorp reusaxcorp;
public Main(){
sc = new Scanner(System.in);
END_LINE = System.lineSeparator();
}
public void presentoptions(){
while (true){
System.out.println("=== Welcome === ");
System.out.println("Choose an option below: ");
System.out.println(" ");
System.out.println("1. Register an employee. ");
System.out.println("2. Remove an employee. ");
System.out.println("3. Retrieve an employees information. ");
int option = sc.nextInt();
switch (option) {
case 1:
System.out.println("What type of employee? " + END_LINE
+ " - Intern. " + END_LINE
+ " - Employee. " + END_LINE
+ " - Manager. " + END_LINE
+ " - Director." + END_LINE);
String type = sc.nextLine();
createEmployee();
break;
case 2:
break;
case 3:
reusaxcorp.retrieveEmployee();
break;
default:
System.out.println("Error. Please try again.");
break;
}
}
}
public void createEmployee(){
String typeofemployee = sc.nextLine();
System.out.println("What's the ID of the new " + typeofemployee + "?");
ID = sc.nextLine();
System.out.println("What's the name of the new " + typeofemployee + "?");
name = sc.nextLine();
System.out.println("What's the salary of the new " + typeofemployee + "?");
salary = sc.nextDouble();
Employee employee = new Employee(ID, name, salary);
switch (typeofemployee) {
case "Intern":
System.out.println("What's the new Interns GPA? ");
GPA = sc.nextInt();
case "Employee":
break;
case "Manager":
break;
case "Director":
break;
default:
System.out.println("Error");
break;
}
}
public static void main(String[] args) {
Main runcode = new Main();
runcode.presentoptions();
}
}
And here at last the ReusaxCorp class.
public class ReusaxCorp extends Main {
ArrayList<Employee> employees = new ArrayList<Employee>();
final String END_OF_LINE = System.lineSeparator();
public void registerEmployee(){
employees.add(new Employee(ID, name, salary));
}
public void retrieveEmployee() {
for (int i = 0; i < employees.size(); i++) {
System.out.println("ID: " + employee.ID + END_OF_LINE + "Name: " + employee.name + END_OF_LINE + "salary: " + employee.grossSalary);
}
}
public void updateEmployee(){
}
}

You are trying to access the variable employee which does not exist anywhere int the class.
public void retrieveEmployee() {
for (int i = 0; i < employees.size(); i++) {
//add this line
Employee employee = employees.get(i);
System.out.println("ID: " + employee.ID + END_OF_LINE + "Name: " + employee.name + END_OF_LINE + "salary: " + employee.salary);
}
}
You can also use a for-each loop:
for(Employee employee: employees){
System.out.println("ID: " + employee.ID + END_OF_LINE + "Name: " + employee.name + END_OF_LINE + "salary: " + employee.salary);
}
Also note that accessing the fields such as ID using employee.ID is only applicable if the classes are in the same package (being protected). Otherwise you need to create a getter and access them using getter such as employee.getID()

Use employee.getId() instead of employee.ID while iterating through the list of employees, you already have those public getter methods implemented while the class members are protected. Do so for the other class members (name and so on) as well…
You can do that in your solution by getting the employee from the list by index like
System.out.println(employees.get(i).getId());
or you just take a "for each" loop like
for (Employee employee : employees) {
System.out.println(employee.getId());
}

How to Pair Up Random Indices of an ArrayList with each other

I am currently working on a project where I read in a CSV file that contains a list of Pokemon, as well as their traits. I am trying to run a battle simulator that randomly pairs up these Pokemon with each other and compares their combatScore, which is a result of a simple calculation using their traits such as speed, attack, defense, etc. I read in all of the Pokemon from the CSV file into an ArrayList of type Pokemon. Now, I want to randomly pair them up with each other and compare their combatScore; whoever has the higher score moves on to the next round, and the loser is placed into another ArrayList of defeated Pokemon. However, I do not know how to randomly pair up the Pokemon. Here is my code of the main class so far:
import java.io.*;
import java.util.ArrayList;
import java.util.Random;
public class assign1 {
public static void main(String[] args) throws IOException {
String csvFile = args[0]; //path to CSV file
String writeFile = args[1]; //name of output file that contains list of Pokemon and their traits
BufferedReader br = null;
String line = "";
String cvsSplitBy = ",";
ArrayList<Pokemon> population = new ArrayList<Pokemon>();
FileWriter fileWriter = new FileWriter(writeFile);
BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
try {
br = new BufferedReader(new FileReader(csvFile));
String headerLine = br.readLine(); // used to read first line of CSV file that contains headers
while ((line = br.readLine()) != null) {
Pokemon creature = new Pokemon();
// use comma as separator
String[] pokemon = line.split(cvsSplitBy);
creature.setId(pokemon[0]);
creature.setName(pokemon[1]);
creature.setType1(pokemon[2]);
creature.setType2(pokemon[3]);
creature.setTotal(pokemon[4]);
creature.setHp(Integer.parseInt(pokemon[5]));
creature.setAttack(Integer.parseInt(pokemon[6]));
creature.setDefense(Integer.parseInt(pokemon[7]));
creature.setSpAtk(Integer.parseInt(pokemon[8]));
creature.setSpDef(Integer.parseInt(pokemon[9]));
creature.setSpeed(Integer.parseInt(pokemon[10]));
creature.setGeneration(Integer.parseInt(pokemon[11]));
creature.setLegendary(Boolean.parseBoolean(pokemon[12]));
creature.getCombatScore();
// Adds individual Pokemon to the population ArrayList
population.add(creature);
// Writes to pokemon.txt the list of creatures
bufferedWriter.write(creature.getId() + ". "
+ "Name: " + creature.getName() + ": "
+ "Type 1: " + creature.getType1() + ", "
+ "Type 2: " + creature.getType2() + ", "
+ "Total: " + creature.getTotal() + ", "
+ "HP: " + creature.getHp() + ", "
+ "Attack: " + creature.getAttack() + ", "
+ "Defense: " + creature.getDefense() + ", "
+ "Special Attack: " + creature.getSpAtk() + ", "
+ "Special Defense: " + creature.getSpDef() + ", "
+ "Speed: " + creature.getSpeed() + ", "
+ "Generation: " + creature.getGeneration() + ", "
+ "Legendary? " + creature.isLegendary() + ", "
+ "Score: " + creature.getCombatScore());
bufferedWriter.newLine();
}
}
catch (FileNotFoundException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
finally {
if (br != null) {
try {
br.close();
}
catch (IOException e) {
e.printStackTrace();
}
}
}
bufferedWriter.close();
}
}
And here is the code for my Pokemon class:
public class Pokemon {
String id;
String name;
String type1;
String type2;
String total;
int hp;
int attack;
int defense;
int spAtk;
int spDef;
int speed;
int generation;
boolean legendary;
public Pokemon() {}
public String getId () {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getType1() {
return type1;
}
public void setType1(String type1) {
this.type1 = type1;
}
public String getType2() {
return type2;
}
public void setType2(String type2) {
this.type2 = type2;
}
public String getTotal() {
return total;
}
public void setTotal(String total) {
this.total = total;
}
public int getHp() {
return hp;
}
public void setHp(int hp) {
this.hp = hp;
}
public int getAttack() {
return attack;
}
public void setAttack(int attack) {
this.attack = attack;
}
public int getDefense() {
return defense;
}
public void setDefense(int defense) {
this.defense = defense;
}
public int getSpAtk() {
return spAtk;
}
public void setSpAtk(int spAtk) {
this.spAtk = spAtk;
}
public int getSpDef() {
return spDef;
}
public void setSpDef(int spDef) {
this.spDef = spDef;
}
public int getSpeed() {
return speed;
}
public void setSpeed(int speed) {
this.speed = speed;
}
public int getGeneration() {
return generation;
}
public void setGeneration(int generation) {
this.generation = generation;
}
public boolean isLegendary() {
return legendary;
}
public void setLegendary(boolean legendary) {
this.legendary = legendary;
}
public int getCombatScore() {
return (speed/2) * (attack + (spAtk/2)) + (defense + (spDef/2));
}
#Override
public String toString() {
return "Name: " + this.getName()
+ ", Type 1: " + this.getType1()
+ ", Type 2: " + this.getType2()
+ ", Total: " + this.getTotal()
+ ", HP: " + this.getHp()
+ ", Attack: " + this.getAttack()
+ ", Defense: " + this.getDefense()
+ ", Sp. Attack: " + this.getSpAtk()
+ ", Sp. Defense: " + this.getSpDef()
+ ", Generation: " + this.getGeneration()
+ ", Legnedary: " + this.isLegendary()
+ ", Score: " + this.getCombatScore();
}
}
I only want to compare their combatScore values to each other. Any help/suggestions would be much appreciated.

What come to my mind is this. You pick one random item (pokemon) from array list. Remove it from array list. Then you pick one random item again and remove it. Now you have a pair of items. Repeat above step for remaining items in array list until no more items available.
Or you can shuffle whole array list first and then pick item i and item i+1 as pair for i=0,2,4,6,...
Collections.shuffle(pokemonsArrayList);
for (int i=0; i< pokemonsArrayList.size(); i+=2) {
pokemon1 = pokemonsArrayList.get(i);
pokemon2 = pokemonsArrayList.get(i+1);
}
Just make sure that number of elements in ArrayList is even. Otherwise code above will throw exception index out of bound

Since every element in an ArrayList has an index, you can just get a random element from it by calling
Pokemon pokemon1;
Pokemon pokemon2;
pokemon1 = arrayList.get(Math.random()*arrayList.size());
do {
pokemon2 = arrayList.get(Math.random()*arrayList.size());
} while(pokemon1.getId() == pokemon2.getId());
then compare the Pokémon you got out of List1 with the one you got from List2.
You can then of course remove the Pokémon from the List if you wish.
Hope that helps you out!

How can I print out in columns in java

This is where I am printing out and I need it to print in columns.aLeaderboard is an array list with a custom class.it contains several different ints
System.out.println("Position Team Games Played Home Wins Home Draws Home Losses Home Goals For Home Goals Against Away Wins Away Draws Away Losses Away Goals For Away Goals Against Goal Difference Total Points");
for(int counter = 0;counter<teamName.size();counter++)
{
System.out.print((counter + 1) + " " + teamName.get(counter) + " " + (aLeaderboard.get(counter)).getGamesPlayed() + " " + (aLeaderboard.get(counter)).getHomeWins() + " " + (aLeaderboard.get(counter)).getHomeDraws() + " ");
System.out.print((aLeaderboard.get(counter)).getHomeLosses() + " " + (aLeaderboard.get(counter)).getAwayWins() + " " + (aLeaderboard.get(counter)).getAwayWins() + " " + (aLeaderboard.get(counter)).getAwayDraws() + " ");
System.out.print((aLeaderboard.get(counter)).getHomeGoalsFor() + " " + (aLeaderboard.get(counter)).getHomeGoalsAgainst() + " " + (aLeaderboard.get(counter)).getAwayLosses() + " " + (aLeaderboard.get(counter)).getGamesPlayed() + " ");
System.out.print((aLeaderboard.get(counter)).getAwayGoalsFor() + " " + (aLeaderboard.get(counter)).getAwayGoalsAgainst() + " " + (aLeaderboard.get(counter)).getGoalsDifference() + " " + (aLeaderboard.get(counter)).getTotalPoints());
System.out.println();
}

I would use System.out.printf(...) and use a template String to help be sure that all columns line up. Then you could print things out easily in a for loop.
For example:
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.List;
public class Foo4 {
public static void main(String[] args) {
List<Bar4> bar4List = new ArrayList<>();
bar4List.add(new Bar4("Donald", 3, "A", 22.42));
bar4List.add(new Bar4("Duck", 100, "B", Math.PI));
bar4List.add(new Bar4("Herman", 20, "C", Math.sqrt(20)));
String titleTemplate = "%-10s %6s %6s %9s%n";
String template = "%-10s %6d %6s %9s%n";
System.out.printf(titleTemplate, "Name", "Value", "Grade", "Cost");
for (Bar4 bar4 : bar4List) {
System.out.printf(template, bar4.getName(),
bar4.getValue(), bar4.getGrade(), bar4.getCostString());
}
}
}
class Bar4 {
private String name;
private int value;
private String grade;
private double cost;
private NumberFormat currencyFormat = NumberFormat.getCurrencyInstance();
public Bar4(String name, int value, String grade, double cost) {
this.name = name;
this.value = value;
this.grade = grade;
this.cost = cost;
}
public String getName() {
return name;
}
public int getValue() {
return value;
}
public String getGrade() {
return grade;
}
public double getCost() {
return cost;
}
public String getCostString() {
return currencyFormat.format(cost);
}
}
Which would return:
Name Value Grade Cost
Donald 3 A $22.42
Duck 100 B $3.14
Herman 20 C $4.47
For more details on the user of the String format specifiers (i.e., the %6d and %6s above), please look at the Formatter API.

Object Array won't print correctly [duplicate]

This question already has answers here:
How do I print my Java object without getting "SomeType#2f92e0f4"?
(13 answers)
Closed 7 years ago.
I'm brand new to programming and Java, I'm doing a school project with very strict guidelines. I'm sure there's a more efficient way to do my code, but that's not my issue. When I try to print my array at the bottom of main, I get
"Country#10b28f30, Country#3ad6a0e0, Country#60dbf04d",.... and so on.
I know the array is loading, because when
// System.out.println ("object is: " + name + " " + capital + " " + region + " " + region_Nbr + " " + capital_population);
runs, it prints all elements of the array as it's being built. I've keep reading something
about having to override toString, I've tride multiple ways to print the array, none work. Thanks in advance.
public class Main {
/**
* #param args the command line arguments
*/
private int size = 43;
private static Country[] countryInfo = new Country[43];
private Control control;
public static void main(String[] args) throws IOException {
String name = "";
String capital = "";
String region = "";
int region_Nbr = 0;
int capital_population = 0;
// TODO code application logic here
String filename = "Countries.txt";
String inputString;
FileInputStream fis1 = new FileInputStream(filename);
BufferedReader br1 = new BufferedReader(new InputStreamReader(fis1));
inputString = br1.readLine();
int count = 0;
while (inputString != null) {
//System.out.print(inputString + "\n");
name = inputString.substring(0, 13).trim();
//System.out.print(name + ", "); //echo
capital = inputString.substring(24, 36).trim();
//System.out.print(capital + ", ");//echo
region = inputString.substring(40, 56).trim();
//System.out.print(region + ", "); //echo
region_Nbr = Integer.parseInt(inputString.substring(64, 66).trim());
//System.out.print(region_Nbr + ", ");//echo
capital_population = Integer.parseInt(inputString.substring(72, inputString.length()).trim());
//System.out.print(capital_population + "\n");
countryInfo[count] = new Country(name, capital, region, region_Nbr, capital_population);
//Control.printArray(countryInfo);
inputString = br1.readLine();
count++;
} //end while
br1.close();
System.out.println(Arrays.toString(countryInfo));
}
}// end class Main
import java.util.Arrays;
public class Country
{
private String name;
private String capital;
private String region;
private int region_Nbr;
private int capital_population;
private Control control;
public Country (String strName, String strCapital,String strRegion, int iregion_Nbr, int icapitalpop)
{
name = strName;
capital = strCapital;
region = strRegion;
region_Nbr = iregion_Nbr;
capital_population = icapitalpop;
// System.out.println ("object is: " + name + " " + capital + " " + region + " " + region_Nbr + " " + capital_population);
}// end constructor
}//end class
}//end class

Since you want to print the elements of a Custom Class i.e Country in you case , you will need to override the toString implementation in the Country class.
If you do not override the toString for a custom class, it will print you the reference .
#Override
public String toString() {
return "Country: name = " + this.name + "; capital = " + this.capital + "; region = " + this.region ;
}
Why don't you use this
List<Country> countryInfoList = new ArrayList<Country>();
.....
and then just add the country to the countryInfoList i.e countryInfoList.add(country);
p.s: in both cases, you will have to override the toString implementation.

Every class has a toString method by default. You can override this method to return a more meaningful String value.
import java.util.Arrays;
public class Country
{
private String name;
private String capital;
private String region;
private int region_Nbr;
private int capital_population;
private Control control;
public Country (String strName, String strCapital,String strRegion, int iregion_Nbr, int icapitalpop)
{
name = strName;
capital = strCapital;
region = strRegion;
region_Nbr = iregion_Nbr;
capital_population = icapitalpop;
// System.out.println ("object is: " + name + " " + capital + " " + region + " " + region_Nbr + " " + capital_population);
}// end constructor
public String toString() {
return "Country: name = " + name + "; capital = " + capital + "; region = " + region + "; regionNbr = " + region_Nbr + "; population = " + capital_population;
}
}//end class
Obviously you can format the rely any way you want
Updated with working example...
import java.io.IOException;
import java.util.Arrays;
import java.util.ResourceBundle.Control;
public class Main {
private static Country[] countryInfo = new Country[1];
public static void main(String[] args) throws IOException {
new Main();
}
public Main() {
String name = "";
String capital = "";
String region = "";
int region_Nbr = 0;
int capital_population = 0;
countryInfo[0] = new Country("Australia", "Canberra", "AU", 61, 6000000);
System.out.println(Arrays.toString(countryInfo));
}
public class Country {
private String name;
private String capital;
private String region;
private int region_Nbr;
private int capital_population;
private Control control;
public Country(String strName, String strCapital, String strRegion, int iregion_Nbr, int icapitalpop) {
name = strName;
capital = strCapital;
region = strRegion;
region_Nbr = iregion_Nbr;
capital_population = icapitalpop;
}// end constructor
#Override
public String toString() {
return "Country: name = " + name + "; capital = " + capital + "; region = " + region + "; regionNbr = " + region_Nbr + "; population = " + capital_population;
}
}//end class
}//end class
Outputs...
[Country: name = Australia; capital = Canberra; region = AU; regionNbr = 61; population = 6000000]